Free books, magazines, collections published in 2003

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Content of books and magazines / Year 2003

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100-watt transistor UMZCH

Dedicated to the 100th anniversary of the birth of E. Krenkel...

10 amp 17 volt switching regulated power supply for powerful subwoofer

10-watt tube UMZCH with an output stage on pentodes according to a little-known single-coupled circuit

1296 MHz is very easy!

12-channel resonant indoor TV antenna

14-bit ADC with 80 MT/s performance

15-watt push-pull UMZCH on ECC99 + VV30

15th international exhibition Productronica-2003

16-bit microcontrollers with built-in flash memory

16-bit micropower ADC

16-bit ADCs with a performance of 1 MSPS in CYGNAL microcontrollers

193PTs7 - frequency divider with variable Kdel

20-watt bipolar-field UMZCH class A

220 years of electric aircraft, or the paradoxes of aeronautics

24-bit audio DAC with S/PDIF input

Wolfson Microelectronics WM24 8740-bit sigma-delta stereo audio DAC

Daniel David's 25-watt tube UMZCH with an original input stage solution that provides higher linearity than SRPP

300 years of St. Petersburg

30-watt transistorized UMZCH with optimal frequency compensation and reduced dynamic intermodulation distortion

33 devices on the KR1436AP1 chip. Koltsov I.L., 2003

3-band (10, 15, 20 m) spider directional antenna

40-watt UMZCH on IC STK083

45-watt classic transistor UMZCH

50-watt UMZCH on Tesla bipolar transistors

60W DC/DC Converter 12V to AC 230V 50Hz on HEXFET IRF450

May 7 - Day of Radio, Television and Communications Workers

75 years ago in Kazan

AC/DC-, DC/DC-converters of the LPS/LPQ110 series with an output power of 80-110 W

AC/DC-, DC/DC-converters of E-TORZO, D-TOP60/120 series

HPS3KW AC/DC modules for creating a voltage source with an output power of up to 18 kW

AMD Athlon and ALi MAGiK 1 chipset

CD-ROM Samsung SCR-3232. Possible malfunctions and ways to eliminate them

CD calculator. Making a calculator for amateur radio calculations using a CD

CD player

CD player with remote control

CQ Machine - CW/SSB digital tape recorder

DC/DC converters from ASTEC

5W DC/DC Converters for PCB Mount

ALT Series DC/DC Converters with 25W and 30W Output Power

AV60C Series DC/DC Converters with 50-150W Output Power

RQS/D Series DC/DC Converters with 0.25W Output Power

APC12 series DC/DC converters with high load current and 92% efficiency

DIRECTFET Sets the Power Quality Benchmark for the INTEL ITANIUM 2 Processor

TigerSHARC DSP with embedded DRAM jointly developed by IBM and Analog Devices

DVD video/photo player

DVD video player

Kiss-Technology DP-450 DVD player with OGG Vorbis and DivX/MP4 support

Xoro HSD400/420 DVD players play Ogg Vorbis audio and XviD and DivX video

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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

Tsunami prediction 24.12.2021

Tsunamis are one of the most dangerous weather events, so any new solution that helps track big waves earlier is welcomed with open arms. Scientists from the University of Kyoto have previously noticed the magnetic field of a tsunami, but only now have they been able to confirm that it can be used to detect an impending danger.

When large waves form in the ocean, an extremely strong magnetic field is created. It is its measurement that is intended to provide information about a possible tsunami, which, in theory, will help emergency services quickly inform people about the upcoming disaster.

To confirm their hypothesis, scientists from the University of Kyoto decided to study two such disasters - the 2009 tsunami in Samoa (a small country in Oceania) and the tsunami that hit Chile in 2010. The study used data from measurements of seabed pressure and magnetic field that were recorded during the formation of large waves. Japanese scientists found a correlation between the two, eventually confirming that magnetic fields appear before sea level changes that can be seen during a tsunami.

For different depths the results will be presented somewhat differently, but it has been shown that over 4,8 km the magnetic field becomes "visible" to the measuring equipment about a minute before the change in sea level.

The change in the magnetic field was so great that waves up to several centimeters high could be detected. This is a big step in the development of tsunami models, which may become even more accurate in the near future. Even a few extra minutes can save the lives of thousands of people.

News feed of science and technology, new electronics

Interesting materials of the Free Technical Library:

▪ section of the site Videotechnique. Article selection

▪ article The Man Who Knew Too Much. Popular expression

▪ article Who are the gladiators? Detailed answer

▪ article Electric winch driver. Job description

▪ article Electronic rod. Encyclopedia of radio electronics and electrical engineering

▪ article Moldavