Menu English Ukrainian russian Home

Free technical library for hobbyists and professionals Free technical library


Detailed contents of all issues of the journal Ham radio 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, XNUMX

Magazine Radioamateur

Below, in alphabetical order, are the titles of articles published in the journal. Ham radio from 1991 to 2019. To find out which issue of the magazine Ham radio published this or that article, use article archive search.

Color and Code. Automation of LED Resistor Calculation Processes

Color and Code. A new direction for ARDUINO

144 MHz CW transmitter

Direction and current LED indicator

LMP - reference UMZCH on LM3886 (overture)

Lua for Embedded Systems. Part 10 or... #ESP.Meteo with automatic software updates over the air (Wi-Fi)

SDR receivers, ethics and more

UW3DI-1: lamp filament with direct current

visual analyzer. Practical parameter measurement

And the range is truly magical!

Aircraft model tachometer

Automatic battery charger

Ammeter

Analogues of mechanical switches on CMOS elements

Antenna UA6AGW v.20.62

Hardware password manager

Ham Radio Arsenal

Incubator automatic control unit. A new version

In the development of the theme of pulsed galvanization. About an uninterruptible power supply or Increasing the noise immunity of equipment for electrochemical processes

In the development of the topic about an improved control system for galvanic equipment. Advanced generator for electroplating on an alternative element base

In the development of the topic about an improved control system for galvanic equipment. Input and display devices

Excited... Why?

The second life of the AMT-69 payphone

Upstarts - fight!

RF adapter

High Frequency RMS Millivoltmeter

flashing light generator

Frequency Doubler Generator

Variable frequency three-phase voltage generator

Pulse generators with autonomous frequency and duty cycle control

OS generators

GIR and wavemeter on PT

diadynamic electrotherapy

Refinement of the reverb from the Master Kit

microdrill driver

Capacitive three-point on the op amp and CMOS frequency elements

If the board is double sided...

Battery charger

Charger for mobile phones powered by a car battery

Charger to keep the car battery charged during storage

Protection from the fool

Radiation protection

Defending...

Products Beginner

Measurement of active resistance of high-resistance media on alternating current

Arduino inductance and capacitance meter

QRPP transmitter output indicator

hidden wiring finder

Hidden wiring finder Iris

How will UMZCH sound? The minimum required set of measured parameters of the audio frequency amplifier

How not to compete...

Porridge from an ax: about the modernization and adaptation of the hydraulic press

Quadropod (four-legged) spider robot GOSH. Part 1. Chassis Assembly

Quadropod (four-legged) spider robot GOSH. Part 2. Assembly of the control board

Quadropod (four-legged) spider robot GOSH. Part 3. Flashing the control board and reviving the robot

Combination locks on the CD4050 chip

Combination locks with push buttons

Speaker switcher with remote control

electrician control

Laboratory PSU on a unified transformer TN

144/14 MHz tube transceiver

Tube ULF from UN7BV

A magnetic field. Magnetic receiving antennas

Prototyping of electronic devices

Transformer Testing Method

Flashers on germanium transistors

Multi-channel thyristor switches with dependent latching

Bridge RC Phase Shifters

Bridge RC Phase Shifters

Powerful DC/AC converter

Non-standard use of 155 series microcircuits. 5 volt parallel regulator

Non-standard use of 155 series microcircuits. Surge Protectors

Low-frequency generator on germanium transistors

About the use of foil materials

About 50 MHz Band Filters

Experience exchange. Simple Schmitt trigger on TL431

RF limiter with adjustable clipping level

One-button control of two or more lights

Meter head evaluation

Batch KPI

14 MHz transmitter

DIY printed circuit board

Supplying voltage to incandescent lamps

Connecting an external antenna to a miniature FM radio

RF band pass filter

Duty cycle threshold

Safety rules for working with electrical circuits

Practical parameter measurement

Preamp on SSM2018T

Acoustic warning device for overflow or liquid leakage

Probe for installation continuity

Simple charger - automatic

Simple charger with car battery desulfation

Simple 99,9 V voltmeter with dimmer

Simple battery chargers

Simple homemade antennas for receiving broadcasts in the range of 64 ... 108 MHz

Simple electronic clock

Radio microphone on one transistor

Tunnel diode radio microphone

Radio microphone with high sensitivity

All-band radio transmitter Contest-Tx

Frame amateur VHF antenna of universal polarization of the range of 2 m on frame elements of the envelope type

Real selectivity of radio receiving paths in a difficult interference environment

Amplifier gain control with improved symmetry

Power regulator

Power regulator for heating appliances

Current regulator in load branches with current protection in case of breakage of any of the branches

T8 LED Lamp Repair

savings

Warning device for overheating of a tiled stove

PTZ control system with RS485 interface

LO receiver mixer

Coordination of the transceiver with the power amplification unit

We match the transceiver with the power amplifier

Creation of HDTV installation. Work on mistakes

Creation of HDTV installation. PLL system

SU on VHF in the form of a P-loop

Samuel Morse and his contribution to the development of telecommunications

Thermohygrometer on Arduino. Temperature and Humidity Meter

Thermometer with a measurement accuracy of 0,1 degrees (option 2)

Technology Tips

toroidal transformer

6m transverter to HF transceiver

Transceiver H-220

Transformer Power Supply for Transceiver

At the origins of the GSM cellular standard

Increasing transmitter power

Narrow band burglar alarm

Narrow band radio

UZCH on K174UN14 (TDA2003)

Battery Charger Improvements

ultrasonic microphone

Controlled digital frequency dividers on the CD4013 chip

Simplified versions of bridge phase shifters

Amplifier PBS with AGC and RRS

IF (HF) amplifier on K548UN1A and gain control methods

Device for galvanization and medicinal electrophoresis

Device for charging galvanic cells and batteries

Sprinkler pump control device

Low pass filter at 50 MHz

OBP shaper

Cycle Timer or Timer

Digital-to-analog duty cycle meter

Digital phase shifters 0, 120, 240 degrees

Four-channel switch, controlled by the signal duty cycle

PWM with autonomous frequency and pulse duty cycle control

Series Type PWM Load Current Controller

Broadband Bridge Signal Phase Shifters

Electric thermometer, constant voltage voltmeter, infrared indicator

Electronic balance

Electronic LATR

AMI - music box

100 W - guitar amplifier

1024x8 bit static CMOS EEPROM I2C bus

10-channel mixer with karaoke converter

10 channel infrared remote control

12V out of 24 with four parts

12 LED Automotive Voltmeter

12-tube receiver Festival

13-level signal indicator

14IVR-00A, 14IVR-00B, 14IVR-01A, 14IVR-01B

15 channel infrared remote control system

16-channel logic analyzer

16-bit codec 1806XM1-777

24-channel light music with USB control from a PC

256x8 bit static CMOS EEPROM with I2C bus (EKR1568RR1)

3 BAND SLOPER

300W subwoofer amplifier

300 watt power amplifier

32 bit encoder

MC3 3D printer

3-El Quad at 7,0 MHz - per day off

42nd European DX Council Conference

432 MHz EME

44nd European DX Council Conference

4-channel 280W DPPF T-class audio amplifier with minimal dynamic distortion

5 BANDS SLOPER

5 lamps on 2 wires

6-meter Band

6-channel security system

7-element log-periodic

8 channels in SVP-403+DU

8-bit controllers

8-bit microcontrollers

8-channel USB thermometer on PIC18F4550

8 channel infrared remote control system

8-bit microcontroller EKR1847VG6

AF0011 - 8-button capacitive touch sensor CAP1188 for I2C and SPI interfaces

AMSAT-U-ORBITA

AO-21/RS-14 has ended its life!

ARRL International DX Contest

AVR ParaPROG - parallel programmer for AVR microcontrollers

AVR in the device for protecting equipment from abnormal mains voltage 220 V

AVRDOM, or controller for managing electrical equipment at home

AVR-USB-MEGA16: fast development of USB applications in C# using ATMega16 wrapper class

BASIC Pic controller. We build a thermometer, a timer-thermostat and a home weather station

BEF-6101. Metal detector, hidden wiring finder

Bluetooth modules for lighting control

Bluetooth adapter Master Kit MP3862BT: new life for old audio equipment

Bluetooth headset in home automation system

BM2033 - 3D Smart Controller

BM2115 - Active low pass filter for subwoofer

BM8009 - GPS-GPRS car tracker

BM8009 - GPS-GPRS car tracker

BM8009GL - Satellite monitoring and control system GPS/GLONASS

BM8039G - Domestic gas leak detector

BM8039S - Smoke detectors and matching device

BM8079D - Uninterruptible power supply 12 V / 0,4 A

BPSK modem 1200

CCD&CMOS matrices and modules

ChessTimeBreak - time relay

ChipCorder - voice recording and playback device

CodeVision AVR, project №2 or Moving on (workshop on Atmel AVR microcontrollers)

color and code

color and code. SMD codes. New opportunities

color and code. Calculator

color and code. Definition of radio elements

color and code. Defining new types

color and code. Database editor - second submodule and database aggregation

color and code. Database editor - first submodule

color and code. Directory

Copyleft - a new project from Master Kit

CQ World-Wide WPX Contest

CQ from hot air balloon gondola

CW RTTY modem

CW-FONE-VOX

DAS IST KAPUT?

DC-DC converters

DEGEN is a Chinese friend of DXers

Disk-Monitor - a step towards SR/M

DK NANO - Expansion board for Arduino Nano and Arduino Pro

DRAM memory modules

DTMF To Pulse Gate

DX Stations

DX-technical aspects and organizational issues

EK-001 - FM radio receiver - radio kit - coloring WONDER KIT

EK-003 - Stereo VHF, FM Tuner

EK-004 - Radioconstructor Your radio №4

EK-004A - Radio constructor Your radio №4A. Controlled by Arduino

EL DELTA with active power supply 14 MHz

EPPURE SI MUOVI!

ES on 1994m in 1, from EUXNUMXAA

European DX Council

EVM laboratories: first person view

Extra Mouse

FB0031 - Autowatering system (automatic plant watering system)

FB0055 - Hobot-188 window cleaning robot

FCL-meter: revision

Flash-4. Strobe with microphone

FM tuner-semiautomatic

FM adapter for recording telephone conversations

FOND EDIT

GaAs transistors (package types)

Google Calendar API. Notification in the office and home automation systems

GPS Receiver

GPS receiver tracker

Graph - symbols for every taste

Green Day-2012 or How Volga residents participated in the Green Day of Activity

GsmHorn - car alarm for PIC16F84 and Siemens A35

GSM watchman - security device with notification to a mobile phone

Hardware Control: control program for multi-channel relay devices

Hi-Fi audio processor MP1241A (TEA6320). Extension for ARDUINO

HTC Hero - restoring the normal operation of the touch glass

IDF-2006

IF/AF modem of a highly dynamic transceiver with a crystal filter

IL235Z

INFOTEX AMATEUR RADIO CLUB

IPTV. Your online radio station

IPTV. video server

IPTV. Broadcast from tuner to network

ISL29020 - highly sensitive digital light sensor

IW3527A, IW3527K, IW3549A, IW3549K, IW3563A, IW3563K

JPEG camera. Introduction

JTAG. xllinx programmer

JUNGLE JOB, or new technical principles for the design of compact beams

Kenwood TS-440: useful information

Krom - single-ended tube amplifier with EL34 tube

LC72131, LC72131M - PLL AM/FM Frequency Synthesizer

LC Meter for Beginners

LED indicator of PTO supply voltage decrease

LED signal indicator for ULF

Mains frequency LED

LM109 / LM309

LM123/LM323/LM323A

LM140L/LM340L

LM341/LM78MXX

LM78LXX

LOG YAGI at 14 MHz

LptSW - load management program using LPT port

Lua for Embedded Systems. #ESP.Meteo predicts the likelihood of frosts

Lua for Embedded Systems. Remote sensor of the eternal Wi-Fi logger

Lua for Embedded Systems. Discrete I/O control and operation with SSD1306 display

Lua for Embedded Systems. Median Filtering for DHT Temperature and Humidity Sensors

Lua for Embedded Systems. #ESP.Meteo weather station on Twitter

Lua for Embedded Systems. Espressif modules and self-powered

Lua for Embedded Systems. Transparent UART/Wi-Fi bridge based on ESP8266

Lua for Embedded Systems. The work of the eternal Wi-Fi logger on a solar panel made of amorphous silicon

Lua for Embedded Systems. Part 9 or... #ESP.Meteo with altimeter function

MA0353A - 433 MHz wireless lighting control kit (three channels of 2 kW)

MA1238 and MA1248 - Electronic badges

MA3102 - IR presence sensor

MA3171B - 433MHz Wireless Lighting Control Kit (Single Channel up to 600W)

MA3272E - 433 MHz Wireless Lighting Control Kit (two channels of 600 W)

MA3303 - Android thermostat. In case

MA3383 - Wireless lighting control kit

MA3686B - 433 MHz Wireless Lighting Control Kit (six channels of 2 kW)

MA802 - PIR motion detector

MA896MVI - Headphones with subwoofer, built-in ULF and microphone. USB 2.1

MA896MVIA - Headphones with subwoofer, built-in 6-channel ULF and microphone. USB 5.1

MA896MVIB - Headphones with subwoofer, built-in 6-channel ULF and microphone. 4 x jack 3.5

MA896MVIBG - Headphones with subwoofer, built-in 6-channel ULF and microphone. 3 x jack 3.5 + 1 x jack 2.5

MA9802E27 - 433MHz Wireless Lighting Control Kit (two 600W cartridges)

MA9803E27 - 433MHz Wireless Lighting Kit (three cartridges up to 600W)

Manhattan Style and others

MAX1570, MAX1595

MAX1574, MAX1583, MAX1599

MAX1575, MAX1576, MAX1577Y(Z), MAX8595Z, MAX8596Z

MAX1910, MAX1912

MAX1916, TA3020, HT1611, HT1611

MB DUE - Freduino DUE, 3.3V, AT91SAM3X8E ARM Cortex-M3, 84 MHz

MB DUEML - Freaduino Duemilanove, 3.3V/5V, ATMEGA328, 16MHz

MB Leonardo - Freaduino Leonardo, 5V, ATmega32u4, 16MHz

MB NANO - Arduino NANO, 5V, ATMEGA328, 16MHz

MIDI keyboard on PIC16F628A

Mini V-beam

MK169 - Thermal relay

MK333 - 433 MHz radio controlled relay. One channel, 220 V / 7 A

MK336 - Additional key fob for remote control system

MK356 - Car rat and mouse repeller

MK802 III LE - Dual Core mini PC, RK3066, Linux, RAM 1G, flash 4G

MK809III - Quad Core mini PC, RK3188. Android 4.2, Bluetooth, RAM 2G, flash 8G

MODBUS on the leash. UART or ... microcontroller speed setting

MODBUS on the leash. Archive converter

MODBUS on the leash. Monitoring and control on PC

MODBUS on the leash. The workhorse of the ATmega

MODBUS on the leash. Remote industrial indicator

Mongoose on guard

MP1054 - ULF digital power indicator

MP1090 - FM radio. Extension for Arduino

MP1091 - Arduino Expansion Module: XNUMX-segment, XNUMX-digit LED indicator

MP1092 - Arduino Expansion Module: I/O Expansion Board (16-bit) and LED Dimmer

MP1093 - Shaft encoders with handles. Arduino extension module

MP1093 - Two encoders with handles. Arduino extension module

MP1094 - Extension module for Arduino. Infrared remote control with receiver

MP1094 - Extension module for Arduino. IFK remote control with receiver

MP1095 - Extension module for Arduino. Real time clock (RTC)

MP1115 - 15W Class D digital amplifier. China Syndrome Project (East Side)

MP112 - MP3 module

MP1202 - Stereo Bass Amplifier 2 x 15 W (TDA7297)

MP1205 - Digital Audio Spectrum Analyzer (10 - bands)

MP1215 - 2x15W Class D digital amplifier. China Syndrome Project (East Side)

MP1241A - Preamplifier - 4-channel tone block (TEA6320). Extension for ARDUINO

MP1242A - Pre-amplifier, 5-band graphic equalizer (TEA6360). Extension for ARDUINO

MP1290 - T-class digital amplifier (Tripath technology), 90W stereo. China Syndrome Project (East side)

MP146 - Power module with three modes of operation, for controlling electrical appliances up to 7 kW (30A)

MP18B20 - DS18B20 digital temperature sensor module, remote connection

MP1901 - Color CMOS Camera

MP220R - Power relay module for load control up to 4 kW

MP220V - Mains voltage control sensor

MP2211 - 2-channel actuator (relay box)

MP248 - Power controller with analogue control

MP2603DI - Built-in, miniature USB-MP3 / WMA player with remote control and LCD display

MP2896 - Embedded micro system: FM, USB, SD, remote control, clock / alarm. LED display

MP2898BT - Bluetooth media center

MP29035 - Color 3.5' TFT-LCD module 320x240 resolution with video controller

MP2904 - Color 4' TFT-LCD module 320x240 resolution with video controller

MP2906HD - 5,6 IPS color monitor, WXGA, 1280 x 800. HDMI, VGA, DVI, LVDS, DAC and stereo amplifier

MP2907HD - 7' IPS color monitor, WXGA, 1280 x 800 HDMI, VGA, DVI, LVDS inputs, DAC and stereo amplifier

MP2966 - Mini player: video / audio, USB / SD, MP3 / WMA / JPG / MP4, remote control

Mp3 player - AF generator, tuning fork and LC meter

MP3001 - 2x20W Class D Digital Amplifier (Dual Mono)

MP309 - 4-channel ADC block

MP3100D - 2x20W Class D Digital Amplifier

MP3106 - 40W Mono D-Class Digital Amplifier

MP3106S - 2x40W Class D Digital Amplifier

MP3112 - 25W Mono D-Class Digital Amplifier

MP3116mini - D-class bass amplifier 2x50W with tone control

MP3122 - 15W stereo D-class digital amplifier. China Syndrome Project (West Side)

MP3122 - 2x15W Class D Digital Amplifier

MP3123 - 2x25W Class D Digital Amplifier

MP3123 21 - D-class digital amplifier (100W) 2x25W + 1x50W (subwoofer)

MP3123-2.1 - D-class digital amplifier (100 W) 2 x 25 W + 1 x 50 W (subwoofer). China Syndrome Project (West Side)

MP3125 - 10W stereo D-class digital amplifier. China Syndrome Project (West Side)

MP3125 - 2x10W Class D Digital Amplifier

MP319 - Wireless iButton

MP31PC - Computer Bass Amplifier Platform

MP325 - 433 MHz remote control module (buttons/trigger, two relays)

MP326 - 433 MHz remote control module (buttons/trigger, four relays)

MP327 - Wireless modules 433,92 MHz. Extension for Arduino

MP3301 - Android timer

MP3302 - Smart home. Master for managing wireless modules at 433 MHz. For Android OS

MP3303 - Android thermostat (without case)

MP3304 - Biuetooth module for lighting control, 2 channels

MP3305 - Biuetooth module for lighting control, 1 channel

MP3500 - Wi-Fi relay, 2 channels (based on ESP8266)

MP3503DAIS - Microsystem: AM / FM tuner, USB / SD MP3 / WMA (player), tone block, remote control

MP3509 - Wi-Fi relay with new features

MP350SE: Universal Real Time Clock (RTC) with 4-channel load control

MP3 module MP113 with micro SD card playback capability

MP3 player? Not as difficult as you thought!

MP410 - Super Economical 2x2,2W D-Class Stereo Digital Amplifier

MP433DR1 - Wireless opening sensor

MP433DR2 - Wireless sensor for opening the 433 MHz band up to 150 meters

MP433V - Wireless Vibration (Glass Break) Sensor

MP4411 - 4-channel actuator (relay box)

MP49152 - D-class digital amplifier, 2x20W

MP538 - Analog Soil Moisture Sensor

MP560 - LED indicator

MP5613 - 2x150W Class D Digital Amplifier. PurePath™ HD technology

MP5613D 300W Class D Digital Amplifier Driver

MP5630C1 - Configurator for building a powerful single-channel bass amplifier

MP5630C2 - Configurator for building a powerful two-channel bass amplifier

MP5630C21 - Configurator for building a powerful three-channel (2.1) bass amplifier

MP5630C4 - Configurator for building a powerful four-channel bass amplifier

MP5630D 300W Class D Digital Amplifier Driver

MP5630DKD 600W Class D Digital Amplifier Driver. Housing DKD

MP5630I1 - Indicator for powerful bass amplifier (mono)

MP5630I2 - Indicator for powerful bass amplifier (stereo)

MP5630I21 - Indicator for powerful bass amplifier 2.1 (stereo + subwoofer)

MP5630I4 - Indicator for a powerful four-channel bass amplifier

MP591 - Digital atmospheric pressure sensor BMP085, 30-110kPa, 14bit

MP592 - 30A analog current sensor based on ACS712ELC-30A

MP593 - Analog Vibration Sensor

MP594 - Analog light sensor (photoresistor)

MP599 - Ultrasonic distance sensor module

MP602 - Thermocouple type K, M6 nut

MP603 - Thermocouple type K, nut M6 tip 5 cm

MP606 - Graphic battery indicator - 9V, 12V, 24V

MP701 - Relay switching unit (4 channels)

MP709 - USB relay with web control

MP712 Loran: new functions for working with analog sensors

MP713 Jerome - Remote control and monitoring via Ethernet

MP717 KBX-3D - Ethernet DIN rail relay with M2M technology

MP730 - USB recorder, voltmeter

MP731 - USB pulse generator and logic generator

MP732 - USB frequency counter, digital scale and logic analyzer

MP8036multi - automation of backup power for a country house or cottage

MP8037ADC - Single-channel ADC with the ability to control electrical appliances up to 4 kW (20 A)

MP8266-03 - WiFi module ESP8266EX-03

MP8266-07 - WiFi module ESP8266EX-07

MP8520R - PurePath™ HD receiver (2,4 GHz) high quality stereo audio signal

MP8520T - PurePath™ HD Transmitter (2,4 GHz) High Quality Stereo Audio

MP9011 - AVR programmer

MP9012 - PIC Programmer/Debugger

MP903 - Digital Stereo VHF/FM Tuner

MP910 - Key fob for 433 MHz remote control systems (MP911, MP912, MP913)

MP913 - MP433 910 MHz remote control receiver (buttons, two relays)

MP9213WIFI - Universal Car OBDII Scanner

MT1031 - Alarm system for bank card Back-card

MT1081 - USB Flavor

MT3012 - Mail Alarm

MT3033 - GPS watch-returner

MT4011 - Electric Power Meter

MT4015 - Battery Tester

MT4025 - Travel luggage scale

MT4075 - Kitchen Magnet Timer

MT5005 - Toilet lighting

MT6041 - Protective Case for Video Player

MT6060 - Video glasses

MT6070 - Video note

MT9000 - Residential SMS alarm

MT9000 BOX - Wireless home SMS alarm system

MT9021 - Autonomous dacha SMS alarm

NM1006K - Digital Multimeter (Assembly Kit)

NN103 - iButton access controller

NR01 - Radio amateur beginner's kit

NT LEDG, NT LEDR, NT LEDW - Sets of ultra-bright green (red, white) LEDs for LED cube 8x8x8

NT1291 - T-Class Digital Amplifier Kit (Tripath), 2x15W

NT1292 - T-Class Digital Amplifier Kit (Tripath), 2x25W

NT5002 - Frequency meter, timer

NT606 - Bipolar ±24V 190W Mains Power Supply (Assembly Kit)

NT800 - Battery 12 V / 1,3 Ah

NT8044 DC24V - Motorized ball valve, normally closed (NC)

NT8046 AC220V - Motorized ball valve

NT8048 AC220V, NT8048 DC12V, NT8048 DC24V - Solenoid water valves

Numlock. Soldering station with timer

N-channel MOSFETs KP505A…G

Do-it-yourself OPC client - server. Part 1 or… GSM modem integration into any SCADA

Do-it-yourself OPC client - server. Part 2 or… GSM modem integration into any SCADA

Do-it-yourself OPC client - server. Part 3 or… GSM modem integration into any SCADA

Do-it-yourself OPC client - server. Part 4 or… GSM modem integration into any SCADA

Open Ukraine RTTY Championship

PA on 2m

PARKS

Part Color Code - determination of resistor resistance by color code

PDU is simple

PIC for baby

PIC16F630 in car security system

PIC controllers are crowding out single-chip microcomputers

Microchip PIC microcontrollers

Pipeline Award: conditions for obtaining a diploma

PLL based CPLD

Primus means first. Digital frequency synthesizer

PSK IMD Ham Radio Tester

PW-WL-9 - 9 Volt Wireless Charger Assembly Kit

QC802 - Quad Core mini PC, RK3188, Android 4.2, Bluetooth, RAM 2G, flash 8G

QRPP - Transmitter

QSO EW1AA ON 50 MHZ

Quick Copper: Free Electronic Circuit Diagram Editor for Android

Raspberry Pi is your second computer

RC oscillator with optocouplers

Reader - device for working with EEPROM

RF modem for all-band SSB HF transceiver

Remote control RGB light

Roger Beep

RTTY1 (Program Description)

RU0023 - Car alarm AvtoFon D-Lighthouse

RU0087 - Mobile security device Sound guard

Russian DX Contest

RYRYRY - sequence on BK-0010

ROM disk for Baltika

SEPIC in self-powered devices

SH RGB - Color (RGB) matrix with driver. Extension for Arduino

Sinclair compatible computers

SINPO or How to grade correctly

SL-01H - Fan heatsink, 12V

Slopers

SMD components: soldering technology

SMD transformer modules for one port 10 Base-T

SN02YK - Infrared proximity sensor (range finder) up to 150 cm

SN18B20 - DS18B20 temperature sensor in waterproof version

SN21YK - Infrared proximity sensor (range finder) up to 80 cm

SSTV based ZX computer

SSTV: theory and practice

SSTV converter with digital signal processing

STEPPIR - what is it?

DIY STV

S-meter in the transceiver

TALEMA - power toroidal transformers for general applications

TDA with current feedback

Telephone VOX recorder MP3

The yellow tube amplifier

TLC2272

TO-220 from D-Pack

TURBO - no problem

UA1DZ VHF CUP 2013

UA4NX. Ten Digit LED Display

UA9JH - 82!

UBA-Spring Contest CW

UD800 - Smart home (set)

UG007B - Quad Core mini PC. RK3188, Android 4.2, Bluetooth, RAM 2G, flash 8G

UG802 - Dual Core mini PC, RK3066, Android 4.1, flash 4G, RAM 1G, Box

UG802 SE - Dual Core mini PC, RK3066, Android 4.1, flash 4G, RAM 1G

Upgrade Aoyue 2900 or T12 soldering station

USB adapter for tuning injection car engines

USB infrared receiver MP708N

USB air ionizer MT1080

USB console for controlling amateur radio devices

USB oscilloscope

USB thermometer and remote control in one bottle

USB thermometer and remote control in one bottle. Interactive WEB Server

USB digital thermostat-thermometer MP707

USB-EDGE modem with telephone function

USB-HID thermometer. Determine the likelihood of frost

usb-Relay: USB device that controls relay on and off

USB socket for laptop

Veroduino: homemade cheap Arduino

VFO with electronic tuning

Videoscape - a new word in television

visual analyzer. Short review

visual analyzer. Practical parameter measurement

visual analyzer. Checking the capabilities of the measuring complex

WALKIE-TALKIE: Japan type D

YAGI A 28 mg

Z-AMTOR - the best AMTOR controller

ZX Spectrum 128K - what is it?

ZX.25 and HF bands

Could it be easier...

And in the morning they woke up

A316 instead of KRONA battery

Emergency lighting and electronic calls in the apartment

Avometer

Auto beeper

Auto power on phone

Load switch

Auto light switch in utility rooms

Phase-locked oscillator

VHF generator

Car engine autostart

Car audio in your car

Long-lived autolamps

Automatic Running Lights

Automatic running fire

Automatic Evening Light

Automatic low beam headlights. Buzzer for cornering and engine overheating

Automatic load switching at a given time

Automatic lighting switch

Automatic light switch

Toilet light switch

Soldering iron switch off

Aquarium vending machine

AB recharging machine

Home greenhouse machine

Automatic battery charger

Automated battery charger and power supply for external devices Aza

Soldering machine

Watering machine

Automatic greenhouse - thermostat for storing vegetables

Battery recharger

Dosed flower watering machine

Automatic DRL with auto-stop system

Battery charger and training machine Azita

Home network surge protector

Surge protection circuit breaker

staircase lighting machine

Automatic water heater

The machine determines the character

Automatic shutdown of the PSU in the absence of load

Pump intermittent automatic

Automatic machine with remote control from Yauza MP-221

Light effects machine

Christmas tree lighting effects machine

Automatic lighting effects on PROM

Light effects machine with diode ROM

Light Effect Machine Fireworks

Automatic control of daytime running lights

Staircase lighting control

Automatic lighting control

Dosing machine humidifier

Automation of workflow in the office and at home. We emulate a photocopier

Automation of a corporate network. Print server emulator

Automation, or How to implement a startup delay

Computer aided design

Automated radio receiver Brigantine

Automated security systems

Automated control systems, controllers

Water heater automation

Water heater automation, or On the national economy of electricity

Water pump automation

Automation for a mini-bakery

Window automation

Toaster automation

Entrance lighting automation on AVR

Automatic ventilation of the workplace

Automatic water pump

Automatic recording of telephone conversations

Automatic telephone operator ASL-1

Automatic chargers not only powered by 220 V

Automatic CW keyer with CMOS memory

Automatic light switch based on infrared motion sensor

Circuit breaker

Circuit breaker UPS APC Back-UPS-600l

Automatic light switch

TV circuit breaker

Automatic phase switch

Caller ID

Automatic transition from reception to transmission in the RK-86 computer

Automatic anti-dazzle lamp

Automatic dimmer

Automatic stopwatch

Automatic telegraph key with memory

Automatic Telephone Attendant, Caller ID

Automatic thermostat

Automatic tester for testing transistors

Automatic inclusion of near and far lighting

Automatic activation of the cooker hood

Automatic switching on of a personal computer

Automatic inclusion of twilight lighting

Automatic turn off of the tape recorder

Turn off the TV automatically

Automatic charger

Automatic car battery charger

Automatic charger for a garage away from home

Automatic charger for lead-acid batteries (SLA)

Automatic charger for nickel-cadmium batteries

Automatic charger with three-stage charge current

Tape recorder auto-off

Automatic radio shutdown

Do-it-yourself automatic heating or Experience in using the MASTER KIT NM8036 kit

Automatic heating of a private house

Automatic room ventilation device

Automatic device for regeneration of batteries type SC

Automated programming for microcontrollers

Automatic timer for washing machine

Car radio MUSTANG CRF-280B

Car security system with remote control

Car security system with IR remote control

144-146 MHz car radio

Car radio for personal radio communication

Car alarm

car signaling device

Car-stationary radio station for personal radio communication

Car security systems on PIC12F629

Automotive voltage converters 24 V to 12 V for bus and truck drivers

Automotive relays

Car clock - thermometer - tachometer - voltmeter

Car clock-thermometer with climate control function

Car clock-thermometer-voltmeter

Car emergency brake light

Car on-board computer

Automotive climate thermometer

car music signal

Car stereo music signal Sigma

Automotive multimeter

car radio watchman

Automotive LED Light Controller

Car strobe

Car tachometer

car power amplifier

12W Low Frequency Car Amplifier

Automotive digital tachometer with automatic range selection

Autonomous SMS alarm MA3401

Autonomous protection of the territory of the suburban area

Autonomous security system based on TM

Stand-alone 32-channel programmable dynamic lighting device with a serial interface

Autonomous security device on infrared rays

Autonomous storage of information

Stand-alone device for checking dynamic memory chips

Autopager - car security system using portable CB radio stations

Auto-translation and speech synthesis of text under the cursor and from the clipboard

Tape recorder hitchhiking

auto guard

Autostrobe in LED flashlight

Auto-notification by SMS about the incoming cargo of the transport company or ... a little bit of logistics. Part 1. Tracking the status of cargo

Auto-notification by SMS about the incoming cargo of the transport company or... a bit of logistics. Part 2. Create a service

Adaptation of the American model Sony Playstation

Adapting the sound of imported TVs

Measuring head adaptation

Adaptation of imported phones

LPTBoom adapter for ChipBoom programmer

Dual channel light cord adapter

Adapter for AVU

Adapter for connection to the telephone network

Adapter for connecting a telephone set to a computer

Adapter for digital video camera

Adapter for digital modes of communication

Recording adapter for imported radio

Kinescope filament voltage meter adapter

Adapters for auto-recording information

Adaptive capacitive sensor

ABC of transistor circuitry

Alphabet of an electronics engineer

AK9601 - programmable frequency synthesizer

Academy World Encyclopedia of Travel and Radio Amateurs - the beginning of positive cooperation!

aquarium timer

Battery power plant with sinusoidal voltage 220 V 50 Hz

Battery charger - not only for professionals

Battery chokes of the DJ, DJA series

Batteries in the life of cell phones

Active anti-piracy protection

Active speaker-megaphone on chips

Resistive load in the power supply test stand

Active pair reader - key on LED emitters / sensors for security and alarm systems

Active transmitting antenna

Active cooling system for power devices

Active input circuits

Active filters in RTF-92

Active filters for subwoofers

Active signal processing unit for subwoofer channel and active low pass filter for subwoofer

Active microphone for voice recorder for $1

Active tunable reversing filter

Active three-band filter

Active low pass filter

Active low-pass filter on the LM324 chip

Acoustic resonators

Acoustic switch

Acoustic light switch

Acoustic lighting dispenser

Acoustic design of the low-frequency dynamic driver

Acoustic relay NF241

Algebra of logic

Bresenham's algorithm in thyristor power controllers

Algorithms and methods for SITOR/AMTOR systems

Troubleshooting algorithms and blocks of television receivers

Alexander Shatun, UR3LMZ. SSB/FM transverter 28/144 MHz

Do-it-yourself breathalyzer

Alternative firmware of the NM8036 kit

Alternative firmware of the NM8036 set. Part One: Thermometer Clock

Alternative VoIP Gateway

An alternative way to connect a VCR to a TV

Alpha theta bioresonator

AM/SSB receiver

AMSAT-U-ORBITA

Ear cushion - instead of a ponytail

Phone ear cushion from the anode leads of kinescopes

LED ammeter

Amplipulse for physiotherapy

Amplitude distortion of the harmonic spectrum UMZCH

Amplitude limiters

AMTOR - the successor of the teletype

AMTOR: exchange protocol

AM transceiver

Analysis and refinement of a simple broadband television antenna

Analysis of the basic principles of building HF radio receivers of the main communication

PCM code analyzer

Frequency Spectrum Analyzer

Analytical calculations of circuits on the OS

Analog of Microsoft Word

Analogues of integrated circuits

Analogues of low-voltage zener diodes

Analogues of domestic microcircuits

Analog magnetic sound recording (cassette recorder)

Analog calculators

Analog-Digital ICs

Analog to digital converters

General purpose analog-to-digital converters from National Semiconductor

Animated brake light

Anodizing aluminum panels

Anodizing of aluminum and its alloys

Anode choke of the output stage of a low-power medium-wave AM broadcast transmitter

Antenna 5/8

DDRR Antenna

T2FD antenna on US5NGH radio

Antenna UW4HW in a new quality

Rapid deployment antenna

Antenna Gamma

UHF antenna for difficult reception conditions

Antenna for DX QSO on 40m

Antenna for 21, 24, 27, 28, 30 MHz bands

Antenna for UHF band

Antenna for low-frequency HF bands

Antenna for radio security alarm

UHF antenna

UHF antenna with a complex reflector

Antenna UHF Sun

Antenna for 40 m with switchable radiation pattern

Antenna for 80 m with switchable radiation pattern

Antenna of a beggar radio amateur

Antenna with switchable radiation pattern

Tesla antenna for radio amateurs

Antenna Tetra

Pulse Antenna

Antenna array for decimeter television range

Antenna video monitoring device

Antenna switching and matching device

Antenna Watchdog

27 MHz Antennas

Antennas for GSM (900 MHz - 1800 MHz)

DIY Antennas

Antennas for emergency work

Antennas and antenna-feeder devices

Wave channel antennas

Antennas of the Wave channel type on the MW

Shireks-Meni antennas for radio amateurs (TV DM, Wi-Fi, etc.)

VNA Antenna Analyzer on Arduino Uno

Antenna unit

Antenna switch

Antenna tuner

Antenna extension

Antenna amplifier

144 MHz Antenna Amplifier

Antenna amplifier for the 1296 MHz band

Antenna amplifier UHF

UHF Antenna Amplifier

Anti - Caller ID

Anti-migraine generators

Mains powered anti-migraine

Diode eavesdropping

Caller ID - version 26. Description of service capabilities. Firmware firmware

Caller ID without power - phone

Caller ID on a computer

Caller ID in theory: services, standards

Caller ID checks TA dialer

Apparatus for magnetothermy

Plastic Welding Machine

Apparatus for electropuncture

Laser therapy device

Apparatus Ears - Nose

Hardware-software random number generator based on the sound card of a PC or laptop

Hardware magazine with the function of sending QSL cards

Equipment for monitoring the stress state of the massif by the amplitude and frequency of the seismoacoustic signal

Control equipment for pumping stations

Devices for ultraton therapy

April Kaleidoscope

AGC for micro transceiver

AGC for transceiver

AGC for RA3AAE transceiver

FET AGC

Communication receiver AGC

ARUS for communication receiver

Archive for slides

Architecture of 8-bit microcontrollers of the AVR family

Absolute UMZCH architecture

Architecture and instruction set of MCS-51 family microcontroller

ATTINY15 microcontroller architecture

Assembler for Beginner Sinclairists

Astigmatism

ASE + programmer

AC impromptu

ATV - DTV: filters

current attenuator

Current attenuator - voltage stabilizer

Audio processor 2.1 (stereo + subwoofer) NT1217

2.1 format audio system - DIY

Audiophile amplifier on 4P1L

Afghanistan on air

Ah, a saucer, a flying saucer ...

Air ionizer from ... scrap

Basic Matrix Crystals (BMC)

The base unit of the eight-voice EMP

Basic power amplifier for MW range

baristor power supply

Barrier RF generators on bipolar transistors

Transistor barrier mode

Battery two-tube direct amplification receiver and subscriber loudspeaker Tula

Ticker

Running line on a microcontroller for beginners

Running line on LEDs

running lights

No ringing

No leaks or dirt

Safe mass in the car

Non-Inductive LC Sound Generator

Inertia-free SADP with optocoupler modulator

Belarusian roulette

White LEDs with a diameter of 5 mm GNL-5013xx

shore lot

Endless cassette

Direction indicator contactless relay

Proximity magnetic switches and manipulators

Non-contact detector for finding old electrical wiring in walls

Contactless KPI to RA3AO transver

Non-contact network monitor

Proximity probe

Loopless crystal oscillator

Uninterrupted lighting of garages and basements

Free Starter Kit V850ES/Jx3-L USB from Renesas Electronics (UK). From personal

Free Starter Kit V850ES/Jx3-L USB from Renesas Electronics (UK). From personal experience

Free night light

Wireless guitar and microphone

Wireless communication through water barriers

Wireless lighting control based on standard wiring

Wireless FM microphone

Wireless headphones based on LibertyLink magnetic coupling technology

Wireless subwoofer for LED TV

Transformerless power supply UMZCH

100W transformerless switching adapter for laptop

Transformerless voltage converter

Transformerless load power stabilizer with LCD display

Transformerless stabilized power supply on an integrated stabilizer

Filterless way to reduce Kg

Antique technology business: its essence, state and forecast

Biorhythm

Beeper without capacitors

Beeper for frequency dialing

Beeper on the analogue of the injection-field effect transistor

Bipolar ROMs with one-time electrical programming (PROM)

Bipolar transistors in UMZCH: What could be worse?

Bipolar transistors and their applications

Bipolar power supply

Bipolar stabilizer with adjustable protection

LSI controller of a multi-digit semiconductor indicator ROBIN-1

BIS KR/EKR1835VG22 - multi-digit indicator controller

LSI microcontroller for signaling devices

BK - Super Computer

BK 0010 and a tape recorder: about the reliability of information exchange

BK 0010-01 - musical instrument

Block of 4-channel ADC for the Guardian GSM security device

Automation unit for remote control of the searchlight

Time slot block

Telephone call block

Aquarium Life Support Unit

LC measurement block in a multimeter

27 MHz low-frequency signal processing unit for car radio

Paging block

Power supply unit

Power supply - in two hours

Power supply - battery charger with automatic switch-off

Power supply - from computer to universal

Walkman AC adapter

Calculator power supply

Power supply for Baltic type computers

Power supply for structures based on rod radio tubes

Power supply for soldering station

Power supply for P109

Power supply for R-311

Power supply for a radio amateur

Power supply for Tetris

Power supply for electronic-mechanical watches

Power supply for avometer Ts20-05

Power supply on LM317T

FET power supply IRF3205

Power supply transistor KP728

Power supply with voltage and current indication

Power supply with PWM stabilizer

Power supply with electronic voltmeter

LED power supply

11 GHz amplifier power supply

Sound reduction unit in USCT TVs

Block FC-3Ch on one chip

Block PCHZCH

Block SKD-24 in a lamp TV

Line scanning block without TVS, UN and VV kenotron

Line scanner for video monitor

VHF unit for two bands

Block VHF-IP-2 for the range of 100 ... 108 MHz

Engine cooling fan and intake manifold heater control unit

Dimmer control unit

Reducer control unit from P-12

Wiper control unit

Stereo complex control unit

Stereo complex control unit. Remote control unit

Stereo complex control unit. Switching unit

Stereo complex control unit. Power Supply. Network switching unit

Stereo complex control unit. Programmable timer

Stereo complex control unit. Electronic volume control

Control unit UMZCH with conventional potentiometers MP800

Central locking control unit

Block of fixed settings with digital indication

Electronic ignition unit

Electronic ignition block NM5421 for classics

Electronic ignition unit with AC stabilizer

Pulse ignition blocks in a car

Blocks of pulsed plasma ignition in a car

Blocks of logic for decoding the state of the chain of comparators

Radio power supplies

Blocking generator and its application in IVEP

Blocking generator and its application in IVEP. Single-cycle self-generator PN

Blocking generator and its application in IVEP. Single-ended blocking oscillator

Blocking generator and its application in IVEP. Single-cycle stabilizing PN

Blocker director - secretary

Blocker for paired phones

Intercity blocker

Blocker on the chip KR1059KN2

Parallel phone blocker

Blocker with light indication

Parallel phone blockers

Parallel phone blockers

Blocking on dinistors

Extension phone lock

Listener's notepad

Bluetooth technology. Control from your mobile

Soldiers of the invisible front - 2 or ... We follow the changes in the catalogs

On-board control system with speech output of information BSK-3

On-board computer for VAZ vehicles with diagnostic and error decoding functions

The fight against old age

PSU for microdrill

Breeze in the apartment

Alarm Clock Dawn

Alarm clock and tick-tock scheme

Alarm clock Dawn-2

Bootloader for Mega

Buffer power for Speedola

There was a custom in Russia - to listen to the BBC at night

Past and thoughts

Quick assessment of the quality of ignition systems

Rapid resuscitation of the radiotelephone keypad

Fast acting overload protection

High-speed analog-to-digital converters from National Semiconductor

High-speed IC series KR1533

High-speed CMOS logic integrated circuits of the KR1554, KR1594 series

Quick turning on of a fluorescent lamp (LDS) without chokes

Fast and accurate calculation of the convolution transformation on hardware accelerators with a minimum number of multiplications

Fast and accurate calculation of elementary and special functions on hardware accelerators without multiplication using addition formulas

Fast and accurate calculation of inductances using hypergeometric series and elliptic integrals

Fast and accurate calculation of linear inductances, capacitances and resistances of cables and printed tracks using the geometric mean distance

Household power regulator

household timer

Household electronic timer

Household electrophoresis

Household broadcasting receivers of BALTIKA series

Household radio receivers of the ARZ series

Backupper or ... backing up data when turning off the PC

budget blow

Application Bureau JAUCH QUARTZ - the pulse of progress in action

In the beginning there was a radio amateur

At lunch break

Waiting for developments

In the land of eternal summer

In the land of morning freshness and Juche ideas

In a school pencil case, but ... without quartz. small radio station

Live RU3C!

Vacuum triodes

Variant of the local oscillator of an amateur transceiver

F9FT Antenna Design Variant

Option for a single-band antenna of a poor radio amateur

Option for connecting the microcontroller to the RS-485 network

A variant of auto-bias stabilization in the lamp cathode circuit in an PA with a common grid

Variant of the DPKD node

Variant of the traction solenoid control unit

Antenna options for 145 MHz

Options for switching on burrless terminal electronic assemblies

UW3DI build options

Options for self-manufacturing of HF rings

Variations on a given theme

Variometer - matching device!

Wattmeter instead of thermometer

Wattmeter, voltmeter, ammeter, TrueRMS power factor meter based on ADE7756 chip

Your online radio receiver or ... Hunt for amateur radio broadcast

Your modern TV Vityaz

Your cell phone

Introduction to the transceiver. CB-BAND

Introduction to the transceiver. I am building a HF radio station with an electronic transmit-receive switching circuit.

Great and mighty on the international air

Bicycle, voice!

Bicycle electric kit

Bicycle counter based on an electronic pedometer

Velofar with LEDs

Vernier

Vernier device

Vertical antenna for low bands

Vertical frame at 160 m

Bobtail Curtain Vertical Radiators

Vertical HF Antennas

Top drive antenna

The whole world in your computer

The whole world on the scale of the radio

eternal lamp

Eternal light bulb

The eternal glow of the kinescope

Eternal New Year

Second tier broadcasters

Interaction of BPEVM Vector-06Ts with a tape recorder

Interaction of ULF with an acoustic system

Weighting filter for audio measurements

Taking the castle - virtual game

Vibrator DJ9BV-LONG-YAGI

Vibrator for electronic fishing rod

Triangular Arm Vibrator

Vibrodynamic MT6030

vibrodevice

Vibrating table for laboratory testing of radio engineering devices

Vibrostop for boards

Video adapter

VHS and S-VHS video cassettes

Video switcher Frame in frame

Video corrector

PAL video processor

Video amplifier with biphasic output

Virtual cuvette

Virtual barrel organ

virtual instruments. DTMF. Do-it-yourself spectrum analyzer

virtual instruments. LPT port virtual monitor

virtual instruments. Signal generator without soldering iron

virtual instruments. Morse code synthesizer

Virtual or ... iron?

Virtual oscilloscope

virtual resistor. color coding

Vitafon

One button power on/off ATX power supply

Turning on the SSB detector in the Ishim-003 radio receiver

Turning on the speakerphone through the PBX

Turning on the lighting lamps

Turning on the load for a certain period of time

Turning on low-voltage electrolytic capacitors

Switching on the lighting with the doorbell

Turning on the PC with a mobile phone. The easiest way to interface

Turn on the car vacuum cleaner in a 220 V network? Easily!

Owners of paired phones

Vladimir Naumenko. Cyclic timer for honey creamer

The influence of nearby objects on the operation of the pin and lightning protection

Effect of voltage waveform on voltmeter readings

Instead of paint... paraffin

Instead of LATR ... transistor

Instead of neon

Instead of tweezers - a magnet

Instead of radio - phone

There were hesitations at first. From pendulum to contour

External GSM antennas

External GSM antennas. Field trials

Cell phone external antennas

ICD2-SeVeN in-circuit debugger

In-circuit programmer for AVR microcontrollers

plumbing antenna

Water meter anywhere, or Remote reading system for water meters

water machine

Exciter for personal radio station

Returner 5 targets travel model MT3031

Effects of electric current on the human body

Around the PCB (technology tips)

Wavemeter for short waves

Voltmeter - Ammeter - Charger

Voltmeter - ammeter on ATMega8

Voltmeter - ammeter with analog scale on STM8S

Voltmeter of the onboard network of the car

RMS Voltmeter

DC voltmeter, ohmmeter with linear scale

Voltmeter with linear scale

Extended scale voltmeter

Questions of parallel programming of microcontrollers

We restore old VEF telephone sets

Restoring an old TV (Temp-6M, Temp-7M)

Recoverable thermal fuse Iva

Stepper driver recovery

Restoring the capacity of sealed nickel-cadmium batteries

Pickup restoration. Improving the reliability of the stabilizer

Kinescope restoration with constant heat

Recovery of acid batteries with alternating current

Fastening restoration

Recovery of a faulty chip K174UR3

Restoring the normal operation of the PC

Recovery of lead batteries

Recovery multiplier UN 9/27 - 1,3 A

Voskhod-3M with electronic ignition

Eight-channel automatic lighting effects on AT90S2313

Eight-channel PC-based lighting effects machine

eight channel switch

Eight-lamp receiver Miniya-4

Eight-lamp radiola Rigonda

So the summer has passed ... or the indestructible well

So the summer has passed ... or the indestructible well. Refinement

Impressions from the amateur radio festival Domodedovo-2012

Time selection of useful signal

Temporary temperature control in the refrigerator

All the wealth of radio thought

Can all aeronizers be called Chizhevsky's Chandelier?

All about the Z80 microprocessor

All phases flock to zero

All-wave antenna LEVY

All-Wave Low Noise Television Antenna Amplifier

Always with music. Receiving radio stations from the transmitter

Always with you…

All-band matching device to LW

All Band Transceiver

All-band Ural-84M

global flood

Auxiliary voltage supply 5 V

Embedded mini system MP2897 (FM, USB, SD, remote control, clock/alarm clock, LED display)

Built-in Li-ion battery charging in a modified Chinese lantern

The second door is for lazy people. Lighting machine in the vestibule

The second life of a child's toy or ... Water level sensor

Second life for Miele

The second life of the ionophone on the NE555

The second life of Chinese watches

The second life of a computer PSU

The second life of a capacitor. Soldering tool for resistors

The second life of a melodic electromechanical bell

The second life of a broken cell phone

The second life of fluorescent lamps

The second life of the LED

The second life of the old boombox

The second life of the telephone

The Second International Scientific and Practical Conference on Museum, Collection and Historical Issues of Radio Engineering

The second youth of the TV

Second speed in Vesna

Reuse of disposable syringes

Recycling...capacitors

Secondary SMPS with self-excitation for high voltage loads

Second coming?

Transceiver input circuit

Input device and digital scale control unit

Alarm Input Device

RF generator

RF Speech Processor

RF detector from improvised parts

Mitsubishi RF and microwave transistors

Mitsubishi RF Power Amplifiers

RF generator for PC

HF decoder for CATV network

Choosing a metal detector

Selection of diodes for starting oxide capacitors

Selecting an Oscilloscope Test Probe

TV channel selection

Core selection for a broadband ferrite antenna

Selecting the conversion frequency

Derivation of formulas for calculating the inductance of coils of various shapes by integrating expressions containing hypergeometric functions

Get the most out of your guitar

Call for phones with caller ID

Caller

Caller for hubs

Phone caller

Caller to SLT

Switch 220 V for laptop

Light switch with remote control

IR light switch for one lamp

Power switch with sleep mode

Remote antenna indicator

Remote control panel for digital devices

Remote dividers for oscilloscopes with high-resistance input

Rectifier for battery charging

Current multiplier rectifier with galvanic isolation

Quadruple rectifier

Triac rescued. Inclusion in the starting winding of the refrigerator

Chip release

High voltage optocouplers

High-voltage switching transistors KT8170A, B1

High voltage transistors KT520, KT521

High-voltage transistors KT8126A,B

High-voltage transistors KT8164A,B

High-voltage transistors KT8228A…B

High Voltage Ultrafast Diodes and Diode Assemblies

High voltage power supply

High voltage blocking generator

High voltage transistor KT8247A

high voltage amplifier

High-quality PWM PSU for imported transceivers from ATX computer PSU

High quality RIAA corrector Cristal

High quality hybrid amplifier

High quality tube amplifier

High quality tube power amplifier

High quality transistor UMZCH

High quality power amplifier

SD Series High Performance Battery Chokes

High Stability Battery Chokes SA Series

Highly stable A note generator for tuning musical instruments

Highly stable signal generator

Highly stable GPA

High stability point-to-point generator

High frequency oscillators in digital devices

High frequency transistors

High Frequency Power Amplifiers

High-frequency adapter for demonstrating the principles of radio communication

High frequency millivoltmeter

Highly sensitive hidden wire finder

High performance UHF antenna

High-efficiency transistorized UHF

Exhibition of technical creativity You can do it!

Output loop system of VKS amplifier 1-7

Output optical device SDU

Output Stage for UY5DJ Power Amplifier

Output stage on GMI-14

Radio output stage

UZCH output stage

Output thyristor stage CMU

Output indicators

VEF-SUPER M 557 - one of the pioneers of the post-war era

Vyatka-automatic - like new

Vyacheslav Kalashnik. Phase failure indicator

Vyacheslav Kalashnik. Probe for testing high-voltage poles

Vyacheslav Kalashnik. Synchronous rectifier

Halogens last longer

Galvanic isolation of analog signals

Galvanic cell with increased energy intensity

Galvanic extension of conductors. Application, equipment, materials and modes

Electroplating conductors: going back to printed

Clearing zero in the high-order digits of the clock

Nail - mandrel for the inductor

White noise generator

Bipolar pulse generator

Video pulse generator

Video Signal Generator on PIC16F84

RF generator

RF and LF signal generator

High voltage generator on NE555

Morse code generator

Generator for tuning amateur radio equipment

Radio tuning generator

Generator for tuning CB radios

Kirlian photo generator

Telephone Line Test Generator

Electronic engraving generator

Pulse generator

Pulse generator 1…10 kHz with duty cycle 2

Long duration pulse generator on a TTL logic chip

Infralow Frequency Pulse Generator with Thermal Acoustic Feedback

Pulse generator on a CMOS switch

Pulse generator with separate frequency and duty cycle adjustment

SSTV Test Signal Generator

TV Test Signal Generator

TV test signal generator in a matchbox

Test television signal generator on one IC

465 kHz oscillator with amplitude modulation

Generator on K118UD1A

Generator on a TTL logic chip

Generator based on a two-transistor analogue of a tunnel diode

TTL oscillator

Mood and health generator

Remote controlled mood generator

Continuous Oscillation Generator

Low frequency generator - indicator of short-circuited coils of transformers

Burst generator

Smooth Range Generator for Up Conversion Transceiver

DC generator

Rectangular pulse generator

Oscillator with watch quartz

10,7 MHz and 6,5 MHz FM generator

Light pulse generator

Frequency grid generator

Call Signal Generator

Call signal generator in devices with caller ID

Call signal generator for phones with caller ID on the K580VM80A processor

Signal generator

Generator of sinusoidal oscillations on a lambda transistor

Triangular step voltage generator

TV Signal Generator

Noise generator

Voltage controlled generator

Generator devices on a thyristor-transistor key

Voltage Converter Generator

Pulse generators - elements of sound indication

Pulse generators based on analogues of injection field-effect transistors

Schmitt trigger pulse generators

Ramp generators

Generators on the timer 555

Op-Amp Rectangular Pulse Generators

CMOS-series signal generators

Sinusoidal voltage generators

Standard field generators

Office noise generators

Geostationary earth satellites

Reed switches of domestic production

Germanium transistors in low voltage regulators

Germanium stabilizer and wearable battery charge

Antenna amplifier sealing

Local oscillator for MW-band transceiver

Local oscillator with piezo filter

heterodyne resonance indicator

Organic glass bending

Flexible video camera with backlight

Hybrid model of packet switching protocols

Hybrid-Integrated Broadband Power Amplifier

Hybrid equalizer and switch ICs

hybrid cascade

Hybrid Power Amplifier

Hydroionizer

Hyper-bright LEDs

GIR - wavemeter - GVCh

Gyrator filter on transistors with electronic frequency tuning

Garland running lights

VOX AC30 guitar amplifier

GKCh

GKCh on the timer 555

Chapters from the TNC2 packet communication controller user manual

Jamming of transmissions, or radio warfare on the air

Talking clock

Talking watch-thermometer - voice block

Talking widget-client to WEB server of USB thermometer

Talking bell on PIC18F252 Who is there?

Headphones without wires

Headphones… without wires!

Voice of a distant land - Aotearoa

The voice of the Pope on the air

Voice of Free Vietnam

Theremin's voice in the XNUMXst century

Voices (frequencies and hours of operation of broadcasting stations)

Voices of Russia

Horizon receives satellite TV channels

Getting ready for the new year: assembling a festive LED cube 8x8x8 based on the LED CUBE 8x8x8 Nano kit and the MB NANO motherboard

GPA to the Ural-84 transceiver

GPA based on an LC self-oscillator with a capacitive three-point: calculation basics and work efficiency

GPA with automatic frequency stabilization

GPA with quartz stabilization

Gradations of brightness when PC Junior is connected to a b/w monitor

gradient relay

Gradient detector - a device for monitoring signal deviation from the norm

Graduated KPI

Hard drive thermometer

Graphs for converting high-frequency voltage at 50 and 75 ohm loads into power

Graphs of the dependence of the current through the capacitor on the capacitance at a voltage of 220 V

Graphic copy of the screen in the ZX-Spectrum

Graphical software development environment Algorithm Builder

Graphical signal analyzer

Heating cable for country water supply

Fretboard microsynthesizer

Neck electric organ Lyra

Loud-speaking telephone set-top box with low current consumption

Hands free telephone remotes

Loud-speaking intercom for 10 apartments

Loud-speaking radiotelephone

speaker phone

GSS on one chip

GU-74B with grounded screen grid

Gumer Gayazov. color and code. Color and Code 10.x and SMD codes

Let there be light for the fish

Long-distance communication on NE - no problem

Motion sensor for balcony guard

Knock sensor

Alcohol vapor sensor

DC current sensor (to multimeter) on Hall element

Radio emission sensor

Glass break sensor

Liquid level sensor

Moisture sensors for windshield wipers

Security alarm sensors

Forward bias sensors in controlled generators

Temperature sensors DS18B20

ASM, AC and AS series current sensors

Two audio players on ATtiny

Two timer options with shutter speeds from 1 sec. up to 24 hours

Two UHF converters

Two voltages from one winding

Two very simple timers

Two ways to make a printed circuit board

Two timers

Two antennas for receiving ADS-B telemetry

Two antennas for CB radio stations

Two antennas on one cable

Two simple antennas

Two simple designs for beginners

Two simple TV antennas

Two SIM cards in one phone

Twelve-tube radiola Estonia-55

Doorbell - in a few minutes

Doorbell Chip Chirik

Door electric lock

door for lazy people

double joystick

Two voice alarms

Two-voice krugovoks and krugovoks on logical ICs

Two-voice stylophone

Two-voiced stylophone

Dual Band Pocket Receiver

Dual band VHF unit

Dual Range Frequency Counter

Two-channel device for smooth extinguishing of light in the passenger compartment

Two-channel oscilloscopes, switching attachments

Dual Channel DPP Audio Amplifier

Two-channel voltage stabilizer on K174UN20

Dual channel stabilized dimmer

Two-channel stereo playback amplifier KR1075UL1

Two-channel timer for glass and mirror heater

Dual channel phase-compensating receiver with 180 degree phase separation

Dual Channel USB Digital Oscilloscope BM8022

Two-stage antenna amplifier of the MV - UHF ranges with a TV signal splitter

Double watch battery recovery device

Dual Object Digital Thermometer

Full wave measuring rectifier

Bipolar voltage from USB

Bipolar power supply

Bipolar voltage converter

Bipolar Adjustable Voltage Stabilizer

Bipolar mains power supply ±24 V, 190 W on mains flyback voltage converters

Two-threshold comparators and their applications

Dual-mode memory

push-pull converters

Push-Pull Inverter Based on Emitter Power Follower

Push-Pull Inverter with Pulse Current Generator

Two-stroke inverter with battery overcharge protection

Duplex Ionophone. First experience

Two-stroke Loftin-White

Push-pull non-isolated voltage converter on the MC33025 chip

Push-Pull Half-Bridge Inverter Without Through Current

Two-tone melodic signaling devices

Dual Tone Call

Dual-frequency sinusoid generators based on lambda elements

Nine-tube radio receiver Riga T-689

Standby mode in CB radio

The current model of the lighthouse

The current model of the traffic light

DOLBY PRO LOGIC decoder

PAL decoder

Cable TV decoder

Decoder for tube TV

PAL decoder

PAL decoder on TDA 3560 chip

PAL color decoder

Satellite Program Decoder

PAL/NTSC decoders in older TVs

Multi-channel audio decoders

Decorative electronics - a new direction in the world market!

Making a modern Hi-Fi amplifier

Making a flashlight

Divider on the decoder

Voltage divider

Voltage divider for multimeter

Divider with variable division ratio

Huey Jann high power LED display stands

Demonstration training complex Principle of radio communication

Dismantling by additive method

Dismantling with a needle

Hacksaw blade holders for metal

Descrambler for receiving the POLSAT program

Descrambler of scrambled TV channel

Battery Desulfator

Battery desulfator with current regulation

Desulphated battery charging

Ten-tube radio receiver Belarus-57

Ten-tube radio receiver Riga-10

Ten-tube broadcast receiver TPS-58

AM detector

RF detector

Cell phone radiation detector

Polygraph

Music ear detector

AC detector

IR Proximity Detector NF441

RF detector

Microwave field detector

hidden wiring detector

Counterfeit currency detector

Electromagnetic field detector

RF detector head for multimeter with diode continuity mode

Detector-thyristor speed controller of AC electric machines with series excitation

Detector radios

Detector radio

Detector radio receiver with a low-impedance earpiece (a methodological development for a radio circle)

Voltage detectors

Children's electronic construction kits MIRACLE KIT - a new product line MASTER KIT for children's technical creativity

Decibels and their properties

Decibels, phons, nepers

Cheap DP Series Power Inductors

cable TV decoder

Joystick - DIY

Joystick - impromptu

Cell phone battery diagnostics

TV diagnostics without special devices

Diagnostic POST Card PCI

Coil transfer diameter in the P-loop of transmitters

27 MHz band in Leningrad-006 receiver

UHF range in a tube TV

Band filters

Bands 10, 18, 24 MHz in U3DI transver

Voice recorder plus hearing aid

Dynamic indication, keyboard matrix and EEPROM operation

Widespread dynamic heads

Dynamic sampler

Dynamic squelch on K157HP4

Dynamic bias in a tape recorder

Diode in a lamp

diode bias

Diode current sensors in the load switching control device

Diode bridges KTs303, KTs419

Diodes domestic

Diodes Schottky

Diploma Vostok-3

Diploma program Ivan Poddubny - 2015

Disco ball

Discrete analog expander

Discrete generation of test television signals

Discrete-continuous indication

Discrete Hall elements of domestic production (reference information)

Pulse Width Discriminator

Dispatch services

SSTV Converter Display Module

Remote activation of the transformer

Phone remote listening

Remote relay

Remote control of the aquarium via the Internet

Remote control on TV with SVP-4-1

Remote computer control

Tape recorder remote control

Remote control of the rig layout

Remote control of models

Mobile phone based remote control

Remote control by phone

Remote control of the telephone using sound

Remote control UZCH

Remote control UMZCH

Remote detector of microwave field

Remote Antenna Switch

Remote smooth radio light switch Aladdin

Remote electronic bodyguard

Distortioners

Distortion

DM series differential inductors

Dielectric resonators in microwave amplifiers and generators (reference material)

For those who run SR/M on PC Baltic

For those who design dosimeters

For those who want to save their nerve cells

UHF converter

Daytime running lights on any car from standard high beam headlights

Add-on device for satellite receiver NTV-3000

Welcome to DOS 5.0!

Car window closer

Rain is not a hindrance

Dosimeter with continuous display

Durability of incandescent lamps

Home radio engineering

Home master

Home high-quality single-cycle power amplifier on lamps 6S19P and 6P31S

Home measuring complex based on digital scale-frequency meter NM8051

Home control of radioactivity of products

Home lamp vinyl corrector

Home television system and its evolution

Do-mi-sol-128

Домофон

Additional indication of operating modes

Optional flash for digital camera

Additional features of phones with caller ID

Additional nodes to the security motion sensor

Additional microphone

Additional amplifier for electronic alarm clock

Refinement of the CW-key on CMOS chips

Completion of Defender-155 for PC users

Refinement of RA3AO

Refinement of TRX RA3AO

Upgrade UPS APC Back-UPS 600I

Refinement of ZX-Spectrum

Refinement of the lighting effects machine

Refinement of the active acoustic stereo system SP-J10

Refinement of AON

Improvement of caller ID on Z80

Refinement of a non-contact probe

Refinement of the MTs-31 block

Refinement of blocks BTs-1, BTs-2

Finalization of the BPU

Refinement of Vega-MP-122S

Refinement of the generator for checking telephone lines

Finalization of Horizon-655

Refinement of the GPA UW3DI-II

Refinement of the alcohol vapor detector

Refinement of the intercom CYFRAL

Refinement of the DPKD transceiver RA3AO with an arbitrary IF

Refinement of the DFT in the RA3AO transceiver

Modification of the battery charger

Refinement of the charger for small batteries

Finalization of the call Unison

Refinement of imported devices

Refinement of imported phones

Refinement of the II-mixer stage of the UW3DI-2 transmitter

Completion of compact cassettes

Refinement of the PDA capacitor

Design development Daytime running lights

Refinement of the Leningrad version of the ZX-Spectrum

Refinement of LPPT-47-11-1

Refinement of an amateur frequency meter

Refinement of the melodic signal

Refinement of the mobile phone Sony Ericsson K510i

Refinement of the musical call on the UMS chip

Refinement of the multimeter M-830V

Refinement of the set Start 7176

Finalization of the soldering iron

Switch refinement

Refinement of the Polyfunctional Highly Sensitive Photometric Detector

Refinement of the R-250-M receiver

Finalization of the probe for testing thyristors

Refinement of Radio-76M2

Improvement of the amateur radio frequency meter

Refinement of the radio microphone

Refinement of the radio receiver Veras RP-225

Refinement of the radio station URAL-R

Refinement of the radio station Ural-R (FM)

Refinement of the radiotelephone Sanyo CLT-55km

Refinement of the RTF-92 radiotelephone

Refinement of Radioelectronics-001 stereo

Refinement of the lamp flickering lantern

Refinement of the YOSAN JC-2204 CB radio station

Refinement of the microwave oven

Completion of the network adapter

Refinement of the CASIO CT-370 synthesizer

Refinement of SKM-24

Refinement of the TA blocking scheme

Refinement of the TV launch scheme

Timer refinement

Completion of the timer of the VCR Elektronika VM-12

Refinement of the tachometer in the car

Refinement of the TV Horizon TC-431

Refinement of the Electron-380 TV

Refinement of the phone

Refinement of the handset

Refinement of telephone sets

Refinement of telephone sets from Southeast Asia

Refinement of telephone sets with caller ID on Z80

Refinement of the RA3AO transceiver

Improvement of the UA1FA transceiver

Refinement of the Albatros transceiver

Refinement of the Radio-76M2 transceiver

Refinement of the RA3АО transceiver

Refinement of the Lot 15-U-201S amplifier

Refinement of the Sezam remote control device

Refinement of the digital autoguard

Refinement of the digital scale

Refinement of the digital scale TsSh-01

Refinement of TsSh-01

Refinement of watches Polesie-02

Refinement of the frequency meter

Refinement of electric ignition for a gas stove

Refinement of the electroshock protection device

Improvements of the radio station Volna

Improvements to the phone server on the Z80

Modifications of the RA3AO transceiver

Modifications of the Albatros-160 transceiver

Advances in information and computer technology

Line access via code only

Driver for CONSUL

Print driver for CONSUL

UV LED Driver

Negative Bias Pulse Driver for IGBT Control

Driver. Power amplifier 1…30 MHz

Wood burning stove with SMS control

Chokes

Throttle from improvised means

We are friends with the theoretical foundations of electrical engineering

Duplication of control lamps with a call

Duplicate the turn signal

thinking night light

duplex radio intercom

Smoke detectors

Breathe electricity!

Euro plug

European beacons 144 MHz

Let's go, swim, fly and don't forget the broadcast!

EK-501 WONDER KIT

EK-502 WONDER KIT

EK-503 WONDER KIT

capacitive relay

Capacitive relay for lighting control

Capacitive lighting control relay

Capacitive machine

If the PSU is phoning

If your SKYWORTH won't turn off with the remote control

If you want to become a radio amateur

If there are no quartz...

If the required lamp is not available

I have an idea...

There is a custom in Russia - to listen to the BBC at night

Another Recipe for Glory

Another way to restore keyboard contacts

Another way to make a printed circuit board

Another way to revive Glory

Another way to eliminate TVI

Another revision of the tape recorder-set-top box

Another implementation of the soldering iron power regulator

Another use of the calculator

More about the Baltic

Once again about the introduction of the Russian frequency grid in imported C-B radio stations

Once again about the inclusion of low-voltage electrolytic capacitors

Once again about the capabilities of the telephone server

Once again about the finalization of the R250M

Once again about replacing the horizontal transformer of the LG CF-21E60 TV

Once again about Cyrillic in ZX-Spectrum

More about computers compatible with the ZX Spectrum

Once again about the alteration of TST-12-5

Once again about connecting ZX-SPECTRUM to ULPCT (I)-59/61 TVs

Once again about connecting a PC to ULPTSTI TVs

Once again about stepping debugging for Z80

Once again about checking the LCD

More about Ruby

Once again about automatic chargers powered not only by 220 V

Once again about increasing the durability of kinescopes

Once again about URAL 84M

More about layout

Jaco - multifunctional talking light switch with voice control

Fried…passiki. Belt repair

Liquid crystal indicators and their application

Powertip Liquid Crystal Displays

Liquid Crystal Modules

Liquid crystal devices for displaying information

LCD indicators

Why scold the poor figure?

Forgotten Positive Feedback Circuit

Driving screws with an electric drill

Summer assignment

Magnetic field generator for tape recorders

Voltage converter master oscillator without through-current effect

Master oscillator with adjustable frequency and duty cycle on KR1006VI1

Lighting off delay

gas lighter

Lighter for gas ... from 10 parts

Ignition with a new way to ignite the mixture

Clamp for connecting transistors

Clip for ATtiny13 firmware

Clamp for transistor

Grounding. New old problems

Murphy's laws for radio amateurs

Replacement 1Ts21P

Replacement 6P45S

Replacement of reed switches in devices with caller ID

Replacement indicator ALS318

Replacement of K174XA26 in communication devices

Replacement K237GS1

Replacement KR1006VI1 (NE555)

Replacing lamps in the R-311 receiver

Lamp replacement 6P45S

Replacing a 6P45S lamp with a GU-50

Replacing the lamp 6R4P

Replacing the lamp with a diode

Replacing the microcontroller in the TQFP-64 package

Replacing the chip K1106HP1

Replacing the key chip KR1014KT1

Replacing the KR1021XA5 (XA8) microcircuit in the scanning submodule

Replacement of radio tubes in TVs

Replacing the radio tube 6R4P

Replacement of microwave transistors in antenna amplifiers

Replacing the network winding

Replacement of the horizontal transformer of the TV LG CF-21E60

TVS replacement in RFT TVs

Replacement of TDKS-9

Replacement of transformers

Replacing the carbon microphone

Replace Soap with… a Transformer

TV lock

Block lock - double electronic key

Mindfulness about electricity

Writing and reading MS signals

Recording telephone conversations ... automatically

storage devices

USB Memory Logic Analyzer BM8023

Refilling cartridges

Parallel phone dialing restriction

Starting switching power supplies

Launch of LDC-40

Launch of faulty LDC-40

One button start. torrent killer

Starting the stabilizer on the OS

The birth of radio communications

Foreign microcircuits of communication radio receivers

Foreign microcircuits: firms and brand names

foreign transistors. Series 2SB

foreign transistors. Series 2SC

foreign transistors. Series 2SD

Charging car batteries

Charging batteries with reduced voltage at the terminals

Charge SC-21 from ... network

Charging a Li-ion battery with a mobile phone charger

Charging batteries in the field

Charging batteries from the radio network

Charging batteries according to Woodbridge

Charger and recovery device

Charging and desulfating machine

Charging and desulfating machine for car batteries

Charger

Car battery charger - two in one

Charger for 12V batteries

Charger for Li-Ion batteries

Charger for Ni-Cd batteries

Car Battery Charger

Battery charger 4...7 Ah

Charger for recovery of acid batteries with cyclic current

Charger for lithium batteries

Charger for small batteries

Charger for NKA

Laptop charger

Charger for AA batteries

Charger for LED flashlight

Charger for lead-acid batteries

Cell phone charger

Flashlight charger

Charger for four batteries

Screwdriver charger or Power supply 14,5 V 400 mA

Pulse current charger

Charger for radiotelephone

AA battery charger for mobile phones

Charger on a switching power supply

Charger on a chip LNK501P for a cell phone

Charger on field inverter

Power Inverter Charger

Charger on a thyristor inverter

Charger on a transistor key

Charger with protection against short circuit in the load

charger

Charging device

Chargers for Ni-Cd and Ni-Mh batteries

Battery chargers

DIY chargers

Sharpening fixture

Capturing sound using the WIN API

Why do bees need a tape recorder? Device for collecting bee venom

Power supply protection

Protection of household appliances from overvoltage and undervoltage in the electrical network

Speaker protection

Rectifier Diode Protection

Protection of imported TA

Protection of imported telephones

Protection of the key transistor by current with adjustable threshold in the oscillator

SAT TV converter protection

Incandescent lamp protection

Filament protection of high-power radio tubes

Mosquito protection with programmable vaporizer

Computer virus protection

Reverse polarity protection for DC radio equipment

Phone piracy protection

Protection against interference of starting currents of electric motors

Protection against phone pirates

Protection of radio equipment against overvoltage

Protection of the regulating transistor in the power supply

Protection of REA against voltage surges

Microwave transistor protection

Dial gauge protection

Phone protection

Protecting your phone from pirates

Protection of the telephone line from unauthorized connection

Protection of three-phase motors

Three-phase motor protection

Motor protection

Motor overload protection

Motor protection against two-phase operation

Protection of electronic devices

CRT oscilloscope protection

Protective attachment to the power supply

Phone Protector

Protective devices against increased load current and abnormal mains voltage

Protective arrester at the output of a low-power medium-wave AM broadcast transmitter

We protect the program!

Phone call

call in fifteen minutes

call from relay

Call from ... alarm clock

Bell intelligent touch

Intelligent touch bell (RL, No. 2/2012, p. 46-51)

Call Svisloch

Call Trill

Call, open the door

Ringing, open the door or Electronic bell

Voice memo with motion sensor

buzzer relay

Sound LR Generator

Sound audio complex

Sound generator on chips DBL5001, DBL5002

Sound and light probe

Sound beacon… to the bike

sound probe in avometer

buzzer

buzzer for car

Bell buzzer

Sound indicator of the end of washing

Sound signaling device for exceeding the level of honey in the receiving tank during pumping

Low battery buzzer

Sound amplifier 2x20 W for buses and trucks based on the TDA7576B chip

Sound processors and decoders

Sound effects

Audible security devices

Acoustic guitar pickups

Sound engineering and sound recording

sounding cassette

Sounding keychain on one chip

Sounds... chaotic generator

ZDDU-21 century (charging and diagnostic desulfation device)

ZDDU-21vek (charging and diagnostic desulfation device)

Zigzag magnetic disk antenna

Zigzag multiband antennas

character generator

LUT callsign badge

RFP: 2=2 RFP

Vision is more valuable! Turning on an incandescent lamp with direct current

Mobile phone charger and germanium transistor to power a powerful LED

And two and three...

And yet, long-distance communication in the NE is no problem

And more about BCI and TVI…

And more about the UW3DI transceiver ...

And once again about the inclusion of a three-phase electric motor in a single-phase network

And once again about calculating the direction to the satellite

And the music will sparkle with colors. Color music on powerful network lamps

And at 144 MHz...

And on AD823AN...

And no accidents. About relay satellites

And again - about telephone servers

And again tube, single-cycle

And again about the improvements Orel-101-01 Stereo

And again about the automatic inclusion of PC speakers

Both tester and exposure meter

I.G. Freiman - pioneer of the amateur radio movement

The needle is a good tool

game running boars

Bel ring game

Game Protect the Earth-2

Game Protect the field

Subtraction

Persistent electrician game

game repel the alien attack

Playing Brain Ring

SIMUN-98 teaches to play

Toy traffic light with remote control NT1500 (set for creativity)

Two magnet toy

IR remote control toy

The ideal DC-to-AC converter

Transistor ID

Identification of strands of wire bundles and cables

SW to SW

From military - civil station

From the history of the creation of active receiving antennas

From a cable with a high p - a cable with a low p

From the experience of building TRX RA3AO

From the experience of repairing imported TV

From the operating experience of the Ocean RP-222

From fives to zeros. Refinement of CB radio stations

From the fourth grade - the fourth generation? Modernization of portable color TVs

Bending organic glass

Making ear cushions for headphones

Case manufacturing. Lightweight, durable, beautiful

Production of housings for electronic equipment from plastic

Manufacture of lamp panels

Front panel manufacturing

Panel manufacturing

Manufacturing of a printed circuit board

PCB manufacturing

Manufacturing of fuses

Production of a spiral vibrator antenna for radio communication

Production of a spiral vibrator antenna for cellular communications

Making a transformer for a voltage converter

Manufacturing of transformers

Publications from the depository fund of the Russian National Library for Radio Engineering

Changing the Directional Diagram of a Dipole System

Changes on the air

Measurement of high currents

RF voltage measurement

Measuring the output power of a low frequency amplifier

RMS voltage measurement

Capacitor measurement

Measurement of capacitance and inductance

Intermodulation distortion measurement

Measurement of the module of impedance of electrical circuits

Measurement of carrier power of transmitters

Measurement of transistor parameters

Measurement of alternating voltages with electronic voltmeters

Loss measurement in transmission lines

Measuring modes of electronic circuits

Measurement of signals and noise of radio stations Len-V

Resistance measurement with avometers

Resistance measurement of high-resistance resistors

Measurement of medium and high resistances

Measurement of thermal resistance of radiators

Current measurement in the battery compartment

Arbitrary waveform current and voltage measurement

Measurement of the characteristics of radio electronic devices

Measurements in the practice of a radio amateur

Electrolytic Capacitor ESR Meter

IMD PSK Meter on Arduino

LC Meter

RLC meter

RLC meter in... PTK

Frequency response meter with LED scale

Air humidity meter

capacitance meter

Capacitance meter - attachment to the avometer

Direct Reading Capacitance Meter

Inductance meter

Inductance and capacitance meter

Inductance meter with linear scale

Peak Meter

Power meter

Voltage, level and frequency meter

Power consumption meter on transistor optocouplers in a 220 V network

Speed ​​meter

TV signal level meter

Heart rate monitor

Electrical network frequency meter

Measuring rectifier and synchronous detector

LC Meter

We measure more precisely

Tape instead of paint

Isolated RS-232 interface

Isolation Amplifiers ANALOG DEVICES

SMPS 70 W with saturable transformer

IR repeater

IR barrier on the microcontroller

IR locator for the blind

IR illumination

IR presence sensor MA3102

TSOP1738 IR Receiver Applications

IR receiver of the remote control system for 10 outputs

Car battery simulator for testing chargers

Animal Sound Simulator (AHS)

Computer Voice Simulator

Campfire simulator

ROM simulator

Lifted handset simulator

PBX Signal Simulator

Phone line simulator

Surf noise simulator

Imitation of an apartment alarm system based on a standard unit

Imported transceivers

Pulsed seedling lighting

impulse device

Switching power supplies on the LM2577 chip

Pulse voltage converters

Switching voltage regulators

Switching voltage stabilizers (ISN), linear voltage stabilizers (LSN)

Impulse power block

Switching power supply 600 W for powerful ULF

Switching high-frequency voltage converter on the ADP2504 chip

Switching Power Supply 5V 1,2A

Switching power supply for UZCH

500W switching power supply for car amplifier

One horsepower switching power supply

Switching power supply on IC LNK562P

Switching regulated voltage stabilizer 1,2 ... 37 V / 3,0 A BM037M / NK037M

Switching stabilizer

Pulse stabilized voltage converter with numerical pulse control

IC FSK modem

IC IL135Z temperature sensor (similar to LM135Z)

AS755IPA analog timer IC

ICs of analog timers AS555N, AS556N

IC multichannel comparators AS339N, AS393 N

ICs of multichannel op-amps AS324N, AS358N

ILA3354N fluorescent lamp power supply control IC

triac inverter

voltage inverter

Reduced Power Inverter

Individual (amateur) broadcasting in Russia

Individual broadcast

PAL/SECAM indicator

Hard drive activity indicator

TV channel indicator

RF and LF voltage indicator

Output power indicator of modern UMZCH

Indicator for apartment lighting switches

Indicator for remote control

Battery indicator

Health indicator

SWR indicator

Line indicator

Voltage indicator

Vehicle voltage indicator

Battery voltage indicator

Car Low Beam Fault Indicator

Power failure indicator

Power supply disconnect indicator

Fuse blown indicator

Human experience indicator

Peak power indicator

Position indicator

Field indicator for antenna tuning

Polarity indicator

Program reception indicator in VM-12

Network failure indicator

Leak indicator with original sensor

Light pulsation indicator from electric lighting lamps

Radioactivity indicator

Radioactivity indicator on multi-section counter SVT-10

Low battery indicator

Burnt out light bulb indicator

Seconds indicator

Pseudo stereo signal indicator

Nitrate indicator

LED stereo balance indicator

Temperature indicator

Theft indicator

Water level indicator

Bass level indicator

Radioactivity level indicator

Electric field indicator

Electric field and voltage indicator with input protection

Environmental powered electric field indicator

Electromagnetic field indicator - phase indicator

Electrician indicator

Human energy indicator

indicator device

Indicators

Voltage indicators on lambda comparators

Phase indicators based on modern element base

Indication of the switched on light in utility rooms

Seconds indication

Low Loss Inductors for SH Series Switching Regulators

Inductors, chokes, transformers

Inductance in a P-loop

Inductive components on toroidal cores

Inductive sensors in the car

Incubator

Fridge incubator

Integrated circuit KR1806HM1-584

Integrated switching voltage regulators from National Semiconductor

Integrated circuits for automotive electronics

Integrated circuits manufactured by BELMIKROSISTEMA for use in automotive electronics

Integrated dialers for push-button telephones KR1008VZh10, KR1008VZh11

Integrated radio receivers. TEA5710(T)

Integrated RF Frequency Synthesizers with PLL National Semiconductor

Integrated frequency synthesizers

Integrated voltage stabilizers 78хх, 79хх, 78Lхх, 79Lхх, LMххх

Integrated circuits for telephony

Integrated circuits for controlling motors, relays, reed switches

Integrated thermal sensors and power supervisors from National Semiconductor

Integrated low frequency amplifiers

Intelligent car system

Intelligent security device Guardian BM8039 based on a cellular landline phone

Intelligent programmer

Interview with Evgeny Ivanovich Syromyatnikov, UR3QTN

Interesting historical message

Internet of Things (IoT) and plumbing

Internet radio receiver on Raspberry Pi

Interpreter for microcontroller

I2C interface on TV

Interface and ZPU for QRP-ist

Unix control interfaces. Interaction with network interfaces in Linux.

Information Security. Soldiers of the invisible front

Information Security. Everything depends on you?

Information Security. lightning protection

Information Security. Remote redundancy

Information Security. Delete the non-removable

Information space of the Sp-platform

Information shells. Historical digression and some analogies

Infrared light control system

Infrared emitting diodes

Infrared detector NM4015

Water ionizer

Ionizer

Ionizer in a car vacuum cleaner

Air ionizer for car

Ionophone

Ionophone 2.0

Ionophone on UC3845BN

Ionophone on GU-50. Version 2.0

Ionophone on K1156EU2

Parallel powered ionophone

IREN-401 - VHF prefix

ICs for secondary power supplies

IC for remote control

ICs for radios

Energy IC

hidden wiring finder

spark filter

Sparkling Christmas tree decorations on LEDs

Radio control system actuator

Using netlink to monitor and manage the Linux network subsystem

Using SketchUp to 3D Print

Using a car battery to power household devices

Using FM301 units in MW stations

Using a single level of microcircuits of the 155th series in the maximum load mode

Using imported radio elements

Using a Switching Power Supply in a Compact Transceiver

Using ESL chips as small signal amplifiers

Using a 155-series chip as a negative resistance element

Using the NM8036 as a Caller in Educational Institutions

Using a set-top box to connect a radio station to a PBX

Using remote controls for home appliances

Using an LED as an indicator and a photodetector in one circuit

Use of TVS-110 in ULPCT

Using Shadow RAM

Using a third grid in a pentode

Using AAA batteries instead of AA

Capacitor tester

Chip Health Tester

LTspice study of a secondary half-bridge power supply providing a stable 12V DC output

History of Hope

History of one object

History of one amplifier

The history of the creation of semiconductor devices

The history of a good programmer

+48 V source on voltage regulator chip

Emergency power supply

Uninterrupted power supply unit

Uninterruptible power supply with switchable output voltage

High voltage source

Power supply for car transceiver

Power supply for the device Ts20-05

Power supply for R-123

Power supply for LED illuminators

Power supply for experimenting with lamp circuits

Power supply and charger

Power supply on the L200CV chip

Power supply for amateur radio devices from a PC

Power supply with smooth voltage inversion

1 MHz conversion power supply

Power supply with adjustable output voltage 1,5 ... 15 V / 1 A, made in the form of a network adapter

TV studio power supply

Stable current source

Reference voltage sources

Power supplies

Horizons Power Sources

Power sources of Horizons. Power supply module MP-405

To the question of the gain of VHF antennas

On the issue of temperature stability of inductors

To the choice of logic elements of the CMOS structure for operation in the active mode

To the calculation of combination frequencies

K174UN19 as a drive shaft engine

Cables (acoustic, interconnect) and their effect on sound

Cable TV

Kazakh radio - 90th anniversary

How to adapt an imported phone

How do UZCH and AC interact?

How to choose a microwave transistor

How to make a cheap spectrum analyzer expensive

How a radio circle should be built in order to captivate children, adolescents and students into the most interesting world of radio engineering

How to become a telephone operator in a week: getting to know Asterisk IP-PBX

How to replace an imported chip

How CDs sound (speculation and reality)

How to use Chinese brains

How to make repairs

How to solder SMD components with solder paste

How to solder SMD chips with a leg pitch of 0,5 mm

How to convert miles to kilometers

How to improve the efficiency of the radio station

How to choose passive electronic components

How useful electronics saved my dacha

How to build a simple TV repeater

How to test a microammeter

How to check the remote control

How to check the brightness of different light bulbs

How to work with DX

How to arrange columns

How semiconductors were born

How to make a kilovoltmeter yourself

How to build a MIDI keyboard yourself

How to save battery

How to make a photocopy?

How to sketch a receipt card

How to remove insulation from winding wires

How to bend duralumin

How to Compare PLD Chips of Different Architectures

How to increase the life of the kinescope

How to improve the performance of the voltage stabilizer

How Amplifier Amplifies

How to set up your phone...

How electricity was harnessed. History of the practical use of electricity

Calendars in hours

Competition calendar

Cost Accounting Calculator MT4080

Frame for spiral resonator

VChD and VChDR frames for winding anode chokes in the MW and HF ranges

Pocket radio

Pocket charger

Pocket electronic scales - steelyard

Pocket indicator of radioactivity

Pocket tube amplifier

Pocket Minitester

Car enthusiast's pocket probe

Pocket beacon

Pocket thermometer

Pocket flashlight

Map in your mobile!

Pictures at an Exhibition or TIBO - 2005

Cascade circuit for Ural-84 transceiver

Wideband oscilloscope node cascades

Cascode antenna amplifier for television signals

Disc battery cassette

Signal processing cassette KOS-405

Reamer cassette KR-405

Cassette deck Sharp P1-31H

Cathodic corrosion protection

Quality public address system

High-quality sound: filters in the speakers

Porridge from an ax: reconstruction of the machine

KB1088EP1-xx

KB1088NR2-4

HF converters for receiving broadcast stations

HF converter

HF radio receivers: from A to Z

HF transceiver Rubin

HF power amplifier UR5YW

HF power amplifier UR5YW on a GU-81M lamp

Quasi analog thermometer on PIC16F628A and DS18B20 sensor

Quasi-electronic compass for a specific direction

quantum lanterns

Home alarm

apartment call

Quartz harmonic generators on bipolar transistors

FET Quartz Harmonic Oscillators

Crystal oscillators

Crystal oscillators on microcircuits

Quartz resonators and filters

Quartz filters

Quartz barrier self-oscillator based on push-pull amplifier

Crystal oscillator on the comparator K554CA3

Quartz local oscillator

SSB quartz filter

HF converter

Ceramic multilayer capacitors MO and MCH

Kilovoltmeter

The kinescope will last longer

The kinescope lasts longer

Cyrillic in ZX Spectrum

Keyboard EMI

Keyboard sensor - character generator

Classic TNC2 Packet Controller

Club ALFA TANGO

Club ITARS

AM transmitter key carrier forming path

K1574 Series CMOS Basic Matrix Chips

CMOS LSI 8-bit microcontroller KR1568VG1

CMOS BIS KN1015HL2

CMOS microcontrollers with built-in LCD control

Book on working with WinAVR and AVR Studio

Live LED button

Buttons, buttons, buttons...

Keypad in an old phone

Push button digital controller

Contacted me...

When a penny saves a ruble

When there's nothing to hear

When is a tester an enemy?

Codec К1582ВЖ1-0029

Microchip HCS 200/201/300/301/360 encoders

Encoding and decoding devices based on LSI from Motorola (USA)

Access code system

Combination locks

Combination locks with memory

Coded exit to intercity

Combination lock

Combination lock for telephone line

Code lock on K561IE8

Code lock on one button

Combination lock on switches

Combination lock with automatic light switch

Code lock with remote control

Combination lock with transistor key

Combination lock with one button operation

Combination lock controlled by four buttons

Something about quartz oscillators

Something about quartz resonators

Something about radios. Setting Recommendations

Something about renovation...

Something about PCB etching

Something about antennas

Vibrations... what are they made of?

Oscillatory circuits

Collective intercom

Rings for wooden handles of bench tools

Ring counters

Combined beta-gamma radiometer

Combined amateur radio instrument

Near field communication

Bathroom Fan Switch

AF amplifier input switch

Output switcher with mixing

Switch for AVU

Telephone line switch

telephone exchange

Frequency circuit switch

Switches for digital and analog signals

Switching two UHF antennas

Switching power transistors using magnetic current capture

Switched P-loop

Compact common mode chokes for single and multiple circuits, for surface mounting of the CCJ, CFJ, CMJ, COJ, CTJ, CUJ series

compact vernier

Comparator

Electronic watch compensator

Comprehensive refinement of the phone

Accelerometer Research Kit SMB380

Set of measuring low-frequency equipment

A set of measuring low-frequency equipment. Quartz calibrator. 1 kHz generator, phase meter, two-beam prefix

EKR1087 Chipset for Multi-System Decoder

Camcorder power supplies

Computer - generator

Computer BK 0010-01 and EPSON

Vector-O6C computer, printer control

Computer measures temperature

Convection electric dryer

Converter 50/28 MHz

TRAN converter

Converter for bands 13…49 meters (30…6 MHz)

Converter for cable TV

Converter for RTTY reception

Converter for receiving FM radio stations on radio receivers with VHF band 64,5 ... 73 MHz

UHF converter

27 MHz converter

Converter with internal oscillator

DRM signal converter

Converter audio channel set-top boxes from CCIR and vice versa

Converters to RV receiver

Capacitor in the socket

Capacitor instead of quenching resistor

Capacitor instead of lamp

Capacitor for direct gain receivers

Capacitors ceramic high-voltage series 2 kV...15 kV

Capacitors high-voltage ceramic type MOV and MCHV

SMD Ceramic Multilayer Capacitors GRM 21/ GRM31/GRM 32/ GRM 43/ GRM 55 Series

Capacitors ceramic multilayer for surface mounting, high voltage

Capacitors metal-film polypropylene high-frequency K78-2

Capacitors metal-film polyethylene terephthalate K73-11

Capacitors metal-film polyethylene terephthalate K73-17

Capacitors metal-film polyethylene terephthalate K73-24V

Capacitors metal-film polyethylene terephthalate K73-39

Capacitors metal-film polyethylene terephthalate K73-506

Capacitors metal-film polyethylene terephthalate K73-54

Capacitors metal-film polyethylene terephthalate interference suppression K73-43

Metal-film capacitors with a combined dielectric, with metallized plates K75-40

Trimmer capacitors analogs KT-425B/100 V

Trimmer capacitors for surface mounting TZB4, B type

Surface Mount Trimmer Capacitors TZC3

SMD Trimmer Capacitors TZY2

K10 series capacitors

Electrolytic aluminum capacitors HITANO series E5R, EBR, ELP, ELR, EMR, EMRL, ENA, ENR

Electrolytic aluminum capacitors HITANO series ECA, ECR, EHP, EHR, EHV, ELV, EMN, ENV

Electrolytic aluminum capacitors HITANO series ESG, ESX, EXR

Electrolytic tantalum capacitors of axial type K521, K521B, K521M, K521BM

Electrolytic tantalum capacitors for surface mounting

Radial electrolytic tantalum capacitors

Capacitors. Classification. Notation

Capacitors. Options

Capacitors. Color coding

Capacitors: aluminum electrolytic non-polar

Capacitors: aluminum electrolytic polar

Capacitors: high frequency

Capacitors: conventional, metallized

Capacitors: with polypropylene dielectric

Capacitors: with a dielectric made of PTFE, polycarbonate, polystyrene, paper

Capacitors: foil

Refrigerator air conditioner

Competition Smart greenhouse

Konstantin Musatov. Headphone Amplifier HA-2

Incubator Design and Incubation Tips

Design of modulators for terrestrial and cable TV

Designing modern equipment for TV broadcasting

We design a printed circuit board

Constructor 3D MC7 Prime mini

Speaker construction

contact thermometer

Container

Telephone line controller

Network leakage current controller

We control the pulse

Controller PIC16f84

RGB ribbon controller with remote control from the MP324 Master Kit module

Bipolar stepper motor controller

Controller for controlling a bipolar stepper motor

iButton access controller based on NN103 set

Power factor controller IL34262N

Packet communication controller TNC 2 Orbita-9111

Dashboard Light Controller

Printer controller for PC ZX-Spectrum

Controller with graphic LCD and real time clock

Controller with integrated half-bridge driver

Controller Samotsvet-M

LED Matrix Controller

Control controller for UMZCH

Controller for lighting mirrors, DRL and heating timer

Control of power consumption from a DC source

Monitoring the performance of car alarm key fobs

Control box 220 V

Auto electrician control

European DX Council Conference

Conference on Digital Communications

DDS synthesizer configurator via USB

Confidential Short Distance Wireless Digital Magnetic Communication

Confidential communication

Ethernet trailer without microcontroller? Easily

Dig aether with a shovel!

Carbon paper - instead of a blueprint

Smoked ham radio

Basket sensor for metal detector Koschey-5I/IM (MK8044, VM8044, VM8042 MASTER KIT)

Cell feeder

Shortwave Inverted V - television antenna

shortwave antenna

shortwave converter

Shortwave Power Amplifier

Housing - from a photobath

Case for using Li-ion batteries

microphone housing

body made of textolite

Power corrector

Ignition advance corrector

Corrector of color transitions in the MC on K174XA17

Stroke Correction with Rigidity or Monopoly on Measurement Accuracy

Space relay television

Spacecraft in orbit

Solid fuel boiler

Cat - stop

KPI with solid dielectric

KR1008VZH1 - in an imported phone

A brief description of the logical and digital circuits most commonly used by radio amateurs

Brief historical outline of the development of radio reception technology

Briefly about Spectrum-compatible

Short-term sound indicator of device activation

Fastening and more

Attaching a magnifying glass to a table lamp

Mounting the LED on the panel

Crossover

Cross-platform development in Delphi XE5. Client-server application for accessing tablet GPS sensor data from a netbook

Crack for guitar

SWR meter

SWR Meter Balance

KT829A in MP1 - MP3

KU711, KU709, KU712

Dnipro Cup 2008

Dnipro Cup 2009

Car body as an antenna

TV cooler

KUN038, UN038A, KUN048. Audio frequency amplifiers

musical chimes

KF1835VEZ - universal 16-bit microcontroller

KHA058.CHM TRACT

Whoosh, mosquito!

Laboratory power supply 1,2...37 V 0...3 A NN105

Lab UPS 120VA

AF Lab Amplifier

laser harp

laser strings

laser iron

The lamp no longer flickers

Lamp instead of a bell

mood lamp

Car interior lamp

Lamp lasts longer

Lamp radiola Ural-114

144/14 MHz tube transceiver

Low Voltage Lamp Generators

Lamp super-regenerators with low voltage supply

Lamp Dummy Loads

Tube vinyl proofreader Puzanova V.V.

Tube push-pull stereo ULF

Non-traditional powered tube push-pull amplifier

Lamp UMZCH for 25 W

Low-Voltage RF Tube Amplifier

Tube Recording Amplifier

Light bulb on the dark side of the axioms of electrical engineering

Refrigerator light comes on slowly

Daylight lamps burn for a long time

Incandescent lamps last a long time

LED lamps BM6031 150 lumens and BM6032 300 lumens MASTER KIT

LASPI TT-01 checks transistors

LDS shines normally

Legendary QUAD 405

Legendary T-2 Leningrad

Simply and easily

Easily recognizable alarm

Easily recognizable signaling device (RL, No. 4/2012, p. 38-40)

Len-V - radiotelephone

Tape tweeters

The tape is ironed ... a soldering iron

Staircase quartz filters

Ladder filters on unequal resonators

Summer is a whole propeller ...

Therapeutic kilovolts. Electric shock therapy

Circuit board treatment

We treat capacitors

We treat ourselves. Acupuncture Therapy

We are treated ... with music

Heals… color

Limiter

Lemon Transmitter. The story continues...

Lemon transmitter: and on bipolar...

Frequency division ruler for polyphonic EMP

STOP bar and turn indicator

UMZCH D-class line in a unified form factor "MASTER KIT"

Linear low resistance meter

Linear amplifier

Linear power amplifier

Flipping through the pages of foreign magazines

dust trap

Single pulse trap

Logarithmic units

Logic IS KMDP type 74NS, 74NST

Logic IS KMDP type CD 4000

Logic ICs TTLSH type LS

Logic ICs TTLSH type S

IN74HC/HCT series CMOS logic ICs

Logic Matrices and Basic Matrix Crystals

Logical gates XOR

Logic probe

Logic probe Eugene

Logic probe with generator

Logic probe with digital and audible indication

Logic Tester

Log-periodic UHF antenna

log-periodic effective

Local heater

Braid tinning

PCB tinning

A ray of light on the dark side of the axioms of electrical engineering

Better less (efficiency), but better ...

Beloved house is getting smarter before our eyes

Amateur SSTV camera

Amateur cable network

Amateur multi-channel video surveillance system

Amateur video surveillance system v 2.0

Amateur FM and SSB radio station in the range 144-146 MHz for mobile communications

Amateur EATS SalTel 20

Amateur analog OPS devices

Amateur cable networks

Amateur repeaters of Transcarpathia

Amateur light meter

Amateur software package for working with telephone signals

For lovers of powerful ULF

Fluorescent lamp from junk parts

Fluorescent lamp for 110 V burns from 220 V

Chandelier Chizhevsky

Chandelier Chizhevsky on horizontal scan TV

Trunk amplifier for cable TV

main power amplifier

Magic LEDs

magic flower

Magnetic - transistor generators (blocking - generators)

A magnetic field

Magnetic alloys and magnetic cores GAMMAMET 411, 440C1, 501

Magnetic dollar

Radio Sharp GF-8989Z

Radio Sharp WF-950HT

Radio tape recorder M-962

Radio MK 2500 (RP)

Magnetically controlled integrated circuit K1116KP1

Magnetically controlled integrated circuit K1116KP10

Magnetically controlled integrated circuit K1116KP11

Magnetically controlled integrated circuit K1116KP12-2

Magnetically controlled integrated circuit K1116KP13

Magnetically controlled integrated circuit K1116KP14

Magnetically controlled integrated circuit K1116KP2

Magnetically controlled integrated circuit K1116KP3

Magnetically controlled integrated circuit K1116KP4

Magnetically controlled integrated circuit K1116KP5

Magnetically controlled integrated circuit K1116KP6

Magnetically controlled integrated circuit K1116KP7

Magnetically controlled integrated circuit K1116KP8

Magnetically controlled integrated circuit K1116KP9

Magnetically controlled integrated circuit MOS IC K1

Magnetically controlled integrated circuit OGU

Magnetically controlled integrated circuit type PMP

Tape recorder Astra-2

Tape recorder Belarus M310-S

Tape recorder Dnepr-10

Vilnale tape recorder

Tape amplifier

Tape recorder LOTA MP-203S

Modeling without a soldering iron

Bread board

Development Board AVR-USB-MEGA16

stripboard development board

Development boards for lamp UMZCH

Maximum efficiency in boost converters

Little DX Tricks

Little tricks

Little tricks for fans of long-range reception

Little tricks and entertaining facts from a practicing radio amateur

Little tricks of inductance

Little fixing tricks

Little tricks when repairing antennas

Little radio amateur tricks

Small size MW antenna

Small-sized block siren with increased efficiency

Small-sized open speaker with adjustable frequency response

Small-sized transceiver antenna of the 27 MHz band

small radio station

Small size 27 MHz loop antenna

Small-sized high-power FM station

Small-sized antennas for portable MW communication stations

Small DC Relays

Small-sized electronic clock on LCD with a calendar and an alarm clock

Small-sized power supply from the network adapter BP2-3

Small size network

small watchman

Small VHF receiver

Small VHF receiver

Small Digital Frequency Counter

Low Power Voltage Stabilizers

Low Power Voltage Regulators IL2931

Low power laboratory power supply

Low power 2m beacon transmitter

Low power FM transmitter

Quiet personal computer with a single fan

Low noise GaAs (FET and HEMT) transistors

Low Noise Converters - LNB

Low noise antenna amplifier

Low noise amplifier at 144/430 MHz

Manipulator - impromptu

Automatic telegraph key manipulator

Fox call sign manipulator on ROM

Manipulators (call sign sensors) for training foxes

Manometric multichannel computerized gas analyzer (MMCG) ALLA

M-antenna

Marking low power transistors

Math for Losers

Antenna material

Matrix illumination garland MIG-95

MAX1553/MAX1554, MAX1573, MAX1582

Lighthouse

MVP with an increased number of switched channels

Megaphone

Media center on Raspberry Pi

Medical thermometer based on M830V multimeter

King Charlie Bravo International Club

International Amateur Radio Festival Domodedovo-2012

melodic call

Melodious call from a wristwatch

Radio engineering trivia

Metal detector

Metal detector for a car enthusiast

Metal detector in half an hour

Metal detector on accessible parts

Metal detector based on the principle of a frequency meter

Metals against the flu

Weather satellites for radio amateurs

Transceiver Transceiver Switching Time Measurement Method

Voltage measurement method

PCB Drawing Method

Zero string method - new features

Method for drawing the topology of printed circuit boards

Hybrid cascade tuning technique

Technique for accurate measurement of SWR

Methodical example of converting 40 MHz to 24 MHz on an FPGA

Methods for improving the characteristics of PRPU R-399A, R-381

Metrological characteristics of measuring instruments

Flasher for brake lights

Flasher with LEDs

Flasher with touch control

Flasher with touch control (RL, No. 1/2012, p. 40-44)

Flashing red light

Flashing light in a car

Flashing LED indicator

Micro-ATS

Micro-ATS 1/3

Micro PBX 1x2 with call forwarding

Microwave TV distribution systems

Microcontroller ATMEGA128

Microcontroller for remote controls

Mouse microcontroller

Microcontroller NT8020

Microcontroller blocks Master Kit for technical creativity and professional use (a series of articles)

Microcontroller constructor

Microcontroller programmable pulse counter MPSI-1

Microcontroller programmable timer-thermostat MPTT-1

Microcontroller programmable thermostat MPTR-1

Microcontrollers

Philips 8XC552/562 microcontrollers

Microcontrollers

Atmel AVR microcontrollers, where to start?

Microcontrollers MCS-48, MCS-51

MCS-51 microcontrollers with FLASH memory from ATMEL

Mitsubishi microcontrollers

Microcontrollers Z86E04, Z86E08

Microcontrollers and their application (on the example of KR1878BE1)

Microcontrollers and memory ATMEL

Microcontrollers and Microchip Memory

DALLAS microcontrollers

Microcontrollers from ZILOG

Microbeacon on PIC16F630

Micropower Voltage Regulators LP2950 Z5 (1187EH1)

Micro power optical power supply

micro power network

IL1776C Micro Power Programmable Operational Amplifier

VHF-FM microtransmitters

Micropower magnetic field sensor

Microprocessor SDU

Microprocessor Plant Impedance Analyzer (RUSLAN)

Microprocessor voltmeter-tachometer

Microsauna in the apartment

Micro assemblies of transformerless AC/DC converters Rohm

Chip IL494

Chip INF8574AN

Chip IZ5732 and its application

Microcircuit VP004A for controlling LCD indicators

Microcircuit for controlling a radio station in the 27 MHz band

Chip K1004HL45 and its application

Chip KF1869BE1

Chip single-chip television receiver

IZ317 adjustable voltage regulator microcircuit

IC tone call IL2418N

Switching regulator control chip

Chip electronic thermometer VT8016 and its application

The chip can be saved

Chips Dual Port RAM

EEPROM chips

EPROM chips

Chips FIFO

Flash EPROM chips

INTEL FLASH memory chips

VRAM chips

Addressable transmitter and receiver microcircuits for remote control of security systems

Dynamic RAM chips

Microcircuits for mains voltage control

CMOS ICs

AMD memory chips

Microcircuits of the KR1008 series

Microcircuits of the KR1180 series

Microcircuits of high-current optoelectronic relays

Static RAM chips

TTL ICs

Microboard + horn

Microtableau F340A

Micro faradometer on PIC16F873A

DIY microphone

Microphone and radio microphone adaptation of musical instruments

Microphone preamp

microphone amplifier

High sensitivity microphone amplifier

Microphone amplifier for electret microphones

Microphone Amplifier Beekeeper

Microphone amplifier-compressor for VHF FM transmitter

Micro color music

Mixer

Millivoltmeter

Mini HASP key from any USB device

Mini HD player Google Smart TV c Android. From personal experience... or tracking international parcels

Mini anti-migraine Northern Lights

Mini PBX 1/7

Miniature directional antenna for the range 144-146 MHz

Miniature security device NS177

Miniature device for checking the integrity of electrical connections of printed circuit boards containing integrated circuits

Miniature FM receivers

Miniature and subminiature incandescent lamps

Miniature Low Flow Toroidal Inductors

Miniature radio modules for the transmission of digital information

Miniature AM transceiver at 27 MHz

miniature generator

Miniature Dual Range Voltmeter

Miniature dual-channel power supply

Miniature switching voltage regulator

Miniature radiation indicator

Miniature human body temperature indicator

Miniature logic probe

miniature receiver

Miniature Low Power Receiver

Miniature radio microphone

Miniature radiotelephone

Miniature universal ham radio probe

Miniature, built-in voltmeter with animated LED indicator MP503

Mini drill

Mini drill with abrasive wheel

Minimalist anodizing of aluminum and alloys. Technology, materials and equipment

Mini VHF FM Transmitter

mini radiator

Ministand for desoldering connectors

Minitester

Mini screen for color music

mini electric guitar

Minsk intercom

Myostimulator

Radio World: Ending the Year

Peace blow of Stalin (Soviet radio receiver Mir)

Missionaries on the Air

Mikhail Baranochnikov. A simple probe for checking pn - junctions

MK for beginners

ISS. Online broadcast or ... Radio and video to your site

MLT and LM317 in tube amplifiers

Polyphonic EMP from illiquid assets

Polyphonic EMP

Polyphonic EMP from illiquid assets

A polyphonic EMR from illiquid assets. Modernization

A polyphonic EMI. POLYFON-ROM with unison sound

Multi-band antenna

Multi-band antenna with switchable polarization

Multi-band antennas using an open feeder

Multiband dipole for WARC bands

Multi-Range Constant RBX Meter

Multi-Range Timer

Multi-channel remote control system, or do-it-yourself smart home

Multichannel intercoms

Multi-channel tuner

Multi-quartz Super-VXO: a new kind of frequency synthesizer

multi-position switch

Multi-band filterless equalizer

Multirange voltmeter with linear scale

Multi-program color and music installation

Multi-resonance circuit and antenna relay based on it

Multigrid Vacuum Tubes

Multipoint thermometer

Multifunctional alarm

Multifunctional dynamic brake light device for PIC16F628A

Multifunction device for car

Multifunction AC wattmeter with galvanic isolation

Multifunctional bell Svisloch-2

Multifunction controller for interior lighting and automatic daytime running lights

Multifunctional light controller in the car interior with light and music neon

Multifunction timer

Multifunctional universal programmer - 2

Multifunctional frequency counter on the microcontroller PIC16F873A (v.3.0)

Multifunctional frequency counter on the PIC18F252-I/SP microcontroller (v.4.0)

Mobile Phone Code Directory

Modeling in LTspice a half-bridge power supply with active power factor correction, providing a stabilized 24 V DC output voltage at a load current of up to 10 A

Modeling the operation of a superregenerator on a tunnel diode in MATLAB

Simulation of three multistage amplifiers operating in the VHF and UHF bands

Automatic traffic light model

modem for package

Modem for frequency-shift keyed signals

Sony PlayStation upgrade

Modernization of car radio station for personal radio communication

Modernization of the author's wattmeter on the ADE7756 chip

RA6AA Antenna Upgrade

Modernization of bicycle electrical equipment

Modernization of the rotation sensor Electronics VM-12

Modernization of the Double Square

Modernization of antediluvian oscilloscopes

Modernization of the ZUBR ZDA-14.4-K(N) screwdriver charger

TV sound upgrade

Modernization of imported transceivers

Modernization of the power supply KV-24M

Modernization of the P-loop

Modernization of simple tube radios

UW4HW antenna counterweight upgrade

Upgrading the firmware of the LED sign-synthesizing display

Remote control upgrade

Modernization of the r / station for personal use

Modernization of R339A into a transceiver

Modernization of ALAN radio stations

Modernization of radio station ALAN-100 PLUS

Modernization of the radio station Grodno-R

Modernization of the R-105M radio station

Modernization of the washing machine Vyatka-automatic

TA modernization

Modernization of television antennas of the decimeter range. Reception of TV programs with a strong re-reflected signal

Modernization of Horizon 3, 4th generation TVs

Modernization of telephone sets

Modernization of telephone sets with caller ID

RA3AAE Transceiver Upgrade

UA1FA Transceiver Upgrade

Modernization of the EFIR-M transceiver

Modernization of the digital frequency counter

Modernization of the digital scale

FM Transceiver Upgrade

Modernization of loop sensors

Modernization of the electronic ignition unit

Modernized power amplifier VEBR UM-40/8-10M

Upgrading UA1FA

Modification of Panasonic character generators

Modification of the multi-range G5RV

Modification of the network vibration probe

Program selection modules

LS40-EB LocSense module

Program selection module

Display module for microcontrollers

Modulator

Modulation

OFDM modulation in radio communication

We can measure more

Moidodyr for cell phone

Washing

Lamp TV monitor

Installation of double-sided boards in amateur radio conditions

Mounting and new design for some microcircuits in round glass-to-metal cases

Circuit board for digital circuits

Mounting clips for sheet metal boards

Mounting clamp

Installer's handset

MOS floating gate technology

MOSFETs in a switching power supply

Bridge circuit on TDA2005

Bridge amplifier and op-amp subtractor

Powerful N-channel FETs

Powerful bipolar Darlington transistors

Powerful vertical N-channel MOS transistors KP742

Powerful vertical N-channel MOS transistors KP744

Powerful vertical N-channel MOS transistors KP746A…G

Powerful vertical N-channel MOS transistors KP753A…V

Powerful internally matched GaAs FETs

Powerful rectifier-limiting diodes KD2972

Powerful diodes KD643 AS...VS

Powerful diodes with Schottky barrier KD2907A…V

Powerful diodes with a common anode KD642AS

Powerful audio frequency ICs

Power MOSFETs KP737A…B

Power MOSFETs KP750

Power MOSFETs KP775A…B

Powerful field effect transistors

Powerful field-effect transistors KP741A ... B

Powerful P-channel MOSFETs IRF9540, IRF9Z34

Powerful microwave silicon transistors

Powerful stabilizers (normalizers) of mains voltage

Powerful Voltage Stabilizers

Powerful transistors KT8229A, KT8230A

Powerful broadband GaAs FETs

Powerful car UMZCH with a subwoofer

Powerful vertical N-channel MOS transistor KP771A

Powerful Driver

Powerful voltage inverter

Powerful crystal oscillator

Powerful laboratory power supply

Powerful MOSFET KP778A

Powerful MOS transistor KP780 A-B

Powerful musical car and bike signal Sigma-94 stereo

Powerful field effect transistor KP786A

Powerful voltage converter

Powerful Regulator

Powerful mains voltage stabilizer using electromagnetic relays

Powerful VLF class D 140 W or 2x80 W

My history of amateur radio

My new 145,5 MHz dacha antenna

Bicycle MP3 Player MT6090

МТ1011 - Pen massager

МТ9000 - Wireless apartment SMS alarm system

MTX90 instead of a call

Music in the wall: built-in MP3 player MP2603DI

Music in numbers

Short wave music

Music terms

Music keychain

Musical answering keychain

Musical alarm clock

Music call

Music player-voice recorder

Music touch call

Musical alarm clock

Multivibrator on TL431

Multivibrator on powerful field-effect transistors

Multivibrator on optocouplers

Multivibrator with one timing capacitor

Multivibrators

Multimeter based on UOC

Multimeter with magnetic mount (suspension)

Multiplex communication system

Mouse: Eliminate double-click effect

Soft start DC starter motor

on a half-wave rectifier

On the dashboard

For different voices

Observer with license to transmit

Master Kit BM2043: application in practice

Sets for New Year's Eve

Sets for beginner telegraphers

Visual accessories

Reliable call activation

A reliable way to dismantle electrical circuits

Tired of drums - turn on UMZCH with an expander

The most popular microcontrollers from various families

QSL card stickers

Energy storage to power cameras

Adjustment of circuits with UMS

Setting up a broadband power amplifier

Winding without lambs

Winding noise-proof pickups

winding pencil

Winding machine with digital electronic counter

DIY winding machine

Drawing a pattern on several identical printed circuit boards

Drawing on a printed circuit board

Reminder with motion sensor MT1035

Directional antenna for MW

7 MHz directional antenna

Voltage and plugs of the countries of the world

Voltage and charge - under control!

Nozzle for microdrill. Technology Tips

Table lamp

Setting up caller ID based on Z80

Setting up caller ID based on the Z80 processor

Resonance tuning. Broadband voltmeter

Setting up CB antennas with an SWR meter

Setting up the FSS using X1-7B

Came ... the light came on. Lighting machine in the hallway

Beginning of sunset BBC

Do not throw away the device from Hong Kong ... Repair of the dialer of an imported telephone set

Don't throw away your old watch

Don't throw away the transformer

If you don't know Ohm's law, stay at home!

Do not look for Bella among the Pines, but take a soldering iron...

Not Clifford, but... A car security device

We do not spoil the nerves for ourselves and the employees of the automatic telephone exchange. Caller ID modernization

Invisible light, inaudible sound

Unwanted transmitter oscillations and measures to combat them

Non-invasive blood glucose monitor

Troubleshooting microprocessor

PANTERA radiotelephone malfunctions

Neutralization of the input capacitance of the differential stage

Some options for enabling contactless electronic keys

Some data on microcontrollers of the PICxxx and Atmel PICxxx family

Some abbreviations used in electronics and electrical engineering

Illiquid assets - in life

A little about the Knights

A little about the detector

A little about replacing radio components

A little about charging NiMH and NiCd batteries

A little about the technology of the Laser iron and OrCAD

Undeclared war on the air

Unusual LED Profession

Unusual inclusion of a diode optocoupler

Unusual use of the 1014KT1 key

Unusual application of the K176LE5 chip

Fancy watch

Unusual soil dryness sensor

Unusual phone call

Unusual combination lock

Unusual light and sound signaling device

Neon lights

Unrecognized radio of an unrecognized state

Fireproof voltmeter

A few simple circuits of harmonic distortion meters

A few words about the PS-20R power supply

A few words about the electronic compass

A few subtleties of working with a threaded rivet

Uncomplicated Primary Hours

Simple ULF class D

Inaudible sounds

Non-standard inclusion of microphones MKE-3

Non-standard Wi-Fi hotspot power supply

Non-standard behavior of inductors when heated

Non-standard chemical current sources

Atypical reception of distant stations

Netherlands - mills, tulips, cheese and radio ...

Bottom heater for BGA soldering using Tornado infrared heater as an example

Low voltage LED power supply with ZXSC300

Low Voltage Voltage Stabilizers

Low voltage thyristors in a string switch

Low voltage uninterruptible power supply - battery charger

Low voltage voltage converter

Low voltage radio microphone

Low Voltage Stabilizer

Low-voltage voltage stabilizer to power a mobile phone from an external source

Low-impedance microphone in the UW3DI transceiver

Low frequency crystal oscillator

Low pass tunable notch filter

Low frequency sine wave generator

Low Frequency Digital Frequency Counter

Nickel plating without current

Nickel-cadmium batteries with high discharge currents

Nikolay Ivashin. Resonance and Nikola Tesla (bifilar coil)

Nichrome cake in a soldering iron

New version of smart programmer

New life for tube R.A.

New life for a soldering iron

New life of the phase method

New concept of pulse metal detectors

New topology for powerful UMZCH

Latest 16-bit M16C microcontrollers

Christmas garlands

Christmas toys

Christmas gifts

New Year's souvenir

Christmas tree

New in the charge of energy storage devices

New in amateur speakers

New sound of the music center

New about switching modes in a Panasonic phone

The next generation of Intel Centrino

Broadcast band news

Broadcast news

Broadcast band news

Air news

New types of radio communications

New Features ALAN 95+

New features of Butterfly Antenna

New features of Ishim-003

New Samsung Remote Features

New instrumentation

New powerful ULF Hi-Fi class from MASTER KIT

New MASTER KIT kits for personal computer

New platforms from Intel

New Families of ALTERA Programmable Logic Chips

New ways of magnetic sound recording

New low-frequency Hi-Fi amplifiers

New AVR programmer with ISP function MP9011

New version of hidden wiring finder

New pulse converter

A new method for calculating transformers

New project Smart Home on Android for a reasonable price

New mode of operation of the plafond

New satellite TV channel

New old intercom

The new plinth will relieve stress

Dialer+electronics

Normalization amplifier

Current load standards for wires

MW-band portable station

Nostalgic round scale

Nostalgia for simple low-power voltage regulators of the 1970-80s. with short circuit protection

Know-how for EU-1841

Night lights with LiIon and LiPol batteries

Do I need an RF in the receiver of the transceiver?

Are fuses necessary?

LF generator

About TVI. Connecting Polish antennas

About the possibility of modeling the super-regenerative mode in EWB-5

On the Possibilities of Broadband Ultra-Dynamic Amplifiers

About restoring sound in ZUSCT TVs

About the restoration of the kinescope with constant heat

About time delays in power amplifiers

About the benefits of using LED lamps

About the alignment and characteristics of the ULF transceiver

About the band 18.068...18.168 MHz

About replacing quartz in PC Spectrum

About sound quality on CDs

About KBV zigzag antenna

About the design of the radio station TRAN - T + R

About monitoring the power consumption from a DC source

About the lampization of the sound of household equipment

About a beam of light in the dark theory of the electromagnetic field

About people walking out of step

About the little known

About some shading in the heads

About some versions of server phones with caller ID

On some laws of recalculation of the parameters of inductors

On some features of the operation of amateur HF antennas

About some features of etching of printed circuit boards in a solution of copper sulphate

On some properties of simple chaotic self-oscillators

About parallel connection of transformer windings

On the first law of the electric circuit

About the suppression of the mirror channel

About the selection of thyristors KU221A

About receiving DRM broadcasts

About the application of BM8039 Guardian unit

About the practical application of the BM8039 Guardian kit

About conducting QSO through the amateur radio satellite RS-12

About extending the life of the kinescope

About r/station Elektronika I-PPB-60

About the operation of a quartz oscillator at non-standard frequencies

About the operation of a three-phase electric motor in a single-phase network

About the operation of VHF-FM stations in duplex mode

About Turkish Regional Broadcasting

About Repairing Power Modules

About the repair of radio-electronic equipment

About the compatibility of the MP2897 Embedded Multimedia Module with various audio amplifiers

About GPA frequency stabilization

About Dawn-307-1 TV

About the technology of single / small-scale production of printed circuit boards

About PCB etching

About board etching

About frequencies, agreements and collisions

What the AC case is silent about

About the LONG WIRE antenna

About the Double Triangle Antenna

About the T2FD Antenna

About caller ID servers and electronic telephone sets

On the use of small-sized transformers with a power supply frequency of 400 Hz. Voltage transformer

About the use of old generator radio tubes

About one history of building a timer on the K561TM2 chip

On the features of single and small-scale production of winding products and assemblies

On improving the sound quality of Vityaz TVs

About Troubleshooting Common Problems in BEIJNG TVs (model 8303PS-47 cm)

About electric current in vacuum and vacuum diodes

Overview of information sources on amateur radio topics

Overview of modems (PSK, FSK, GMSK, FFSK, 4LFSK)

Overview of new software versions of phones with caller ID

Overview of amateur radio software

Overview of recommendations for setting up and improving the work of caller ID

Updating your software from the Internet without programming

Designations of integrated circuits according to the Pro Electron system

Justification of the method for calculating the equivalent parameters of a quartz resonator

Signal processing of balancing machine sensors

±ndB reversible level controls

Feedback is interference?

Flyback power supply up to 100 W with a wide range of mains voltage

Flyback converter on TNY268

Reverse Doppler - what is it?

Turning LEDs for the transceiver

Toilet arrangement. Lighting machine for cats

Educational touch stand

The general device of the microcontroller KR1878BE1

Communication of fans of broadcasting reception

Consumer power limitation - overload protection

Multimeter Time Limiters

Limiter 10 minutes

Time limiter

Maximum supply voltage limiter for low-voltage equipment

Open circuit voltage limiter of the welding machine

Eleven-lamp radiogram Friendship

Single transformers for S-interface

One button for lock and call

Single vibrators (waiting multivibrators)

Single-channel dimmer: circuitry and programming of AC voltage phase control devices

Unisonic One Button Accordion

Single-chip microcomputer EKR/KR1830BE31, EKR/KR1830BE51

Single-chip microcomputers of the MCS-96 family from INTEL

Single Chip AC/DC Converter with PFM

Single-chip electricity meter 71M6511

Single-chip emulator for debugging encodings ROM microcomputer KR (EKR) 1830BE51

Half wave memory

Single pole plug made of rod

Single ended voltage converters

Single-cycle switching power supply with bipolar output voltage 45 + 45 V and power up to 200 W

Single ended tube

Single-ended tube amplifier Komod for 6C33C

Single-ended tube amplifier for 6G2 and 6P6S

Single-cycle ULF on radio tubes

Single-ended amplifier on a 6P45S lamp

Single transistor lightning

Single transistor hidden wire detector

Let's revive the power supply

Revitalizing tap water

We revive contacts

Animated sound

Air revitalizer - washing RPZU

Ozone or ions?

Barrier Type Ozonator

Ozonizer based on voltage converter

Ozone technologies - for radio amateurs

PC amplifier

Final amplifier for a walking tape recorder

Wire coloring

Octane corrector on CMOS chips

Do-it-yourself online TV player ...

Operational soldering iron switch

Operating system SR/M-80 for personal radio amateur computer Orion-128

Operating schemes

Operational amplifier IL9002N, IL9002AN

The operational amplifier is used ... like a rake

Heart surgery

Description and repair of the KR-405 reamer cassette

Determination of E foil material

Determination of the number of turns of the transformer windings

Substance Identifier

DTMF standard number identifier

FSK number qualifier

Determinant of ratings of foreign resistors

We determine the pinout

Optimal filtering, demodulation and recognition of one-dimensional signals hidden in white noise using convolution transformation, invariant and Kotelnikov formula

PSU mode optimization

Optimization of the BP mode (RL, No. 3/2015, p. 38-40)

Optically controlled CMOS switch

Optical transmission lines

Optical active infrared sensor

Optical parking sensors for children's car

Optical receiver with LED

Optocouplers in 6-pin package

Optocouplers in 8-pin package

Optocouplers in plastic DIP packages

Optocouplers with logic output

Optoelectronics

Optoelectronic MOS relays, low power

Medium Power Optoelectronic MOS Relays

Optoelectronic relays

AC optoelectronic relays

Optoelectronic relays, K294 series

Optoelectronic Solid State Relays

Optoelectronic generator

Experience in implementing EMOS by displacement

Operating experience of radio stations of low-level VHF-FM communications

Orbits of artificial earth satellites

Organization of two channels of sound

Organization of information exchange via IR channel

Organization of a radio/Internet gateway based on… Baofeng UV-5R and VoIP service

Original power indicator

Original identification signal for CB transceivers

Orientation of the antenna to the satellite according to the graphs

Approximate calculation of the capacitive rectifier

Orion-128. PRINT MASTER

Mastering programmable logic matrices from ALTERA

Lighting and illumination

Car interior lighting

Autumn IDFification 2005

HF transceiver main board

Basic data of the radio amateur satellite Radio-M-1

Basic logical operations and their implementation

The main parameters of foreign transistors. Series 2N

The main parameters of foreign transistors. Series 2SA

The main parameters of foreign transistors. Series 2SB

The main parameters of foreign transistors. Series 2SB

The main parameters of magnetically controlled microcircuits of the USSR

The main parameters of satellite television systems by SATSOM

Basic parameters of digital logic circuits

Main characteristics and parameters of the S1-65 oscilloscope

The main electrical characteristics of receiving television antennas and requirements for them

Features of individual reception of TV programs with NICAM stereo sound

Features of mounting microwave connectors for satellite communication devices C and X range

Peculiarities of National DXing in Summer

Features of optimizing the heterodyne voltage of double balanced mixers

Features of building UMZCH classes G, super-G from Philips and power supplies for them

Features of the use of combined humidity-temperature meters

Features of designing attenuators KB equipment

Features of working with motion sensors

Features of the synthesis of circuits of barrier quartz self-oscillators

Caution: medical devices for individual use!

Oscilloscope + table = frequency

Oscilloscope measurements of signal parameters

Oscilloscope probe

Oscillography of complex signals

From the telegraph to the Internet. The history of the formation of digital telecommunications

Answers to questions from users of AON-servers

Shutting off the battery when discharging

Muting audio sources on a phone call

Turning off the TV at the end of TV shows

Where did the curb in the Spectrum computer come from

Rodent repeller

Mole repeller on an old relay and converter from a car memory

Rat Repeller

Mice repeller

floating supply op amp

Cooler for ... refrigerator

fox hunting

Entrance door security

Security with a radio station

Security GSM alarm

Security GSM-alarm system for home, cottage, garage

Security car radio alarm

Security radio alarm

Охранная сигнализация

Car security alarm

Motorcycle burglar alarm

Security alarm system based on Len-V radio station

Burglar alarm with radio control

Security system

Security system - telephone

Security system ALARMPIC

Security system of apartments

Infrared security system

Security intercom

security device

Car security device

Security device for a motorcycle on digital circuits

Security device Modus-NR

Security device on the subscriber loudspeaker

IR security device

Cell phone based security device

Security device with electronic key

Security and fire alarm

Security sensor alarm

Security devices

Security devices on CMOS chips

security alarm

Security timer for phones with caller ID

Generator quality assessment

Very important formula

Cleaning boards from zapon varnish with foam rubber

Shooting star

falling drop

Soldering of aluminum and its alloys

Soldering Lamp Panels

Package and ZX Spectrum

Package for ZX SPECTRUM

A package of calculation programs for radio amateurs

Packet FFSK modem (rev.2.0)

Wand with a riddle

Palma - all-wave radio receiver

Control panel and diagnostics of signal lamps on vehicles

Sockets for generator lamps GU-74

Panoramic spectrum analyzer based on RTL_POWER and DVB tuner for 9 bucks

Panoramic spectrum analyzer with direct access to the RTL-SDR chip

A few words about the tube amplifier

A few words about the six-pe-three

Parabolic Antenna for EME

Parabolic antennas for STV

Parallel connection of resistors

Parallel stabilizers on microcircuits of the 155th series

Parallel display of graphic information

Parameters of modern foreign transistors

ULF parameters ... according to the table

Natural gas steam generator

Stepchildren of the Russian state air

pattern tremolo

Soldering station on ATtiny24

Soldering iron from a nail

Soldering iron won't overheat

Impromptu soldering iron

Pedal to control the transmit-receive mode of the transceiver and (or) power amplifier

Pedal synthesizer

First program for ATMEGA128

First program for ATTINY15

The first program for ATMEGA126

The first program for the microcontroller

The first local oscillator of the transceiver

First radio receiver

First time in QRPP class

Morse code translator (decoder)

Intercom

Intercom on the network 220 V

Intercom with automatic call

Intercom with voice control

Intercom with power control

Intercom, add-on

Transmitter - toy

Wireless Video Program Transmitter

Video transmitter

Video signal transmitter to TV receiver

Infrared sound transmitter and receiver

Radio transmitter for personal radio communication

FM Transmitter

Toy transmitter

Information transmission by means of noise-like signals

Infrared SPDIF Signal Transmission

Transmitting magnetic antenna for LW and MW

Alteration of the power supply TST12-5

Alteration of the KV-3 and KV-4 bands in the Ishim-003 radio receiver

Alteration of the Kedr-auto charger

Quartz watch rework

Alteration of a computer power supply for a charger. Everything in order

Alteration of a computer power supply for a bass amplifier

Alteration of handset

Alteration of the H-313 radio amateur oscilloscope for visual control of fine tuning to the RTTY signal

Alteration of the Wave-K receiver

Alteration of the R399A receiver into a transceiver

Alteration of R-390-1

Alteration of the LEN-V radio station at 27 MHz

Alteration of the LEN-M radio station at 29 MHz - FM

Alteration of RPU type GUYS - R-697 into transceiver mode

Alteration of the synthesizer r / st. Beacon per 1 kHz step

Alteration of the thermal relay of the washing machine Vyatka-automatic

UHF conversion to UW3DI

Alteration of instrument scales

Alterations of the TV Horizon-61ТЦ411

Switchable Delta Loop for 40 meters

Switched coil for P-loop PA

Switched Rectifier Transformer (PETRA)

Portable Radio Output Switch

Garland switch

Range switch

Christmas tree switch

Receive-transmit switch with 60 dB isolation

Switching modes in a portable radio station Veda FM using a pedal

Variable resistors

Variable resistors with logarithmic and exponential dependences of resistances

Alternating current - good or bad?

Portable radio station in the range 144-146 MHz

Portable receiver R-311

Portable electric guitar amplifier

Portable digital frequency counter

Crossing borders with the name of Christ

Tunable circuit for driver stage

Tunable notch filter

Rebuilding the Iren receiver to the upper VHF range

Rebuilding the VHF band

Film reshoot - video

Adapter for transistors to a multimeter

I go to reception

Personal computer in amateur radio practice

Printed circuit board? It's very simple

PCB… by string

Circuit board... with a syringe!

Printed circuit boards of the radio receiver TEST

PCB cutter

Protractor Seal

Piano

Non-interference PID thermostat

Tweezers-lever

Pirate broadcasting

Fan power supply 12 V from 220 V network

LCD TV power supply

Power supply of the grounding meter M416

Powering the computer from the vehicle's on-board network

Supplying low-power loads from the network

Multiband Windom powered by coaxial cable

Power supply of the digital ammeter module

kinescope filament power supply

Powered by an unstable network

Loop Vibrator Power

Power supply of radio equipment from the on-board network of the car

They write one...

Smooth adjustment of the heater motor speed in a VAZ-2105 car

Smooth turning on the kinescope filament

Smooth heating of the kinescope

Plagiarism as a means of unearned income

Plugin for scoring the system time or... Call any DLL without programming

Skype call pause plugin for AIMP

PCB drawing tablet

Prototyping board

Portable radio board

Amplifier board on IC LM386-1 with a gain of 74 dB

Player from available parts

FPGA - new element base

FPGA. Part 1. Remote flasher over TCP / IP network

FPGA. Part 2: Pseudo-UART Implementation

FPGA. Part 3 or... Digital filtering. Smoothing and fight against impulse noise

FPGA. Part 4 or... Codogram shaper. Implementation of receiving in synchronous and asynchronous modes

FPGA. Part 5 or... Pseudorandom Sequence Shaper

FPGA. Part 6 or... FKM radio pulse shaper (Barker)

FPGA. Part 7 or... Link Port to RS-422 Interface Converter

Flat vibrators for TV

On the other side of the diffuser

Surface effects in winding wires at high frequency and their control

Surface mounting: components, technology, repair

Swivel antenna with bottom drive

Swivel panel TV wall mount

Swivel wall mount for panel TV. Modernization

Rotary device of the combined wave channel for 10 and 15 meters

Turns and handbrake - under control!

Power repeater

Increasing the coverage area of ​​your home Wi-Fi network

Medium Power DC-DC Boost Converters Based on TL494

Improving the reliability of number identification in phones with caller ID

Increasing the efficiency of vibration pumps

Improving Battery Reliability

Improving the reliability of the voltage multiplier UN8,5 / 25 - 1,2A

Improving the reliability of automation devices

Increasing the reliability of the electric kettle

Increasing the supply voltage of the output stages of transmitters

Increasing the output power output of UM-200

Improving noise immunity and protecting amateur radio equipment in power circuits

Increasing the temperature stability of the operating frequency of the RA3AO transceiver

Increasing Image Stability in VCRs

Increasing sensitivity and questions about choosing a voice recorder

Increasing the sensitivity of the Ishim-003 receiver

Increasing the brightness of fluorescent indicators

Let's talk about antennas?

Under the strings - relay

Noise suppressor and automatic shutdown in the ULPCT (I)-61-II TV

Gift for mom. Musical stuffing for a soft toy

Selection of diodes by parameters

Selection of capacitors of the same capacity

Mobile mounting

Mobile rack mounting

Underwater LED light

Lifecycle support and programming in Xilinx Foundation Series 4.1i under Windows7/64bit

Charging of galvanic cells

Connecting the Caller ID server to the AVU VCh-A block

Connecting a fan from a computer PSU to a 220 V network

Connecting video cards GF3TI, GF4MX440, Radeon to a TV

Connecting a loudspeaker to TTL elements

Connecting decimeter selectors to black and white TVs

Joystick connection to BK0010-01

Connecting an additional battery

Connecting remote control to SVP-4-1

Connecting the LCD to the computer's LPT port

Connecting the LCD to the microcontroller via 3 wires

Connection of imported devices

Connecting a computer to TV Record VTS311

Connecting a computer with color and black-and-white output to color TVs of the 3USCT series

Connecting a tape recorder to a telephone server

Connecting the microcontroller to a remote computer

Connecting Unusual Loads to an Uninterruptible Power Supply (UPS)

Connecting the printing device Elektronika MS-6313 to the computer Elektronika BK-0010.01

Connecting the D-100 printer to a personal computer

Connecting a Printer to the ZX-Spectrum

Connecting the printer to a PC Vector 06C

Connecting printer CM 6337-02 to PC Baltik

Connecting the printer Elektronika MS 6312 to the ZX Spectrum

Connecting temperature sensors to the BM93xx complex

Connecting three-phase consumers to a single-phase network

Soldered conclusions of contacts IVL1-8/13

Undergrounders on the air

Make friends with the keyboard

Improvised means - 2 ...

With hand tools…

Illumination for power plug

Recycled laptop keyboard backlight

Scale illumination in VEF-202

Digital I/O subsystem

Soldering iron stand from nothing

Пожарная сигнализация

fire detector

Search - electrician's device

Search for magnetic anomalies

Troubleshooting digital devices

Field effect transistor KP752A…V

Field-effect transistors of the 2SK series

Useful tool for soldering SMD parts

Polygen for ultrasonic tuning

Printing at SINCLAIR

Polymer mass and its application

Multifunctional apparatus for physiotherapy

Multifunctional High Sensitivity Photometric Detector

Full automation of the electric pump

Full-text databases of foreign information EBSCO Publishing

Regulations on the Nordic Activity Contest

Bandpass power amplifier with linear amplitude response

Semi-automatic for perpetual lamp

Semiautomatic staircase lighting

Semiconductor magnetically controlled integrated circuits of the USSR. K1116KP series. Reference data

Semiconductor barretter with load short circuit protection

Semiconductor switch of alternating current on TO125-12,5

Semi adjustable stabilizer

Obtaining low stabilized voltages

Using Horizon the right way

Polar capacitor in AC circuit

Interference and fight against them

Interference and the fight against them. grounding

Interference and the fight against them. Proper layout

Interference and the fight against them. Pairing

Interference and the fight against them. Filtration

Interference and the fight against them. Shielding

TV interference, where?

Interference-proof shortwave receiving antennas

Noise filter

Noise Resistant RC-5 Decoder

Assistant for the visually impaired

Assistant for the blind

Assistant telephone master

Auto electrician assistant

Float level switch

Popular foreign equipment

Popular foreign transceivers

Popular domestic diodes, zener diodes and stabistors

Threshold device on two elements AND-NOT

Threshold devices for microcircuits of the 155th series

Port КР580ВВ55 in your computer

portable radio

Vostok-S portable radio station

Portable radio station for personal use

28 MHz portable radio

Portable radio station Roshcha-6M

FM portable radio

Portable radio station with FM on the 27 MHz band

Portable FM radio station in the range 144-146 MHz

Portable, available elements

Portable, with AM

portable fan

Portable dosimeter-radiometer

portable radio class

Portable VHF-FM

Village DJ (DJ…)

Read-only storage

Persistent storage devices

Persistent storage devices (masked)

Post-release on the results of the International Industrial Forum Radioelectronics. Instrumentation. Automation

Post-release on the results of the International Specialized Exhibition RADEL 2012

Building a wireless network on a microdistrict scale

Let's build a weighting filter

Let's count incandescent lamps

Hiking the other way

Camping manipulator

Why doesn't the imported phone ring?

Almost Hi-Fi or an amplifier on TANs. Part 3

Almost everything about the tape recorder Belarus-M310-S

Step by step debugging devices on the Z80

Step-by-step creation of a project in CodeVision AVR (workshop on Atmel AVR microcontrollers)

True and only true

Proper nutrition is the key to success

Correct calculation of the power transformer

A holiday that is always with you

Programming practice. We scan ourselves

Practical advice from a telemaster

Practical measurement of parameters. Part 1

Practical definition of wave resistance

Practical application of spiral filters

Turning TP-Link TL-WA5210G into Ubiquiti Nanostation2

Preliminary adjustment of IF contours

Two-channel preamplifier with balanced inputs

Preamplifier for frequency counter

Preamplifier with tone block

Preamplifier - equalizer. Consent block

Preamplifier with tone control for guitar

Preamplifier-corrector with differential input

Great gift for Radio Day!

Signal conversion by heterodyning

Converters of single-phase voltage to three-phase

Converter 12V to 220V

Converter of alphanumeric information to the system of Braille codes

Converter amplitude - pulse width

RS-323 and BS-485 interface converter

USB/RS-232 (RS-485) interface converter for small automation tasks. Part 1 or... Requester Monitor

USB/RS-232 (RS-485) interface converter for small automation tasks. Part 2 or... Semi-automatic interactive barrier control

USB/RS-232 interface converter for small automation tasks. Part 3 or... Expanding the Port

Code converter

Voltage - frequency converter

Voltage transformer

Voltage converter for AVO-5

Voltage converter for remote control

Voltage converter for powering a fluorescent lamp

Voltage converter for powering the ohmmeter of devices of the Ts43 ... series

Voltage converter for Ts-20-05

Voltage converter for digital voltmeter

Voltage converter for electronic games

Voltage converter with sinusoidal output

SB voltage converter for QRP

Normal video to narrowband SSTV converter

Voltage polarity converter

DC to AC converter

Converter Potentiometer - multi-position switch

IF audio converter 6,5 MHz to 5,5 MHz

Converter with choke separation of circuits

Mains voltage converter 230 V to 120 V

Frequency converter for powering a two-phase asynchronous motor

Frequency converter for powering a three-phase motor

Magnetic field interrupter

Preselector for HF receiver

Preselector with Q factor

Automatic device for the beekeeper

Water activator, charger

Kinescope recovery device

Device for measuring capacitance of capacitors

Device for testing powerful field-effect and bipolar transistors in operating mode

Device for monitoring multi-core cables

A device for setting up PBX equipment for triggering a regular and long-distance call

Antenna tuner

Instrument for tuning musical instruments

Selector adjuster

Device for the blind

Device for determining the boundaries of metal in reinforced plastic

Container selector

Device for selection of current optocouplers transmission ratio (CTR)

Device for checking BIS RAM

Loudspeaker Tester

A device for checking and restoring kinescopes

A device for checking and restoring kinescopes with a visual assessment of the cathode image

Device for testing quartz resonators

Chip tester

Instrument for testing oxide capacitors

Device for testing semiconductor zener diodes

Device for checking telephone sets

Device for testing transistors and diodes

Device for testing digital circuits

Instrument for registration of variable fluorescence

Device for registration of radioactive radiation

Device for reflexology

UV-PROM eraser

Device for checking the absence of gaps

electrician's tool

Devices for determining the location of cable damage

Devices for displaying information

Devices for finding acupuncture points

RTTY reception

SSB reception in Ishim-003 receiver

SSTV reception on PC VECTOR

Reception of eight channels on TV UIMCT

Reception of broadcasting in the ranges of 65,8 ... 73 MHz, 88 ... 106 MHz on television receivers

Satellite TV reception

Reception of satellite programs in the C band

Reception of C-band satellite programs with circular polarization

Reception of STV programs in the C-band

Reception of stereo sound programs via radio and television satellite channels

TV reception from multiple directions

Reception of television programs of meter and decimeter ranges

Reception of TV programs in the UHF band

Reception of an electromagnetic field on a small frame

Receiving equipment for satellite television

Receiving loop antenna

3-V-3 radio powered receiver

Receiver 50 - 850 MHz with digital control and memory for 120 channels

Receiver 50 - 850 MHz. Second Life

Receiver Yaeeu VR-500

Air Service Receiver

27 MHz car radio receiver

Wireless receiver with TV

Paging receiver for 148…174 MHz band

Direct Conversion Receiver

80m Direct Conversion Receiver

HF Direct Gain Receiver

VHF Direct Gain Receiver

The receiver works without interference

MW receiver

Satellite TV receiver

Receivers and detectors of radiation

Receivers and detectors of radiation. Directory

Receivers from a minimum of parts

Receiving satellite dishes

Bekas-M transceiver

Receiving-transmitting automobile...

Application of Motorola IGBT devices in switching network adapters

Application of antennas for CB communication

Application of LIS CODEC CD in paging systems

The use of a computer power supply when repairing TVs

Application in the output stage of a power amplifier of tubes with high transconductance

Garage application of NK005 twilight switch

Vacuum Distributor Application

Application of varicap receivers as curve tracers

The use of women's magazines in laser-iron technology for the manufacture of printed circuit boards

Application of the laws of algebra of logic in the design of automation and telemechanics devices

The use of capacitors in audio equipment

The use of K403EN microcircuits

Using 3V DATAFLASH Memory Chips in 5V Systems

Application of accelerometer chip SMB380

The use of the K174UR5 chip in SMRK-2 blocks

The use of optocouplers and thyristors in control circuits for the operation of a powerful electrical load

The use of FPGAs in radio engineering

The use of polycomparator microcircuits in radio communication technology

The use of a half-wave loop antenna on low-frequency HF bands

Application of AD RMS converters in sound level meters and vibration meters

The use of industrial EMI filters in amateur radio practice

Application of piezoceramic resonators

The use of spiral resonators in amateur VHF equipment

Application of the MP350 timer in an automated garden irrigation system

Application of 400 Hz transformers

Application of the electronic clock unit

An example of manufacturing a sensitive element of a temperature meter

Examples of building automation and telemechanics devices on multiplexers-demultiplexers

Examples of calculation of geometric mean distances and corrections for insulation of inductances of coils

Schematic diagram of the Sharp-6 video recorder

Schematic diagram of the radio RQ-2315 (Panasonic)

Schematic diagram of the radio receiver RF966MB (Panasonic)

Schematic diagram of the radio receiver VCP-5900 (Sony)

Schematic diagram of the Rainbow-716 TV

Schematic diagram of the TV Electron-706

Principles of delta modulation

Device for cutting patches

Dismantling tool

Attachment for microdrill

Device for winding transformers

Device for accelerating the etching of printed circuit boards

Attachment to soldering iron Moment

Devices for dismantling microcircuits

Devices for the manufacture of printed circuit boards

FSK Caller ID prefix with number dictation

AFC prefix for SSB receiver

Attachment for measuring inductance

Attachment for powering electric lamps with direct current

Attachment for checking telephone sets

Prefix for listening to MP3 on television receivers

Attachment for VCR

Prefix to GSS for measuring L and C with increased accuracy

Attachment to the M830 multimeter for measuring electromagnetic radiation

Prefix for phones with AVU

Attachment to the telephone server

Attachment for alarm clock. Music call

Prefix to the frequency meter for tuning the oscillatory circuit

Attachment to BelOMO electric dryer

Howler prefix. Burglar alarm device

Prefix-selector for phone

Attachments for connecting two telephone sets

Causes of occurrence and calculation of losses in the magnetic circuits of winding components

About Baofeng UV-5RE in Russian

About Kenwood TS-440S in Russian

About MFJ-784B in Russian

Flashing beacon

Probe

Probe - indicator

Pn junction probe with memory and compass

Capacitor probe

Probe for testing digital equipment

Probe for determining the health of transistors

Probe for testing R and C

Probe for testing quartz resonators

PCB Probe

Thyristor probe

Transistor probe

Probe for digital circuits

LF-HF probe

Probe with separate symbol indication

Electrician's tester

Probe Generator

Probes and indicators

Probe indicators

We are trying to work APRS through a server on the INTERNET

Checking rectifier poles

LCD check

Checking and replacing TDKS (FBT) in TVs and monitors

Checking the indicators on the LCD

Checking the quality of recording programs on magnetic tape

Checking the Quality of a Magnetic Tape

Checking the kinescope

Checking oxide capacitors

Testing thyristor rectifiers

Thyristor test

Checking the phasing of RF amplifier transformers

Wires and cables

Wired remote control with an increase in the number of received channels

Wired TV program control

Wired transceiver

Wire LOG YAGI

Cracker program

A program for building an azimuth amateur radio map

Sound recording program

A program for finding the Nth number or the sum of the N first terms of an arithmetic or geometric progression

Program for communicating with USB HID device

Print program

The program for calculating the division ratio preset for DPKD microcircuits

The program for calculating the frequencies of quartz from the RSIU radio station

Equation solver

Morse code generator program

Programmer

ROW programmer

Programmer for PIC microcontrollers and EEPROM-memory MP9012

Irrigation programmer

Programming AVR microcontrollers without a programmer

Programming in MacOS X. Getting notifications and information about USB devices

Programming to help the radio amateur

Programming the pulse coefficient and interserial pause in the KR1008VZh1 dialer

Mobile phone programming

We program microcontrollers

Programming in C++. Calculator with your brains

Programmable 16-channel light-dynamic device with a serial interface

Programmable CDS with serial interface. Version 1.0

ALTERA programmable gate arrays

Programmable logic matrices

Programmable voltage level indicator from the NN102 kit

CMOS programmable timer IN82C54

Programmable code lock

Programmable Music Call

Programmable Christmas tree garland switch

Programmable voice informer

Programmable selective element

Programmable Frequency Synthesizer

Programmable timer

Programmable timer TM-002

Programmable electromusical bell K25-unison

Programmer - artist

Programmatic adjustment of monitor brightness

Software control of shutdown of computer speakers

Software control of a reversible motor

Programming device for electronic clocks

TFK software package

Extending the life of an incandescent lamp

Remote control service life extension

Extending the life of the kinescope

Extend the life of the glass in the RC-6-2!

Extend the life of a light bulb

Products are preserved by the ionizer

Radio-DND Project

Design and calculation of the VCS two-phase output stage of the transmitter in the range of 200 m (1449 - 1620 kHz) for a power of 50 W

Designing Powerful Low Frequency Amplifiers

Designing a transformer with a non-integer number of turns

Design of control devices for automation and telemechanics systems

Transparent UMZCH

We sift the light bulbs. A simple light and music device

We are looking at photos!

Family TV watching

Simple 110 dB siren

Simple TV antenna

Simple car security system on PIC12C508A

simple antenna

Simple AGC for CW

A simple all-wave television antenna

simple Christmas garland

Simple computer game Mosaic

Simple computer game Japanese crossword puzzle

Simple mechanical-electrical charging

Simple modernization of the apartment bell

Simple burglar alarm

A simple burglar alarm for a cottage or garage on a microcontroller

Simple security system

Simple soldering station

Simple dialing

A simple radio station in the range 144-146 MHz

Simple relay protection

Simple LED lamp

Simple light music

Simple intercom

Simple alarm

simple siren

Simple public address system

Simple cable TV system

Simple Chaotic Carrier Communication System

A simple three-phase voltage inverter control circuit

Simple three-phase motor protection

Simple VHF-FM radio station

Simple broadband antenna

A simple broadband television antenna

Simple, pocket, for the village. portable radio

Simple, portable. small radio station

The simplest charger for NiCd batteries

The simplest security devices

The simplest sound signaling circuits

The simplest VHF transmitter toys

The simplest electronic clock

The simplest power supply

The simplest embedded caller ID

The simplest display on seven-segment indicators

The simplest linear voltmeter

The simplest logic probe generator

The simplest programmer for ATTiny microcontrollers

The simplest resonant wavemeter

Easy radio repair

The simplest network filter

Just a phone

Simple remote control

Simple gel battery charger

A simple charger for gel batteries. Refinement

A simple charger from the car on-board network for a rechargeable flashlight

Simple reminder device

Simple security device

A simple security device via radio in the FM band

Simple intercom

A simple intercom for the village

Simple time relay

Simple I2C chip card reader

Simple timer device

A simple device for safely switching on network equipment

A simple device to automatically turn on speakers for PC

A simple telegraph device

Simple water purification device

Simple photo relay

Simple economical photo relay

Simple PWM controller

Simple RC generator at 1000 Hz

A simple RGB night light on ordinary bright LEDs and a PIC12F629 microcontroller

Simple SSB mini transceiver for 160 meters

Simple car voltmeter

A simple autonomous robot

Simple adapter for in-circuit programming via SPI

A simple analogue of a microcircuit

Simple Anti-AON

Simple power supply

Simple power supply with short circuit protection

Simple power supply, charger

Simple control unit for electric honey extractor SEZON_LIMITED

Simple phone dial blocker

Simple fast optoelectronic switch

Simple rectifier

Simple AGC Rectifier for UW3DI-I

A simple high voltage stabilizer

Simple high quality UMZCH

A simple high voltage generator

A simple generator for tuning tape recorders

A simple sweep generator

A simple generator of rectangular pulses from obsolete elements

A simple second pulse generator

Simple guitar/microphone amplifier based on IC TDA2002/2003/2008

Simple GPA

Simple GUI

Simple Dual Power Supply

A simple push-pull amplifier

Simple AM ​​demodulator

Simple DFT (transceiver band-pass filter)

Simple sound generator

Simple meter R, C, L

Simple indicator for AB

A simple indicator of ionizing radiation

Simple field indicator

A simple indicator of radioactivity

Simple battery low status indicator

A simple radiation level indicator

Simple intercom

Simple tester (tester) of thyristors and triacs

A simple low power transistor tester

Simple HF Converter

A simple home bell on a 555 series timer

A simple 1 kHz crystal oscillator

Simple code lock

Simple converter for 160 meters

Simple battery voltage controller

Simple washing machine controller

Simple laboratory power supply

Simple tube SE amplifier

A simple tube IF with piezo filters

A simple logic probe on a K155LN1 chip

A simple small-sized oscilloscope on 3LO1I

Simple small-sized frequency counter

Simple metal detector

Simple metal detector

A simple method for measuring mixer compression

Easy mounting method

A simple method to increase the stability of the GPA

Simple mixer

simple oscilloscope

Simple guard timer for controllers and microprocessor systems

Simple transmitter

Simple TV Antenna Switch

Simple operation type switch

Simple voltage converter DC 12 V / AC 220 V

simple receiver

Simple receiver at 27 MHz

A simple programmer for programming AVR microcontrollers via COM port

Simple IC programmer KR556

Simple remote control for playing Brain-Ring

Simple beacon

Simple radio microphone

Simple direct amplification radio receiver

Simple radiotelephone

Simple radiotelephone ver 2.0

Simple radiotelephone ver 2.1

Simple radio broadcast alarm

A simple spreader for a winder

Simple Adjustable Rectifier

Simple volume control

Simple Power Regulator

Simple soldering iron tip temperature controller

Simple repair of the electronic ballast of a popular portable lamp

4,3 kW simple welding machine

Simple humidity alarm

An easy way to fix the circuit board in the case

An easy way to check the health of antenna amplifiers for television antennas

A simple way to repair REA on microcircuits

Simple current stabilizer

Simple superheterodyne receiver

Simple superheterodyne HF radio receiver

simple timer

Simple fixed timer on PIC12F509

Simple tachometer

simple thermometer

A simple thermometer in an electronic watch

Simple thermometer with temperature sensor on DS18B20

Simple temperature controller with hysteresis

simple thermostat

Simple ham radio tester

Simple transceiver RF path

Simple VHF FM super-regenerator

Simple UMZCH

Simple universal automatic daytime running lights

Simple universal high sensitivity radio receiver

Simple universal thermostat

Simple universal thermostat on PIC16F628A microcontroller and DS18B20 sensor (version 2)

A simple amplifier for electric guitar or electric violin on the LM386

A simple audio amplifier

A simple AF amplifier and experiments with it

A simple AF amplifier on TDA2005

Simple low frequency power amplifier

A simple amplifier with a stabilized power supply

A simple photoelectric amplifier for TV remote control

Simple cyclic timer

Simple digital generator

Simple digital indicator

Simple digital pocket oscilloscope

Simple digital potentiometer

Simple digital thermometer

Simple electronic counting frequency meter

Simple electronic autoguard

Simple electronic key

Simple electronic household load control timer

Simple high quality IC amplifiers

Simple measuring instruments

Simple radio microphones with FM

Simple perfect timing relays

Simple TV signal splitters

Simple 27 MHz transceivers

Simple trinistor switches - guitar effects switches

Simple UZCH

Simple devices to quickly check the remote control

Simple chargers for Ni-Cd and Ni-MH batteries

Simple Devices: Do Something!

Simple FM radio microphones

Simple electronic clock

Pain stimulant

Anti-theft device

Motorcycle anti-theft device

Anti-theft device with powerful sound alarm

The X10 protocol is simple

DTMF and FSK protocols in telephony

Professional method of hardening (training) metal-ceramic generator radio tubes

EME communication procedure for 432 MHz bands and above

Firmware ROM Caller ID on Z80 (version 7.15)

Rectangular profiles instead of round tubes

Pseudo-Google Translate API. Making an online translator with voice acting

Pseudo fan for computer

Pseudo-fork

Pseudo security alarm

Pseudo stereophones

Psychology of one radio circle

PTK - body of a radio amateur device

Scarecrow for mosquitoes and rats

Pulsating charger and recovery device

Remote control

Remote control for digital SLR cameras

The remote control opens the gate

Security alarm panel

GSM alarm control panel

Control panel for Compact Flower DMX lighting effects

Car starters

Start-charger

Let the light bulb live

Journey into the world of scientific and technical information

Ways of developing SSB/FM radio stations in the CIS

Bee venom using ASM-1

Piezo emitters: some characteristics

Piezoceramic sensor

Five-channel stereo mixer

Five-lamp receiver Dnipro-52

RA on lamp GU-13, 6P45 or GK-71, GU-50

Caller ID work with PBXs of old types

Operation on QRP in the 50 MHz band

Working with DDS (Direct Frequency Synthesizer) AD9850 based on HC-SR08 module from VBS script

Working with APPA109N multimeter. Part 1... Remote Data Reading

Working with APPA109N multimeter. Part 2... Sounding measurements

Working with the RS-232C serial port in Delphi

Working with a thermal receipt printer GODEX EZ-DT-2

Work with the PMP-200/201 level gauge according to the SENS protocol

Working with the emulator

Radiators from faulty transistors

Radio in the land of Kamasutra and divine cows

Radio in the land of pink tulips and yellow daffodils

Radio in the country of Ruhnama

Radio in the land of bullfighters, hidalgos and flamenco

Radio in stream format

Canaan land radio

Radio from the center of the African continent

Liberty Island Radio

Radio that brings people the truth ...

Broadcasting in Azerbaijan

Broadcasting on the Internet

Broadcasting in Russia

Broadcasting in the country of Ataturk

Broadcasting in Ukraine

Broadcasting from TERRA AUSTRALIA INCOGNITA

Broadcasting from the country of the Prague Spring

Broadcasting in Russian

Broadcasting: a little bit of everything

CB broadcasting antenna

Broadcast receiver 6N-1

Do-it-yourself radio components

radio call

Radioconstructor Stereoplayer

Radiola Belarus-59

Radiola Belarus-S2

Radiola Cantata-203

Radiola Record

Radiola Record-53

Radiola Strela

Radiols Record-60 and Record-60M

Amateur radio exhibition in Vinnitsa

Radio amateur shortwave phased antenna array for a range of 20 m

Radio amateur workshop

Amateur radio devices in ... PTK

OSCAR 13 amateur radio satellite

Amateur radio frequency counter

Radio amateur frequency meter - 2,5

Radio amateur frequency meter - digital scale

Amateur radio on 50 MHz

To a radio amateur about medical devices for individual use

Radio amateurs about signaling

Radio amateurs about satellite television

Radio marathon Call of distances

Radio beacon for mushroom picker

Radio microphone

108 MHz radio microphone

Radio microphone on two microcircuits

Radio microphone on one chip

RMM radio microphone (VHF-FM)

Radio microphone with high frequency stability

Radio microphone with FM at 87,9 MHz

Ultra low power radio microphones

Baby Monitor

Radio security device

car radio security device

radio pager

radio intercom

Radio transmitter for burglar alarm

470 MHz FM radio transmitter and receiver

CB radio transmitter and receiver

28 MHz radio transmitter for DF

burglar alarm radio transmitter

VHF-FM radio transmitter

Radio transmitter-beacon 28 MHz for radio direction finding

All-band radio transmitter

Radio mobile 6PB-11

Radio mobile type RPU-1

CB radio call signs 27 MHz in some Russian cities

Radio reception in the car

Radio reception in the VHF band

Radio receiver - network wiring finder

Punane RET VV-662 radio receiver. Brief historical overview

Radio receiver TURBO-TEST

Radio receiver VEF-214

Anar-3K radio receiver

Radio receiver VEF-201

Radio receiver for burglar alarm

player radio receiver

Radio receiver Ishim 003 - all-wave radio amateur receiver

Radio receiver Combi-Test-T

Radio receiver Combi-Test-TM

Miniature radio receiver SIGNAL 301, SIGNAL 301E. Portable radio station RPU-10 SIGNAL

Radio receiver Mir (M-152)

Radio receiver on IC TDA1072

Radio receiver Neva-52

Ocean radio

Radio receiver Record

Radio receiver SI-235

Radio TEST

Broadcast radio receiver of the highest class Ishim-003

Broadcast radio receiver Kazakhstan and Kazakhstan-2

Broadcast radio receiver TPS-54

Radio receiver Extra-Test

Direct amplification radios

Radio signaling device

Radio station in a school pencil case (type D)

VEBR-NR radio station

Radio station Grodno-R - no problem!

Radio station from available parts

Hummingbird radio station

Radio station LEN-V (1R21V-3)

Radio station on 27 MHz

27 MHz radio with low IF

Radio station on three transistors

Radio station Pilot

Radio station R-433

Radio station with AM

radio toy

Radio watchman

Radiotelephone

Panasonic KX-TC41BX cordless telephone

Radiotelephone from the receiver

Radiotelephone from a radio station

Radiotelephone RTF-92

Radiotelephone interface

Radio engineering

Radio point - alarm clock

Radio point for ... bees

Radio path of the transceiver

Radio extender for the city

RF cables

RADEL-2005: five years of dynamic growth

RADEL-2007. Exhibition Radioelectronics and Instrumentation in St. Petersburg

One, two, three - Christmas tree burn!

1x2 number splitter powered by telephone line

Telephone line splitter

Extended telephone line splitter

Development and achievements of NXP. Element base of flat panel TVs

Isolation transformer for powering transmitters of individual broadcasting and equipment of on-air studios

Conversation with the head of the HIE

Release agent for gluing PA

Demagnetizer from a magnetic starter

Panel layout

AC placement in domestic conditions

Video multiplier

465 kHz frequency difference generator

Different things on the timer KR1006VI1

Electronics circle developments

Battery Discharger

Connector for transistors

Safety frame with radio signal transmission

PCB frame

Loop Antenna

Frame amateur VHF antenna of universal polarization of the range of 2 m on elements of the envelope type

Radio reception report

RAS - a look from the outback

The orbit schedule of the Radio M1 satellite

Schedule of radio stations broadcasting in Russian

Text recognition in their programs. Using Free GOCR

Distribution of channels of the television satellite Astra

Solution for boards

Fuel flow meter

Calculation of an 8-crystal quartz ladder filter

Autotransformer calculation

Autotransformer calculation

Calculation of propellers

Calculation of the L-shaped band-pass filter

Calculation of a double resistive divider

Calculation of wire diameter for fuse links

Calculation of a pulse transformer of a push-pull converter, taking into account losses due to surface effects

Calculation of the inductance of multi-section coils and chokes

Calculation of quartz filters on the Radio-86RK computer

Calculation of coordinates of the earth terminator when predicting DX QSO

Calculation of the main parameters of power reactive elements of a resonant and quasi-resonant voltage converter using the Lagrange series

Calculation of parameters and redundancy of elements of LED chains

Calculation of operating frequencies and their harmonics for quartz from the RSIU radio station

Calculation of discharge characteristics of galvanic cells

Calculation of power transformers

Calculation of a synthesizer based on a PLL with DPCD

Calculation of television VHF antennas Wave channel using universal tables

Heating cabinet calculation

Calculation of thermoelectric parameters of incandescent lamps

Battery charge current calculation

Calculation of current transformers

Calculation of the elements of the oscillatory circuit for stretched tuning

Expanding the capabilities of PC Baltik

ZX Spectrum keyboard extension

Extending the functionality of the BEF-1801 frequency meter

Expansion of the frequency range of UHF set-top boxes

Advanced arithmetic

Oscilloscope Spectrum Expander

Does the attenuator increase the dynamic range of the receiver?

QR code decryption offline or... Barcode scanner based on regular USB WEB-camera

Reactive elements and their electronic counterparts

Reanimator of microcontrollers AVR ATtiny13

Washing machine reanimator

Resuscitation of the universal electro-mechanical timer

Reversible mixer

Regenerative and super-regenerative radios

Regenerative receiver or optimum mixer

Regeneration of STs-21 elements

Pulse recorder for contact-spot welding installations

Recorder of the presence of constant and alternating magnetic fields

Registers

Uout adjustment of a transformerless power supply

Adjustment of turns of electric motors

Bandwidth control

Adjusting the speed in the game Just you wait!

Fan speed control

Adjustable flash lamp

Adjustable color generators

Adjustable frequency dividers of digital signals on RC transients

Adjustable bipolar power supply with microcontroller

Adjustable power supply

Regulated power supply with ATX-based voltage and current stabilization mode

Adjustable integer divider

Regulated power supply with protection

Adjustable voltage converter

Adjustable current stabilizer

Adjustable current regulator for powering high-power LEDs

Adjustable zener diode BT431

Volume and tone control of a modern stereo complex

Volume control on TEA6320 and PIC16F84

Regulator for car windshield wipers

Soldering iron regulator

Regulator for electric motors models

Solar battery charger

Power regulator

Power controller for resistive load

Power regulator for household appliances

Power controller for inductive load

Power controller for soldering iron

Power regulator for light bulb

Heating device power regulator

Soldering power controller

Feedback Power Regulator

Mains voltage power regulator with an even number of half-waves (segments of full sinusoids)

Voltage regulator NF278

Burner voltage regulator

Voltage regulator for halogen lamps with memory

Motorcycle Voltage Regulator

Voltage regulator for pyrograph

Voltage regulator for pyrograph. Part 3

Low-voltage incandescent lamp dimmer

Fan Speed ​​Controller

Tone control

Cabin air temperature controller

High-frequency microwelding current regulator

SCR current regulator

Collector motor speed controller

Speed ​​controller for three-phase asynchronous motors

Drill Speed ​​Controller

Incandescent lamp dimmer

Incandescent lamp dimmer

High power RGB 3x1W LED dimmer

Power regulators

Wire feed motor speed controllers for semi-automatic welding

Soldering iron temperature controllers

Editing electronic circuits on a PDA

Editor D Tech 4.1 and Electronics MS 6312

PSE Resource Editor

Long Play mode in VCRs BM-18, BM-23, BM-25, BM-27

Long Play mode in the BM-12 VCR

AM-FM mode in UW3DI transceiver

Cuckoo mode in electronic clock

Monitor mode in Record VTs-311 and Yunosti Ts-404

Rollback mode in the tape recorder Orel 101-01 Stereo

Regeneration mode in a super-regenerative receiver

Backup Antenna

Backup power supply

Redundant power supplies based on ionistors

Backup power supply for phones with caller ID

Backup channel for electronic lock

Resistor

Resistor assemblies for surface mounting YC12, YC16, YC24, YC32. Series YC15, YC17, YC35

Fixed resistors for surface mounting

Fixed metal film resistors

Resistors are constant powerful. Type PRW, type KNP

Resistors. Types, symbols

Cutting glass along a curve ... with a soldering iron

Resonance and Nikola Tesla (bifilar coil)

Resonant frequency... with a turntable

resonant matching

Results of the competition for the best antenna amplifier

Thread on printed circuit boards

Reincarnation 6P21S

Reincarnation 6S19P

Recommendations for combating pirates

Recommendations for buying Chinese FM receivers

Recommendations for assembling and configuring the Phone PLUS 1992 telephone server

Relaxation oscillator on transistors

Time relay

Time relay for game library

Time relay for photo printing on digital ICs

Time relay from electronic alarm clocks

Time relay on CMOS chips

Time relay on KR512PS10

Time relay on the microcontroller

Time relay with trip indication

Momentary light relay

General purpose relay

Cooling system relay VAZ-2103…2108

Relays solid-state optoelectronic (hybrid)

Motorcycle Turn Signal Relay

Relay-breaker in thermopack

Car Breaker Relay

Relay-regulator for motorcycle Java

Repair of Li-Ion batteries

Repair of rechargeable batteries for portable equipment

Repair of acoustics with non-standard use of a horn

Repair of APCG antennas

Portable VHF radio antenna repair

Battery compartment repair

Repair of the power supply of the microwave oven

Repair of the Mercedes C180 W202 electric fan control unit

Repair of SKD and SKM blocks

Samsung VQ-306 VCR repair

MC6105 video monitor repair

Repair video player GoldStar PR 500 AW

Repair of VM-12

Telephone ringer repair

Repair of the high-voltage part of color TVs

Repair of Horizon-606

Repair of disk accumulators

Repair freeze monitor IIYAMA ProLite E481S

Repair of foreign handsets

Repair ZU MAXSOM

Repair and features of choosing a PC keyboard

Repair and improvement of industrial relay voltage stabilizers

Repair of imported VCRs

Repair of imported phones

Switching power supply repair

Repair of switching power supplies

Repair of variable capacitors

Repair of the SPTA housing and modernization of the Ts20 tester

Repair KTS405

Repair of a tape recorder

Monitor Repair

Remote control repair

Repair of the RFV board of the tape recorder

Repair of the film keyboard of microwave ovens

Repair of the Polish air ionizer

Breaker repair

Repair vacuum cleaner LG Turbo (VC20262HU)

Repair of radio receiver selenium RP296M

Radiotelephone Repair International

Repair of radiotelephone International TL 6703

Repair of the Russian flashlight Cosmos

Selenium pillar repair

Repair of SKD-24

Bompani washing machine repair

TVS repair

Philips 20 TV repair

TV Repair SPORT-213

Repair of TVs ZUSTST

Repair of TVs UPIMTST

Handset repair on KS5805A

Iron repair

Philips hair dryer repair

Watch repair

Repair of the electronic module of washing machines

We repair players

Reorganization with optimization

Repeaters

Repeaters in Greece

Romania repeaters

Receiver on a TDA 5220 chip

Intercom review

Voice informant Gnome

Drawer for the board

PCB drawing using sPlan 7.0

Drawing diagrams using sPlan 7.0

We draw a board

We draw a board without acetone

We draw boards with rosin

We draw boards with a marker

Socket for lazy people. Device for connecting a network of several devices

Short wave rock

Rhombic antenna for TV reception

EEPROM with UV erasure

RS-90-3 instead of RS-90-4

Handles made of ... cable

Radio control knobs

Manual winding and calculation of the inductance of coils Universal

Manual generator

RF limiter

RF connector made of low-frequency

Lever hand shears for foil material

With hope for the best

From heaven to earth ... Inductances and capacitances

Where does RADIO begin...

Subwoofer on a dynamic head 50 GDN

self-latching relay

Samovar for mineral water

Self-propelled models from illiquid assets

Homemade soldering station

Homemade satellite dish

Homemade inductors

Homemade drills

Homemade small diameter drills

Homemade CAT to USB for Icom

Homemade antenna insulator

Homemade induction heater in a water heating system

Homemade LCD controller on a microcontroller

Homemade crocodile

Homemade ... gas accumulator

The smallest CW key

St. Petersburg DX Club

Diode Assemblies

CB AM receiver on K548UN1A

SW communications in the mountains

Welding machine

Welding machine with two-transistor forward converter

Welding machine with a half-bridge converter with a power of 4 kW

Welding small-sized

Welding compact... Addition

Welding semiautomatic device in garage conditions

SVD - Network All-Wave Long-Range Reception

Information about programs transmitted from satellites in the 11 GHz band

Sparkling glass MT5002

Drilling machine from a photographic enlarger and an electric drill

High precision drilling machine with optical sight

Super dynamic UPCH

Subminiature switching power supply in the dimensions of a thimble

Super Regenerative 144 MHz Receiver

Super Regenerative VHF Receiver

Super Regenerative Receiver: Myth and Reality

Super-regenerator with external start

Super-regenerator with switched LC circuit

Ultra Wideband Integrated Amplifier

Ultra wideband monolithic integrated mixer 15 - 1000 MHz

Ultra-wideband monolithic integrated amplifier M421104 (1 - 700 MHz)

Super bright, flashing, full color and popular single color LEDs

Super economical generator

Ultra Economical Receiver

Ultra Economical, HF

The light in the kitchen turns on automatic

Light... through oil

Soldering iron lamp

Luminaire with room security function

Lamp Turtle-2

Light acoustic physiotherapy device

light mosaic

Light pen for ZX-Spectrum

Light effect Chameleon. Self Soldering Kit NN101

Christmas tree light rings

Light effects from sets

Light dynamic installation

Light dynamic glasses

Light-dynamic device Running fire

Light-dynamic device Running fire: automatic mode

Light dynamic device for 32 channels

Light-dynamic device-night light

LED festoon

Switch LED indication

LED lamp

LED lamp with driver

LED car interior lighting

LED CMU

LED displays

LED indicators of microcontrollers

LED lamps as an alternative to halogen lamps

LED Matrices

LED USB Light

LED emergency light

LED emergency light (CAO6)

Power amplifier output LED indicator

Power indicator LED

Battery voltage LED indicator

LED cube 4x4x4 on PIC16F874A-I/P microcontroller

LED cube 5x5x5 on the microcontroller PIC16F877A v.2

LED cube 8x8x8

LED cube LED CUBE 4x4x4 Nano: assembly order

LED Cube for Arduino Nano

Solar powered LED beacon

LED Desktop Light

LED signal light

MP1054 LED Pointer Gauge for Modern Audio Power Amplifier

LED flashlight

LED bug lantern

High brightness LEDs KIPM20

Bicolor LEDs

SMD LEDs

LEDs and indicators

LEDs flashing

Single color LEDs

LEDs with holders

Light and sound signaling device

Light and sound signaling voltage 220 volts

Light and sound overload indicators for amateur radio power supplies

Light emitting, IR and photodiodes

Lightometer

Light music on the tree

Light and music bells

Musical instrument-toy

Musical fountain

light beacon

Dimmer switch with smooth increase in brightness

Light synthesizer DYNA

luminous photography

Glow of LEDs with auto-reverse

Freedom that came from the beach

Summary tables of low-frequency power amplifier microcircuits

MW radio stations - new opportunities

SW radio station

microwave transistors

Microwave transistors of the 2N series. Series 2SA

Microwave generator for the range of 1,2-2,4 GHz

Microwave sensors in burglar alarm systems

Microwave divider for frequency meter

Coupled filter chokes in multi-output buck regulators

Connected aviation receiver US-9 or Nightingale

Communication receiver US-P (PR-4P)

Communication of computers without wires or Elimination of the monopoly of automatic telephone exchange

Holy Simplicity - 2 or Advanced Transformerless Tube Transistor Power Amplifier

Holy Simplicity or Transformerless Tube - Transistor Power Amplifier

Holy simplicity, or transformerless tube - transistor power amplifier

SG206B in telephone line protection

Dual Voltage Regulators ILA8133A, ILA8137, ILA8138A

Dual transformers

Dual Bridge DMOS Driver IL9001

Let's make the radiotelephone loud-speaking

SDU based on RSA84S640-R/019 microcontroller

Seva, Seva Novgorodtsev, City of London, BBC

SECAM at the computer output

Soldering Secrets

Program selector for Ishim-003 radio receiver

SSTV Sync Selector

Satellite channel selector with video amplifier and audio channel

TV channel selector SK-MKD-15

Channel selectors SK-M-30-1 and SK-D-30-1

Semi-tube radio receiver and VEF-Akkord radiogram

Semi-tube receiver Dzintars and radiola Sakta

Semi-lamp radio receiver Baltika-52

Semi-lamp radio Zvezda-54

Seven segment indicators

Seven-element Wave Channel Antenna

Seventy-two years of Bulgarian radio broadcasting

Optical mouse sensor

Latched sensor

Touch button with latch

Touch switch radio

Chandelier touch control

Touch device with trigger

Touch-sensitive light switch with switch-off delay

Touch generator for Morse learning

touch call

touch key

Sensor manipulator of the electronic key

Touch input switch

Touch switch load

Touch Code Converter

Sensor alarm

Service for the boss

Service charger-starter

Service low-frequency generator CIS-98

Sergey Davidchik. American console in European style

Heart passions. How to play a cardiologist

Silver against the flu

Network control

Network adapter for pager

Power adapter with step-up voltage regulator

AC adapter

Screwdriver power supply

Network vibration probe

Mains rectifier with current multiplication

Network on/off

Network driver of a powerful LED from a Chinese charger

Network capacitive divider-rectifier

Network capacitive divider-rectifier (line of bipolar voltage stabilizers)

Grid inverter (grid-inverter)

Network individual radio receiver SI-235

Power switch with indicator

Network radio microphone

Network voltage stabilizers (normalizers) based on industrial relay stabilizers

SAT TV Frequency Grid

LF satellite frequency grid

A network that spans the world...

SI-235 - network individual radio receiver

Color bar generator signal

Signal to the watchman

Signaling device

Ice warning device

Angler alarm

Alarm Close refrigerator

Alarm Close the door! (SZD2)

LED indicator

Vehicle tilt alarm based on electronic gyroscope

Refrigerator open alarm

Signaling device for illegal connection to the phone

Signaling device for the end (suspension) of the washing machine based on the MSS-1-3 sensor

Lock opening signaling device

Power Failure Alarm

signaling plus

turn signal

Mail incoming alarm

Low battery indicator

Battery discharge indicator

Signaling device for the angler

Step-up alarm

Coolant level indicator

Organ Sounders

GSM signaling using iButton keys

Alarm for bank cards + wallet as a gift MT1030

Mobile phone alarm

Fuel tank alarm

Alarm security device

signaling device

Power electronics. Theory and design

Power electronic key

Power keys for mains voltage stabilizer

Power modules based on Schottky diodes

Power modules on field-effect transistors

Power modules based on ultrafast diodes

Power relays

Silomer

Symbolic marking of capacitors

Triac in mains plug

Triac power controller

Triac speed controller for asynchronous fan

Triac dimmer

Vibrator balancing

Symmetrical vibrator for 27 MHz

Simplex radio station

Drum Sound Synthesis

Pulse Pattern Synthesizer

Voltage synthesizer

Speech synthesizer

Speech synthesizer for ZX-Spectrum

Sine synthesizer

Phrase 73 synthesizer

Frequency synthesizer for 27 MHz car radio

Frequency synthesizer for setting the color block

Frequency synthesizer for portable radio station

Frequency synthesizer based on modern element base

Frequency synthesizer: therapeutic effect on skin capillaries

Frequency synthesizer

Frequency synthesizer for shortwave transceiver

Frequency synthesizer for portable radio station

Frequency synthesizer for a radio station in the range 144-146 MHz

Frequency synthesizer for transceiver

Frequency synthesizer for upconverting transceiver

Frequency synthesizer at 27 MHz

Frequency synthesizer based on the K580VI53 timer

Frequency synthesizer for 27 MHz band

sine to op amp

sine wave generator

Common-mode interface chokes of the SK, CD and CO series

Common mode toroidal chokes CA series

Pulse Sync TV Video Codec

Synchronizer for overhead projector

Pulse Train Synchronization

Synchronous phase detector MIS-25

Synchronous rectifiers

Synchronous AM detector

Synchronous AM detector with wide dynamic range

Synchronous DSB Transceiver

Siren with flasher

Personal security sirens

ALC system

Automatic garden watering system for half an hour

Remote control system for tape recorder VILMA-115C

Stationary radio remote control system

Home alarm system with telephone notification

Control system with speech output of information

Control system with speech output of information BSK-2

GSM notification system

IF smooth lane change system for the Urals

FSS adjustment system when changing the GPA frequency

Communication system on chaotic carriers with direct synchronization

Telephone system

Home Lab Smart Lighting System

Three-column deaerator control system

Atmel STK200/STK300 System Programmer

Scanning receiver P-45

Fastening panels of amateur radio structures

Hidden features of Laurent family modules

Low-current electromagnetic direct current relays (SEMR)

Sweet couple: loudspeaker + UZCH

Watching space weather, or NOAA. Geomagnetic activity of the Earth for the last 30 days

Gathering Penza-350 Yubileinaya

Dictionary - reference

Amateur Radio Slang Dictionary

A word about the Rogowski belt

Addition of signals from two antennas

Eureka broken? Eureka!

Hearing aid

SMS management of a country house

Bowed electric musical instruments

Reducing the temperature of the computer system unit

Reducing the temperature of the PC system unit

Reduced thermal distortion of differential stage

More about the PANTERA radiotelephone

Again about the three-phase transformer

Make a copy? - there is nothing easier!

dog locator

We assemble ourselves an FM radio receiver - a radio designer - coloring MIRACLE KIT EK-001P

Improvement of tube super-regenerative low-voltage receivers

Improving simple VHF transmitters

Tips for motorists when using cell phones

Wizard's advice (telephone repair)

Tips for restoring the health of lamp Christmas garlands

Tips for Restoring Game Cartridges

SSB/CW Passband Combination in a Variable Bandwidth Crystal Filter

Modern car-stationary radio station

Modern car-stationary radio station of the 27 MHz band

Modern portable radio station in the 27 MHz band

Modern dialing

Modern technology for the manufacture of the case and front panel of the device

Modern integrated switching voltage regulators and PWM controllers from National Semiconductor

Modern small metal detectors

Modern microcircuits for quasi-resonant power supplies from Sanken and Shindengen

Modern operational amplifiers from National Semiconductor

Modern fuses and thermostats for radio equipment and household appliances

Modern Hi-P audio amplifier D-class 315 W

Modern amplifier-corrector

Modern power amplifier on GU-91B

Modern color TV Vityaz

Antenna matching Inverted V

FET matching

EMF matching

Coordination of EMF with non-standard loads

Matched amplitude control device for powerful harmonic signals

Coaxial cable matching device

Matching stages in power load control nodes

Matching devices for LEVY type antennas

Connecting home video equipment via SCART

Creation of systems for collective television reception

Creation of an HDTV installation

Creation of HDTV installation. Inductor

Creation of HDTV installation. Work on mistakes

Creation of HDTV installation. PLL system

Abbreviations and conventions

Pairing the video player and TV in Recording mode

Pairing contours

Pairing the SDU with the SVP-4-2 selector

Composite transistor KT8225A

The state of terrestrial digital television and the production of subscriber equipment. Modern element base for digital TVs and set-top boxes from NXP and Renesas

The state of terrestrial digital television and the production of subscriber equipment. Modern element base for digital TVs and set-top boxes from NXP and Renesas.

Cell Bridge SalTel 80 Pro Version

SalTel 85-FXO cellular bridge on ATMega8515 microcontroller

Cellular telephone bridge SalTel 86 with FXS interface

Cellular telephone bridge SalTel80-16 on microprocessor Z80A

Preservation of clock readings during short-term power outages

Save retro discs

Special cassettes Magnolia Ltd.

Speedometer with speed control

Helix Antenna

Spiral antenna for portable radios

Spiral vibrator antennas

List of amateur satellites

List of mailboxes AMTOR

List of mailboxes operating in AMTOR mode

Splitter for two directions

Method for dismantling microcircuits

Parts Replacement Method

Method for manufacturing chokes for TX

PCB Manufacturing Method

Method for manufacturing flat parts from fiberglass

Method for manufacturing a spherical speaker

Method for manufacturing false panels

Chip mounting method

Winding method of toroidal transformers

Winding method of transformers

How to apply photo layer

Method for external ignition of a fluorescent lamp

Soldering iron tip cleaning method

Method for transferring wiring diagram drawings

A method for increasing the quality factor of spiral resonators

Method for obtaining a printed circuit board drawing

Input Bandpass Filter Presetting Method

How to repair LED Christmas garlands

Synchronization method KR580GF24

Method for precise installation of universal heads

Way to increase the number of channels

Anchor nut installation method

Ways to reduce and calculate losses from buckling of magnetic fluxes from gaps in the magnetic circuits of winding components

Ways to eliminate interference

Video Handbook

Reference data of output transformers of radio receivers

Reference information of popular batteries

DBS type satellites

Satellite navigation system GPS

Satellite TV for beginners

Satellite television and radio programs

FPGA design and debugging tools from ALTERA

Tools for developing and debugging programs for controllers of the MSS-51 family

Communications without power

Stabilizer 13,8V/10A

Stabilizer U/I+ZU

Camcorder External Power Stabilizer

Stabilizer for PSU transceiver 13,8V/30A

Stabilizer for powering radio stations

Stabilizer for Elekta

power stabilizer

Voltage regulator

Soldering Iron Voltage Stabilizer

Voltage stabilizer from MASTER KIT NM1013

Voltage stabilizer on K155LA18

Voltage stabilizer with protection

Variable Temperature Coefficient Voltage Regulator

Soldering Iron Voltage Stabilizer

AC voltage stabilizer

Stabilizer with a controller based on digital microcircuits for active-inductive load

Low voltage stabilizer

Stabilizer with microcontroller control

Mains voltage stabilizer with a power of 8 kW (mains voltage stabilization range 150 ... 262 V)

Mains voltage stabilizer of increased accuracy with load power up to 6 kW

Mains voltage stabilizer Timoshka

10 A current stabilizer

Current stabilizer for 8 mA from a voltage source of 6 ... 180 V

Arc Current Stabilizer

Speed ​​stabilizer

Engine speed stabilizer LPM

Stabilizers of the amplitude value of the alternating voltage

Negative Voltage Stabilizers

Stabilization Uout capacitor rectifier

Motor speed stabilization

Frequency stabilization

Speed ​​stabilization of powerful electric motors

GPA frequency stabilization

Stabilized power supply

Stabilized switching power supply from a three-phase network 380 V

Stabilized 12 V power supply

Stabilized Converter

Stabilized converter for remote control

Stabilized voltage regulator

Stabilized electric drive

FET zener diode

Zener diodes KS417, KS528

Stable oscillator

Stable generator with FM

stable amplifier

Ham radio frequency standard

Standard transmission lines

Standard KPI at high RF voltages

Transformer winding machine

Board drilling machine

Starting an asynchronous generator

Start-7176 controls the video player

Start area

Good old KVN-49

An old friend is better than two new ones, or once again about the UW3DI transceiver

The old one is better than the new one

Fiberglass + tin for mounting

Stand for testing control units and protection of electromagnetic starters

CEA adjustment stand

Stereo FM Receiver Style

stereo decoder

Stereo decoder in Ishim-003-1 radio receiver

Stereo decoder for pilot tone system

Stereo modulators for FM

Stereo receiver with digital dial

Stereo tone control for treble, bass and volume

D-class stereo audio power amplifier expandable to six channels

Stereo bass amplifier 2x1 W for headphones

Stereophonic radiola 1st class Riga-101

Stereo loudspeaker in... Rigonde

Stereo VLF on MOSFET transistors

Stereo FM transmitter

Stereo broadcast

Sterilizer

PROM washing machine

The Mara washing machine is controlled by an electronic unit

Ultrasonic washing

Stop light Running lights

Chirping electronic cricket

Strobe

Pulse-phase controlled stroboscope

Stepped capacitive power regulator for low voltage soldering iron

twilight switch

Bicycle speaker bag MT6091

super call

Super Simple 1-Wire Adapter

MULTIVOX transceiver schematic

Kinescope protection scheme

Filament Protection Circuit

Surge Protection Circuit

RX-TX Mechanical Relay Switching Diagram for TRCV

Power supply circuit for gas discharge indicators and CMOS microcircuits

Scheme for smooth switching on a halogen incandescent lamp

Diagram of a simple radio station

Backup power scheme

Tremolo scheme

Scheme for doubling the output voltage of the power amplifier power supply

UHF circuit for UW3DI

Elevator control scheme

Antenna rotation control scheme

Circuitry of HV programmers

Circuitry, element base

Schemes for switching on superbright LEDs

The plans don't follow the rules. Operation of transistors at low supply voltages

Control schemes for digital devices

Schemes of chaotic oscillators

Counting command device

Counting-command electronic timer

Ion counter

Shower Water Meter MT1050

Counters

Counting-1

Counting-2

Counting-3: typesetting alphabets

Reading program blocks without a header

Table of European TV satellites

Table for converting channels to the frequency of the first IF of satellite TV tuners

Satellite Program Tables

Timer

Timer - from the calculator

Timer - multivibrator for watering plants with time correction

Timer - clock in a matchbox

Timer 2 sec…3 hour / 300 W

Automatic call timer in educational institutions Shkolnik

Timer for bathroom exhaust fan

Toothbrush timer with emergency light

Timer for soft turning on the tube ULF

Timer for stereo complex from VM-12

Timer for instrument sterilizer

Refrigerator timer

Preset timer

Chinese watch timer

Timer from Electronics 32-05

Timer for digital multimeter

Timer for periodic switching on and off of the load

Timer with short prompts for mode names

Timer with simple controls

Timer Traffic Light

Central Station Timer

Timer Young Toothpick-2

Timer clock

Secrets of transformation

So what is the difference between tube and transistor sound?

Payphone AMT-69 and its modernization

Tachometer

Tachometer for autogyro

low speed tachometer

TV modulator-adder US-1

TV antenna - VHF antenna

Solid State Relays KR293 Series

TVZ lived, is alive and will live

Tweaking the amplifier

TV converter

TDKS-19 in an imported TV

Text dot matrix LCDs

Text Dot Matrix LCDs (02

TV-video complexes of color image

Horizont CTV-672/VD color TV video complexes

Television antenna decimeter range

TV antenna meter range

TV test chart 0249

TV indoor 12-channel antenna

TV delay line on switched capacitors

TV antennas

Television antenna amplifiers

TV modulator with frequency synthesizer

TV filter

TV - calibrator

TV - monitor

TV - VHF receiver

TV Horizont 51CTV510

TV Horizont DTV-700

TV Horizon 42CTV-510

TV Horizon 51/54CTV-601

TV doesn't interfere

TV ULPTSTI-monitor

TV Electronics - 409 will also serve in the transition to digital television

TV display

Monitor TV…and PC Power Supply

TV oscilloscope

Телевизоры Horizont 51/54CTV-601/602/603

TV Horizont-670

TVs. Looking inside

Telegraph manipulators

Telegraph transceiver generator

Telegraph heterodyne

Telegraph key with alternator

telegraph processor

Telegraph Processor BEF-1803

telegraph radio transmitter

telegraph simulator

Telegraph simulator for learning Morse code

Telecommunication relays

Do-it-yourself TV transmitter

TV receiver as a frequency standard

Telesystems - POV

teletest

TV set 714/754 MHz

Phone - on KR1008VZH1

Phone + walkie talkie

Phone Panasonic KX-T2342

Phone without wires

Phone in your house

Phone director-secretary

telephone set-top box

Phone to tape adapters

Telephone answering machines

Telephone answering machines. Spoken knots

Telephone answering machines. Speed ​​controllers

Telephone answering machines. Electrical circuits of magnetic recording

We repair telephone sets with caller ID ourselves

Telephone answering machine

Telephone set from available parts

phone bug

Telephone interface

Telephone interface to ARS Viliya and Altai AS-SP

Telephone informant

Telephone quasi-jammer

telephone hub

telephone limiter

telephone transmitter

telephone secretary

Telephone secretary answering machine

Phone server Phone PLUS 1992

Phone server based on Z80 processor

high resolution phone amplifier

handset

Handset - do-it-yourself

For those who collect AON

Tone block with a wide range of adjustment

The Dark Sides of Some Axioms of Electrical Engineering

Temperature compensation in amplifiers based on NAND elements of microcircuits of the 155th series

temperature lock

Thermal distortion in HiFi amplifiers

Theremin

Theremin from illiquid assets

Theremin, or theremin on a microcontroller

Sauna temperature sensor

Thermal sensor on Atmega8A. Option 1

Aquarium thermometer

Thermointegral soldering iron controller

Thermometer based on the diagram of the display and control device for the power supply

Thermometer with two sensors DS18B20

Thermometer with 0,1 degree measurement accuracy on PIC16F628A

Thermometer-voltmeter with warning system

Thermometer-thermostat with original control

Thermal difference controller on KR1878BE1

Temperature controller

Temperature controller with isodromic control law

Temperature controller for home appliances

Temperature controller for incubator

Thermostat for soldering iron - in plug

Cellar thermostat

Basement thermostat

Thermostat for solid fuel boiler

Temperature controller for storing vegetables

Temperature controller from the microcircuit of the 155th series

Thermostat with automatic protection

Thermostat with temperature indication

Thermistors

Thermal relay

Thermal relay 0…150 °С

Thermal relay breathed new life into an old refrigerator

Thermal stabilizer for aquarium

Heat stabilizer for household incubator

Thermostat for incubator

Thermostabilizer for small-sized incubator

Thermostat on DS 1620

Thermal stabilizer with advanced features

Thermostable oscillator with interruption

Thermostat - clock with two time zones and distribution of the load on the power grid

Thermostat for GPA

Thermostat on the balcony

Thermostat on thermocouple and MAX6675 module

Thermal cabinet

Tesla, Nikola

Real ham test

RAM test for RK-86

Bipolar transistor and diode tester

Tester in a matchbox

Capacitor tester

Tester for online testing of galvanic cells

Zener tester

Transistor Tester

UZCH IC tester

Logic IC tester

Logic Tester

Chip tester

MOS transistor tester from the BM4511/NM4511 kit

IR Remote Control Tester

Zener tester

Electrolytic Capacitor Tester

Testing a soldering iron on ionistors. Part 1

Test load block BP ATX

Test interrogator-monitor for NEC Projector VTxx

Safe Operation

EME communication technology

Technical data of magnetic loop antennas

Technical means and security systems

Technology Tips

Technological advice, or exchange of experience

Technology of vibrotransport sorting of bulk materials

Electroplating technology

Washing machine anti-calc technology

Technology for protecting electrical equipment from leakage currents

Technology for modifying the physical properties of water

Technology for modifying the physical properties of hydrocarbon fuel

Phone Battery Charging Current Optimization Technology

Technology of organization of the electroplating section

The technology of transferring a picture from a computer to a printed circuit board

Underground power search technology

Pipeline regeneration technology

Earthquake registration technology

Battery recrystallization technology for long-term storage

Technology to reduce emissions of hydrogen sulfide compounds in batteries

Storage battery jet technology

Typical circuit of DC/DC converter with galvanic isolation on TOPSwitch

Thyristor converter 1 - 3

Thyristor power controller

Thyristor power controller with soft start 1000 W

Domestic thyristors

Bias currents for lighting

current comparator. A solution to the problem of leakage in the hood-position sensor circuit

Tone generator - a device for testing a telephone line

Loudly compensated volume control

Fuel cells are the batteries of the future

Braking of a three-phase electric motor with a short-circuit rotor

Toroidal Transformers for PCB Mounting

Toroidal transformers and inductors for communication and data transmission devices

torpedo war

He is not a radio engineer who is not a radio amateur

Starting point

The exact time on the radio

Accurate AC to DC conversion

Etching the printed circuit board afloat

PCB etching

Etching boards with aeration

The Tragedy of the Last Cold War Mastodon

IF path of foreign TVs

Transistor-tube amplifier output stage

Transistor analogue of a zener diode

Transistor key with current protection

Transistor receiver VEF-202

Transistor fan speed controller

Transistor UMZCH on the way to perfection

Class AB transistor power amplifier Musatoff PA-14

Transistor power amplifier of the radio station of the first category

transistors

Transistors KT732A, KT733A

Transistors KT872 and KP501, diode KD409

Domestic transistors

Transit RT-M

Transit RT-M2

Transit RT-S

Transverter 144/28 MHz

430-435 MHz transverter

Transverter set-top box 144/28 MHz

Transceiver ALINCO DR-430

Transceiver LARGO-91

Transceiver Albatros

Transceiver Albatros 160

160 m transceiver

Transceiver RVP-94

Transceiver prefix for R311

Transceiver prefix to the radio receiver Katran (R-399)

Transcoder PAL-SECAM

Transmitter on the chip rfPIC12F675F

Transformer in 5 minutes

Transformer modules

Transformer modules for S-interface

Transformer ULF

Transformers

Transformers for ADSL interface

Transformers and modules for U-interface

Transformers with Common Mode Chokes for EMI Suppression

Alarm notification for heating pipes

Trill instead of ringing

Trainer Left or Right

Third channel UMZCH + karaoke converter

The third hand of the radio designer

Third hand+A13904 - tweezers

Three-way intercom

Tri-band M-antenna

Tri-band double square W1HXU

Three-channel function generator

Three-band tone control

Tri-limit digital voltmeter

Three-wire headset to the radio station

Three-phase 200 Hz out of 50 Hz

Three-phase motor in a single-phase network

Three-phase low-frequency PWM heating element power controller

Three-phase transformer in a single-phase network

Three-phase electric motor in a single-phase network

Three-tailed and Serpent Gorynych: antennas for the medium wave range of 200 meters

tricolor thermometer

Three overnight options

Three phone locks

Three timers in one chip

Trigger on optodevices

Trigger on transistor optocouplers

Triggers

Schmitt triggers

Trinistor regulator

Tee 220V + 2 USB MT4012

Handset of the VER 2.0 radiotelephone in the housing ... from a microcalculator

Signal tuning

Do you still have a thermometer?

Respect! Gavoryts Minsk!

Increasing the depth of tone control with a parametric equalizer

Increasing the Ribbon Threading Speed

Increasing the life of the kinescope

Increasing the life of an incandescent lamp

Increasing the number of received channels

Increase in the number of programs in SVP-4-5

Increase in the number of programs in the SVP-4-5 selector

UHF for radio receiver on KHA058

UHF for MW receiver

UHF for TOLI

UHF for FM receiver

Carbon microphone

Remote COM port over TCP/IP

Remote control of the TWAIN scanner and printer from a browser or... Xerox emulator WEB server over TCP/IP

Let's hit the LED...

Reducing the cost of reworking computer power supplies to power imported transceivers

Convenient phasing of the secondary clock

Convenient assembly tool for the radio amateur

Convenient oscilloscope probe

Fishing rod - business person's phone

Protection unit on self-restoring fuses

Radio protection unit

Sound accompaniment node

Seconds indication unit

Pump control unit

Narrow band LC filter

Narrowband FM receiver AK9401 for radio stations

HF transceiver nodes

UZCH K174UN14A

UZCH on ... volume control

UZCH on AD822AN

UZCH based on A2030

Ultrasonic spatial sound

Antenna angle indicators

Hang glider or autogyro speed indicator

VHF antenna Kolovorot RD7M

VHF antenna Wave channel

VHF Converter

VHF receiver

VHF receiver SEc-850 D

VHF receiver with extended range

VHF Receiver Speaker

VHF radio microphone

VHF radio receiver on KXA-058

VHF radio stations in trunked radio communication systems

VHF stereo tuner

VHF superheterodyne without GPA

VHF power amplifier UA9UDQ on a GI-7B lamp with transformerless anode power supply

VHF power amplifier UR5YW on ceramic-metal triode GI-7B

VHF power amplifier based on ceramic-metal triode GI-21B

VHF power amplifier on transistor KT931

VHF FM radio microphone with frequency multiplication

VHF antenna for local communications

VHF-IP-2A: conversion to FM band

VHF Converter

145/70 MHz VHF converter

VHF converter with quartz stabilization

VHF converter to radio

VHF receiver

VHF receiver on a U2510B chip

VHF set-top box to a three-program loudspeaker

VHF radio microphone

VHF-FM radio microphone

Shortened antenna at 160 m

Shortened double square 7 MHz with active power supply

Will an amplifier steal virtual depth?

Taming Resonance

Does an attenuator improve dynamic range?

Improved Receiver Selectivity

Improving the selectivity of the R-326 radio receiver

Improving the quality of printed circuit boards

Improvement Kg generator SP

Improving the parameters of tube radios

Improved RTTY performance on the ZX-SPECTRUM

Improving TV reception at a distance from transmitting stations

IR Radar Performance Improvement for Garage Parking

Ultrasound against rodents

Ultrasonic Rat Repellent Generator

ultrasonic range finder for car

Ultrasonic Distance Sensor URM37

Ultrasonic Alarm Sensor

Ultrasonic Object Motion Detector

ultrasonic dog whistle

High accuracy ultrasonic level transmitter with temperature compensation

We reduce appetite

Reduction of radiation from cable TV networks

Reducing losses in a transformerless rectifier

Fan Noise Reduction

UMZCH

UMZCH D-class 2x20 W for a budget multimedia player

UMZCH in class AD

UMZCH for the player

UMZCH for desktop

UMZCH on SIT devices

smart chandelier

Voltage multipliers

Multiplier - air ionizer

voltage multiplier

Smart House

Do-it-yourself Smart Home, part II or 15-channel controlled dimmer

Smart faucet will save country water supply from freezing

UMS 7 at home

UMS with photodiode

UN 9/27-1,3 in ULPT

Universal 4-bit microcomputer KF1869BE2 for household equipment

Universal protection for telephony equipment

Universal switching board

Universal radio signaling

Universal IR remote control system

Universal Program Security System - Zero String Method

Universal touch control system

Universal TV Antenna

Universal digital frequency scale

UEIT universal electrical test chart

MP724 Universal USB Device

Universal Antenna Matching Device

Universal security device

Universal security alarm device

Universal signaling device

Universal automatic control device

Universal notification device

Universal fire and security alarm device

Universal acoustic sensors

Universal indicators of radiation and their application

Universal single-chip four-bit micro-computers and peripheral LSIs of the KR/KA1820 series

Universal voltage stabilizers on ICs

Universal watch-timer

Universal 8-channel LED dimmer Night sky

Universal machine running fire

Universal power supply

Universal bicycle travel device

Universal rectifier

Universal Generator

Universal test television signal generator

Universal low frequency generator

Universal Probe Generator

Universal frequency divider

Universal clip

Universal SWR meter

Universal transmitter for resistance sensors

Universal Measuring Instrument

Universal pulse microprocessor metal detector BM8044 - Koschey 5IM

Universal Power Supply

Universal Half-Bridge UPS Controller

Universal kitchen timer

Universal logic probe

Universal logic probe with pulsator

Universal metronome

Universal microprocessor digital frequency meter

Universal low-frequency transceiver path

Universal Parallel Interface for ZX Spectrum

Universal preamp and distortion for electric guitar or violin

Universal probe

Universal probe for checking the suitability of transistors

Universal programmer ChipBoom

Universal voltage regulator and charger for a car

Universal Voltage Stabilizer

Universal daily programmer

Universal Amplifier

Universal low frequency amplifier for VHF radio stations

Universal photometric device (UFP). Refinement

Universal digital instrument

Universal digital tachometer

Universal frequency modem 300/600/1200/2400/4800 baud

Universal four-channel machine based on the NS182.2 timer and NM4413 high-current load expander

Universal cord

Universal cord for VCR

Unipolar connection of service telephone devices

Unipolar logic ICs

Unified transformers

Unified TA transformers

Unified SCART connector

ULF for EMI Matador TO 200-6

ULF with non-standard use of radio tubes

ULF with direct filament output

ULF with control on the 2nd grid

ULF with control over the 2nd grid. Part 1

Control of 3-phase motors using power electronics in a single-phase network

RF modulator control on TA1297 and MC44BS373CA

Fan control

Motor control

Cell phone control

Actuator control by several sensors (switches) located in different places

Phone code control

Control of the STC-2901 anti-vandal dome camera via RS-485

Chandelier control by two wires

Seat heating control in a car

Lighting control from multiple locations

Directional Antenna Rotation Control

Mitsubishielectric EW270U projector control without... programming

Control of the radio path of the radio RX-ES20 from the computer

Network load management by TTL chip

Battery operated tricycle

Control of stepper motors with a computer

Controlling electrical appliances with a TV remote control

Controlling the cooler

Controlled radio point

Controlled switch for the Sokol SHC-15 system

PWM controlled based on AT90S1200 microcontroller

Simplification of the radio receiver with FM, FM based on blocks from old TVs

Simplification of the scheme of a chaotic self-oscillator for communication systems on chaotic carriers

Simplified calculation of a transformerless power supply

UPS-2 - universal communication device

URAL with differential capacitor

Lessons from the Cataclysm in Haiti

Amplifiers

D-Class Amplifiers

Amplifiers for microphones in TA

Amplifiers for telephones

Power Amplifiers

Power amplifiers for radio communication on HF and VHF

Transistor audio frequency power amplifiers

Audio frequency power amplifiers on vacuum tubes

FET Power Amplifiers

Low Frequency Amplifiers

Low frequency amplifiers from MASTER KIT kits

Lamp low frequency amplifiers

Receiver R250-M hereo signal amplifiers

Amplifier - corrector

Complementary FET Hi-Fi Amplifier

Amplifier in PC power supply case

playback amplifier

Playback amplifier for tape recorder

Playback amplifier on K548UN1

Amplifier range 430 ... 442 MHz power 58 W with overload protection

Headphone amplifier AVILA1308D

Headphone amplifier HA-1

Speakerphone Amplifier

Amplifier for pulsed excitation of microwave generators based on Gunn diodes

Amplifier for stereo phones

phone amplifier

Amplifier for ultrasonic radar

UHF amplifier with automatic stabilization

UHF amplifier ... from SK-D-1

High quality tape recorder recording amplifier

Recording amplifier of a modern tape recorder

Audio Frequency Amplifier for EMP

AF amplifier for direct conversion receiver

phone amplifier

Amplifier

SE Power Amplifier

Class A Power Amplifier with Super Fast FOOS

Power amplifier VEBR

Power amplifier for car radio

Power amplifier for radio stations such as Hummingbird

Power amplifier for MW

Power amplifier for MW radio station

Power amplifier for color music devices

Audio frequency power amplifier D-class 2х210 W with expansion up to 6 channels

AF power amplifier

Power amplifier and power supply for a personal radio station

HF Power Amplifier Retro

1,8 MHz power amplifier for R-76M2

FET Power Amplifier

Power amplifier with power supply

Power amplifier CB

TV transmitter power amplifier with separate amplification of image and sound radio signals

Amplifier on IC K284UD1

Amplifier on lamps 6Zh8, 6A7, 6P36S

Secondary emission tube amplifier

Amplifier on the A2005 chip

Amplifier on TANs

Amplifier not only for the musician

Low frequency amplifier 2x22 W (TA8210AH/AL, auto)

Low-frequency amplifier on radio tubes

High Power Low Frequency Amplifier

Bass amplifier for a car with an on-board network voltage of 24 V

500 kHz IF amplifier with 0,2-1-3 kHz bandwidth

IF amplifier in UW3DI

An amplifier with a beard, but ... A popular audio frequency amplifier circuit

Amplifier with electronic control

Amplifier of signals of the range of meter and decimeter waves

Amplifier stages with frequency response correction

Limiting amplifier in a portable radio

1 to 4 video splitter amplifier

Speed ​​up the setup process

IC symbols

Conditional abbreviations for the names of foreign companies

Rechargeable Flashlight Improvement

Power Supply Improvement

Improvement of the pump control unit

Improvement of the vernier of the radio receiver Ishim 003

Improvement of the tape recorder Orel 101-01 Stereo

Improvement of the H313 oscilloscope

Improving the receiving path of the transverter set-top box

Improvement of the radio designer Fon-6

Improvement of the radio receiver Ishim 003

Improvement of the R-326M radio receiver

Improvement of the stereo amplifier Vega 50U-122S

UW3DI Transceiver Improvement

Improvement of the Electrostimulator for fish

Advanced burglar alarm with cell phone

Advanced PC Drive Controller Circuit Vector

Advanced Electronic Vehicle Ignition System (ESIA)

Advanced BTPN

Advanced GIR

Advanced UHF converter

Improved melodic call

Running light installation

Installation of remote control in ZUSTST

Installation and pre-configuration

Installation of MSN-501 in a third generation TV

Installation on the R-250M2 radio receiver of the vernier device from the R-311 radio receiver

Falling snow setting

Installation of TV antennas on the loggia

Installation contact device

Resilience of amateur equipment

Eliminate radio fading

Elimination of contact defects

Elimination of spontaneous switching in SVP-4-5

Background elimination in AF amplifiers

Eliminating the background of the radio network in imported phones

Eliminate clicks

Eliminate clicks when switching equipment on and off

XNUMXD video sign generation devices

Devices for diagnosing biologically active points

Devices for programming microcontrollers MSP430Fxxxx from Texas Instruments

Devices for protecting computer networks from static electricity and lightning discharges

Motor protection devices against open-phase operating modes

Control devices in automation and telemechanics schemes

TV signal summing devices

Shift-Light device that prompts you to shift into higher gear

Avitar device in ULPCTI

TV automatic shutdown device

Automatic dialer

Automatic dialer CHANCE 01

Automatic dialer

Device for automatically disconnecting radio equipment from the network

Device for automatic reduction of the open-circuit voltage of the welding transformer

4 in 1 Automatic Heating System Control Device

Device Autorhythm for stage

Device Running lights on LEDs

Uninterruptible power supply

Number 8 blocking device

TV studio sign input device

Visual indication device Shift-Light

UHF range program selector

Current time display device

Device for extracting a percussion instrument from an audio signal

Extension telephone caller

Decoding device SIGNAL UD-1

Remote control device

Device for automatic recording of telephone conversations

Device for wireless switching of audio components

Device for wireless transmission of analog signals

Device for vibroacoustic massage

Battery recovery device

Device for remote measurement of electrical resistance via a two-wire communication line

A device for recording telephone conversations on a tape recorder

Device for charging car batteries

Phone and modem protection device

Device for measuring low resistances

Magnetic field treatment device

Device for magnetizing magnets

Device for magnetizing permanent magnets

Device for tuning radio equipment

Device for tuning amplifier-correctors

A device for facilitating the inclusion of a kinescope

Device for treating seeds with an electromagnetic field

Device to restrict outgoing phone calls

Winding phasing device

Device for soft start of the load in the electrical network

Device for maintaining air humidity

Device for searching biologically active points and influencing them

Device for testing IR remote controls

Device for testing fluorescent lamps

Device for testing microcircuits K565RU5 / RU6

Operational amplifier tester

Spark plug tester

Device for checking telephone sets

EPROM programming device

A device for extending the life of the kinescope

Device for reversing a single-phase capacitor motor

Device for adjusting the depth of the stereo effect

Stripping device SOUS

Device for telegraph communication by wire

Telephony device

Device for telephony by wire

One button load control device

Device for color and musical accompaniment

Stationary telephone call duplication device

Pulse delay device

Battery charger and charger

Mains residual current device

3-phase motor protection device

Protection device for 12/220V converter

Protection device for AC and DC circuits

Device for protecting the apartment from power surges

Incandescent Lamp Protection Device

Lamp filament protection device

CRT filament protection device

SOKOL UZP-1F Hazardous Voltage Protection Device

Surge protection device

Electricity consumer protection device

TV fire protection device

Mains protection device

The device and features of plasma panels

Installation and repair of imported phones with additional memory

Display and control unit for power supply

Force field display device

Karaoke device

Battery monitoring device

Attendance control device using an electromechanical counter

Device for monitoring the operation of a 3-phase electric motor

Load condition monitoring device and its voltage sensor

Level control device

Monitoring, control and protection device

Electronic clock correction device

Music synthesizer device

Musical accompaniment device based on electronic circuit and computer

TV access control device

USB Gadget Debugging Device

Security device GSM-autonomous BM8038

Burglar alarm device

Personal device

Soft on/off device for incandescent lamps 150 W/220 V

The device for smooth extinguishing the light in the car

Device for smooth extinguishing of light in the cabin with tach-dependent illumination of door handles

The device for smooth ignition and extinction of light in the car

Complete protection device for lighting lamps

Device Turn up the volume

Device Turn up the volume (RL, No. 12/2011, p. 36-40)

Chip Checker

DT checker

Psycho-emotional correction device

REHA radio communication device (type D)

NiCd battery discharge device

Discharger for Ni-Cd and Ni-MH batteries with discharge time control

Frequency detuner for Katran

RAM Refresh Device

Dimming device for incandescent lamps 220 V / 300 W

Reamer adjustment device

Phone call indicator light

Device for signaling overheating and tightened handbrake

Signaling device type SIGMA

Counting signaling device

Counting signaling device (RL, No. 3/2010, p. 25-27)

PC CPU temperature reducer

Electronic watch thermal protector

alarm device

Control device

Vehicle cooling fan and intake manifold heater control device

Access control device

Control device for the ignition of lamps for signboards, advertising

Lighting control device

Polarized Remote Switch Control Device

Vehicle brake light control device

Flash control unit

Shmel device - device for reflexology

Energy recovery

Clarification of the wiring diagram of the Drozdov transceiver

Iron with sound indication of heating

When you leave, turn off the light

UCP+ on KM1816BE31

telegraphic alphabet teacher

Phase Locked Loop or PLL in Pictures

Phase shifter for power amplifiers

Speech phase limiter

200 W phase power regulator in mains plug

Phase compensation circuits in communication equipment

Phase meter

Phase modulated triangular voltage generator

LED headlight

Beans for every taste

Farm for directional antenna

Ferrite antenna for MW and LW

Festival of Science - 2013

feeder separation filter

Fixing radio equipment on horizontal surfaces

Fixed and broadcast satellite communication systems

Filter - mixer DMV + MV

Filter - matching device

High pass filter

Filter for measuring Kg

Filter for AON power supply

Low pass filter of radio receiver Leningrad

Filter by TVI

Filter modem for packet communication

filters

50 MHz filters

Filters on TTL chips

Filters out of order

ALTERA Expands FPGA Capabilities

Phytolamp

Flashlight - a bug from a stepper motor

Mouse flashlight

Flashlight with white LEDs

LED flashlight

Super VHS video recording format

Formation of the frequency response of an open speaker, taking into account the acoustics of the room

Formation of the screensaver of the TV program

Arbitrary Pulse Shapers

Pulse shapers with adjustable duty cycle and their application

Powerful pulse shapers

Pulse sequencers of specified duration and duty cycle and their application

Square waveformers

Bipolar voltage shaper

High voltage pulse shaper

Reset pulse shaper

Network pulse shaper

Stereo sound test signal generator

Shaper of the optimal ignition timing

Burst shaper

PC Signal Conditioner ZX Spectrum

Three-level pulse shaper SSC

Frequency driver 50 Hz for timer

Photo barrier for barrier

Photo alarm Dawn

Photodiodes

photorelay

photo signaling device

Photo gallery - a toy for adults

Photo shooting range, highly sensitive photo relay

Phototransistors

Photoelectric isodromic temperature controller from obsolete elements

Photoelectronic hitchhiking

Photoelectronic signaling device

FSE + programmer

Functional features of Horizon TVs

Functional units of REA

function generator

Function generator on a single CMOS element

Functional composition of TTL/CMOS-series 74LS/ALS/HC/HCT

XA994. AM transmitter

Chaotic barrier oscillators

Chaotic self-oscillator based on an electronic analogue of inductance

Chaotic autodyne AM receiver

Chaotic mode of operation of an oscillator with two linear reactive elements

characteriograph

Characterograph could be better

Characteristics of Graphic LCD Modules

Characteristics of sign-synthesizing LCD modules

Characteristics of television systems. Channel Information

Typical problems of telephone servers and electronic telephones

Chemical current sources for powering electronic structures

Tricky Button for Linux Microcomputer

Cold drying shoes. Space technologies

Chronicle of modern radio warfare

C20-05 without batteries

Color lamp on modern LED lamps Relax

Color computers Radio-86RK

Color TVs of the 6th generation Vityaz

Color marking of p / p devices

Transistor color coding

Power color indicator

Color codes of foreign resistors and capacitors

Color dynamic indication in GUI

Color dynamic measuring devices

Color music on microcontrollers DETKA-001

Color-music device on fluorescent lamps

Color Musical Medallion Cat's Eye

Color controlled light source

HF Transceiver Power Amplifier Bias Circuits

Loop recording/playback in panoramic FFT analyzer with direct access to RTL-SDR

Cyclic timer

Digital-to-analog converters

BURR-BROWN digital-to-analog converters in audio and video equipment

D/A Envelope Generator

Digital-analogue frequency counter

Digital AFC

digital scale

Digital scale - frequency meter

Digital scale for receivers under the letter K

Digital scale of the combined LF-HF generator

Digital scale with static indication

Digital charger

Digital scoreboard for Brain-Ring

Digital power supply voltage control

Digital voice recorder using AVR technology and DataFlash serial memory

Digital frequency relay-filter

Digital FM receiver

Digital PWM controller

Digital S-meter

Digital S-meter Kvant

Digital USB Thermometer/Thermostat MP707R

Digital autoguard

Digital acoustic signaling device

Digital voltmeter

Digital GKCh

Digital two-channel thermostat

digital voice recorder

The BM8021 USB Digital Storage Oscilloscope is the perfect developer tool

USB Digital Storage Oscilloscope BM8021 MASTER KIT

Digital h21e transistor meter

Digital capacitance meter

AC Digital Meter

Digital heart rate monitor

Digital indicator

Digital interface for FT817ND transceiver

Digital radiometer

Digital radio receiver - it's very simple!

Digital reversing multi-position switch

Digital volume and tone control

Digital volume and tone control with LCD

Digital power controller

Digital speech synthesizer

Digital counter

Digital Timer Clock

Digital tachometer

Digital thermometer

Digital thermometer/thermostat BM8037R with adjustable hysteresis from -55°C to +125°C

Digital thermometer-thermostat for car dashboard

Digital thermostat with hysteresis

90W Stereo T-Class Digital Amplifier (Tripath Technology) NT1290

T-class digital amplifier NT1291 (Tripath technology), 2x15 W

Digital frequency counter

Digital frequency meter based on a single-chip microcontroller

Digital frequency meter on a single-chip microcontroller KR1830BE31

Digital multimeters

Maxim digital potentiometers

Digital programmable hearing aids (CA) and charging their batteries

Motorola Digital Signal Processors 56000, 96000

TMS320 Series Digital Signal Processors

Digital signal processors from ANALOG DEVICES

Digital regulators for home UMZCH

Digital comparison circuits

Digital filters

Digital frequency filters

CMU / SDU on a microcontroller

Pinout of common TVs

DSP, part 1,2. Visualization and analysis of registrations of digital oscilloscopes Agilent and Tektronix

DSP Part 3: Tektronix MDO-3102 Digital Oscilloscope Acquisition Support

B/W TV Horizont-606

Jauch Quartz GmbH Watch Quartz Resonators - less is more

Frequency detector on a double-gate field-effect transistor

Frequency modem

frequency dialer

Frequency meter

Frequency meter - attachment to the avometer

Frequency meter - digital scale

Frequency meter - digital scale with liquid crystal display

Frequency meter measures inductance

Frequency meter based on DRM

Frequency meter on a microcomputer. Details and design

Frequency meter on a microcomputer. Measurement order

Frequency meter on a microcomputer. Scheme and principle of operation

Frequency counter on FPGA

Frequency meter with dynamic indication

Frequency meter-digital scale BEF-1801

Frequency meter, capacitance and inductance meter - FCL-meter

Clock in Borland C++ Builder

Clock based indicator

Clock with timer

Clock, stopwatch, exposure meter - according to a single program

Alarm clock with remote control on PIC16F628A

Timer clock

Clock-thermometer on ATTINY15

Clock-thermometer-stopwatch with statistics collection system

Black and white screen...blooming

Four PWM on one microcontroller

XNUMX-input logic analyzer

Four-track - from two-track

Four-channel automatic light effects on the K155RU2 RAM

four channel light effect

Four-channel ULF

Quadruple SMD Transformer Modules

XNUMX-tube battery broadcast receiver

Four-tube receiver ARZ-54

Four-digit counter with programmable actuator

Fourteen-tube radio receiver Belarus-53

FM generator for the range of 90 ... 110 MHz

FM transmitter

VHF FM transmitter

FM radio microphone

FM transceiver 10m

FM telephone line translator

FM generator

FM cable TV decoder

What threatens us when refueling?

What everyone needs to know about the features of mobile communications ...

What's new in Individual (amateur) broadcasting

What will the indicator show?

What is nanoelectronics?

What is a frequency dialer?

What Where? When?

Sensitive comparator of the brightness of objects on the monitor screen as a detector of changes in the controlled environment

Stepper motors and their control

Pedometer with adipose tissue analyzer MT4060

Chess clock for playing Chess-Timebreak tournaments

Six-lamp radiola Minsk 58

Six-tube radiograms and the Daugava receiver

Six-tube receiver VEF M-557 (VEF-super M-557)

Six-tube receiver VEF M-697

Six-tube radio receiver VV-662 (Punane-Rat VV-662)

Six-tube radio receiver Baltika and its modernization

Six-tube radio receiver Riga-6

Six-tube radio Rodina-52

Six-tube superheterodyne receiver of the 2nd class 6N-1

PWM power controller

Broadband INVERTED V at 80 meters

Broadband Antenna

Broadband antenna 1,8-10 MHz

80 m broadband antenna

Broadband antenna for 145...149 MHz from industrial design

Broadband UHF ring antenna from a magnetic disk

Broadband loop antenna for low bands

Broadband diamond-shaped UHF antenna

Broadband helical antenna

Broadband TV antenna for UHF

Broadband Antennas

Broadband Active TV Splitter

Broadband amplitude modulator

Broadband Antenna Amplifier

Broadband TV Vibrator

Broadband preamplifier

Broadband sine wave generator

Broadband transformer with a transformation ratio of 3/2

Broadband power amplifier

Broadband power amplifier with automatic current control

Broadband Power-Controlled Power Amplifier

Broadband phase inverter for measuring generator

Shi-stabilizer on the timer KR1006VI1

CMOS encoder

Voice Encoder

Encoder. Decoder.

Portable TV setting scale

R and C Rating Scale

School Bel-ring. Electronic game

The cord is always at hand

Shock therapy for photoresistor

Case putty

Spies are with us. Hidden Process Detector

Punch for punching rectangular holes in sheet material

Barcode or... Using the DELPHI Language for Small Automation Tasks

Whip antennas

Whip antennas HF and VHF bands

Noise Impedance and SWR Meter

Noise bridge for high frequency measurements

Noise suppressor for tape recorder

Squelch for MW radio

Squelch for MW station

Squelch of a modern stereo complex

Noise in amplifiers

Shunting the power supply capacitor with a resistor

Bekeshi shields

Stick no problem!

Pencil probe

Probe clamp

Probes on ... hinge

The evolution of the Spectrum platform

Dummy load

Antenna dummy load for launching radio transmitters

Save lamps and electricity

Economical battery charger 7D-0.115

Economic security device

Economic intercom

Economic time relay, security device

Economical power supplies

Economy avometer

Economical light pulse generator

Economic power output indicator

Economic voltage indicator

economical beacon

Economical MW receiver

Economical narrowband FM receiver

Economical direct amplification radio

Economical high power LED luminaire for the ham radio workplace

Economic touch alarm

Economic voltage stabilizer

Economy timer - self-resetting switch

Economic thermostat

Economical heat stabilizer

Economic UCH

Economical digital thermo-hygrometer

Savings for a minibus

Expeditions of the radio club Sporadic in the Elbrus region

Experimental voltage converters controlled by a rectifier

Experimental telegraph micro-transceiver mixer

Experiments with the regenerator

Operation of nickel-cadmium batteries in amateur radio conditions

Operation of nickel-cadmium batteries

Express diagnostics of LDS

Electret microphones

Electret microphone on a phone

electric lighter

Electric or magnetic antenna?

electric potato

Electrical LC filters

Electrical oscillations and their spectra

Electric stunner

Mosquito electric chair

Nasal electric chair

Electric thermometer

Photo lab electrical panel

Electroacupuncture stimulator with ohmmeter

Electroacupuncture stimulator

Electric guitar

Electric guitar from a guitar neck

Electric guitar Piccolo

Electric kettle in the garden

Electromagnet for combination lock

Electromagnetic water treatment

Electromagnetic compatibility of cable and terrestrial TV

Electromagnetic relays and circuits that improve their performance

Do-it-yourself electric musical bell

electric musical instrument

Electric musical instrument - arpeggiator

Electromusical instrument for a beginner radio amateur

Electronics in the toilet

Electronics in the educational process

Electronics for two-year-olds

Electronics KR-02 and Consul

Electronics help the refrigerator

Electronics against mosquitoes

Electronics against barking

Electronic accordion

Electronic Lighter

Electronic star

Electronic Game Drum Machine Master Kit NN111

Electronic game Field of Wonders

Electronic button

Electronic button - 2

Electronic insect trap

Electronic weather station

Electronic mother hen

Electronic forget-me-not for the forgetful

Electronic Nanny

Electronic Nanny on UMS-7

E-mail

Email to SW

electronic siren

Electronic rattle

Electronic equipment. Start

Mini Electronic Drum Kit

Electronic ignition

Electronic ignition with a new way to ignite the mixture

Electronic capacitor ignition (CDI)

Electronic piano NN201 - kit for DIY PCB manufacturing and soldering

Electronic relay

Electronic time relay

Electronic relay on a thyristor-transistor key

Electronic turn relay

electronic ear

Cathode-beam oscilloscope С1-65А

cathode ray tubes

Electronic-mechanical fishing rod

Electronic access control sensors

Electronic keys

Electronic ham radio assistants

Electronic electrician assistants

Electronic relays for minimum, maximum and load current range

Electronic radioactive dust traps

Digital Watch

Electronic clock - thermometer - thermostat - photorelay

Electronic clock with alarm clock

Electronic alarm clock

Electronic clock-calendar-alarm clock with backup power

Electronic autopilot

Electronic accordion, or EMI bass accompaniment

Electronic air ionizer

Electronic ballast for fluorescent lamp

Electronic ballast for fluorescent lamps

Electronic ballast for fluorescent lamps based on the IR2520DS chip

Electronic biolocator

Electronic vernier

Electronic voltmeter for power supply

Electronic voltmeter prefix

Electronic ignition switch

Electronic mass switch

Electronic mass switch on MOS transistors

Electronic light switch

Electronic light switch-regulator

Electronic gong

Do-it-yourself electronic depilator. Modernization

Electronic disk

Electronic choke

Electronic lock with RFID proximity keys

Electronic lock with key

Electronic call

Electronic bell with low voltage power supply

Electronic from ... illiquid

Electronic moisture meter

electronic cactus

Electronic key

Electronic key on substandard CMOS chips

Electronic key for switching with galvanic isolation

Electronic key on IGBT transistors

Electronic key with galvanic isolation

Electronic key with memory

Electronic key with load current regulation

Electronic code lock

Electronic switch

Electronic input switch

Electronic load switch

electronic kitten

Electronic Curvimeter

Electronic metronome

Electronic switch

Electronic program switch for Veras

Electronic fuse

Electronic fuse - current limiter

Electronic vacuum cleaner

Electronic flow meter

Electronic flow meter for internal combustion engines

Electronic Reverb (Echo/Surround Effect)

Electronic volume control

Electronic voltage regulator for car

Electronic knife switch

Electronic stopwatch

Electronic stopwatch, frequency grid generator, calibrator at 1 kHz, 100 Hz

Electronic semaphore

Electronic bite alarm

Electronic wiper

Electronic stand Contact car ignition system

Electronic watchdog on Schmitt triggers

Electronic souvenir

Electronic timer - a universal unit for controlling a powerful load

Electronic timer on the microcontroller

Electronic timer-clock-alarm clock with non-volatile memory and actuator

Electronic tachometer

Digital Thermometer

Electronic thermometer for motorcycles

Electronic thermometer based on DS18B20

Electronic thermometer with LED indication

Electronic temperature controller

Electronic insect exterminator

Electronic level

Electronic filter for car

Power supply of the class-laboratory circle of radio electronics

Power supply problems with the back door

Pulse power supply unit with a constant output voltage of 5 V and a current of up to 20 A

Electric stove in the country

Electric drive for honey extractor

Electric drive for honey extractor with two technological modes

Kuzya electric drive for radial honey extractor

Electric drive Medok for a honey extractor with an electric motor from Gazelle

Electric drive Troika: three technological modes of pumping honey

Electric sewing machine

Conductive adhesive

Power network modems

Power network modems based on transceivers

Electrostimulator of biologically active points

Electrical stimulator for… fish

Muscle stimulator

Pull-Push Electrical Stimulator

Electrostimulators

Electrical stimulators for the selection of bee venom

Electric thermal jigsaw String

Electrophoresis at home

Electroshock protection

Elements of a smart home. Wi-Fi socket

Elements of a smart home. Part 2... or gnaw through VPN tunnels

Elements of a smart home. Part 3... or control Wi-Fi sockets from your applications

Elements of a smart home. Part 4... or voice control of Wi-Fi sockets

EMOS by offset. ten years later

DVR emulator with loop recording from IP camera

PLM emulator

ROM emulators RE128, RE020

Energy characteristics of the ASTRA satellite

Energy saving nano tree

Energy-saving lamps: from imaginary savings to real ones

Energy saving lights last longer

Energy-saving lamp with infrared motion sensor

Epoxy resin for finishing

Effective AGC

Efficient switching voltage regulator

An effective method of excitation of RA

Effective UHF for receiver

I bought a radio station. What's next?

Jadwiga - a device for collecting bee venom

The language of radio amateurs. Types of schemes. Designations of functional units

The language of radio amateurs. circuit diagram

Fair - exhibition of additional education

<< Back

Latest news of science and technology, new electronics:

Artificial leather for touch emulation 15.04.2024

In a modern technology world where distance is becoming increasingly commonplace, maintaining connection and a sense of closeness is important. Recent developments in artificial skin by German scientists from Saarland University represent a new era in virtual interactions. German researchers from Saarland University have developed ultra-thin films that can transmit the sensation of touch over a distance. This cutting-edge technology provides new opportunities for virtual communication, especially for those who find themselves far from their loved ones. The ultra-thin films developed by the researchers, just 50 micrometers thick, can be integrated into textiles and worn like a second skin. These films act as sensors that recognize tactile signals from mom or dad, and as actuators that transmit these movements to the baby. Parents' touch to the fabric activates sensors that react to pressure and deform the ultra-thin film. This ... >>

Petgugu Global cat litter 15.04.2024

Taking care of pets can often be a challenge, especially when it comes to keeping your home clean. A new interesting solution from the Petgugu Global startup has been presented, which will make life easier for cat owners and help them keep their home perfectly clean and tidy. Startup Petgugu Global has unveiled a unique cat toilet that can automatically flush feces, keeping your home clean and fresh. This innovative device is equipped with various smart sensors that monitor your pet's toilet activity and activate to automatically clean after use. The device connects to the sewer system and ensures efficient waste removal without the need for intervention from the owner. Additionally, the toilet has a large flushable storage capacity, making it ideal for multi-cat households. The Petgugu cat litter bowl is designed for use with water-soluble litters and offers a range of additional ... >>

The attractiveness of caring men 14.04.2024

The stereotype that women prefer "bad boys" has long been widespread. However, recent research conducted by British scientists from Monash University offers a new perspective on this issue. They looked at how women responded to men's emotional responsibility and willingness to help others. The study's findings could change our understanding of what makes men attractive to women. A study conducted by scientists from Monash University leads to new findings about men's attractiveness to women. In the experiment, women were shown photographs of men with brief stories about their behavior in various situations, including their reaction to an encounter with a homeless person. Some of the men ignored the homeless man, while others helped him, such as buying him food. A study found that men who showed empathy and kindness were more attractive to women compared to men who showed empathy and kindness. ... >>

Random news from the Archive

Anniversary calculator from Casio 28.09.2015

The Japanese company Casio has announced a premium calculator S100. Its sales will coincide with the 50th anniversary of the manufacturer's release of the world's first desktop calculator with built-in memory.

The Casio S100 features an aluminum alloy chassis, a high-contrast anti-glare LCD display, and V-shaped buttons that won't rub off.

The device is powered by a solar battery, which, according to the developers, will provide the calculator with autonomous operation for seven years. The device turns off automatically if no key is pressed for six minutes.

The physical dimensions of the product are 183,0 x 110,5 x 17,8 mm, weight - 250 grams. This product will be released in a limited edition - about 5 thousand copies.

Sales of the Casio S100 in Japan will begin at the end of September 2015. The cost of the anniversary calculator turned out to be rather big - $225. For such a price, you can buy a good smartphone, equipped with much richer functionality.

Other interesting news:

▪ Smart surveillance camera with tracking function

▪ Display for the blind

▪ Shortest travel mechanical switches

▪ Acoustic control in the nanoworld

▪ magnetic painting

News feed of science and technology, new electronics

 

Interesting materials of the Free Technical Library:

▪ section of the site Household electrical appliances. Selection of articles

▪ article I don't expect anything from life. Popular expression

▪ article When did the first submarine appear? Detailed answer

▪ article Cayenne pepper. Legends, cultivation, methods of application

▪ article DTMF standard number identifier. Encyclopedia of radio electronics and electrical engineering

▪ article Programmable frequency synthesizer. Encyclopedia of radio electronics and electrical engineering


All languages ​​of this page

Home page | Library | Articles | Website map | Site Reviews

www.diagram.com.ua

www.diagram.com.ua
2000-2024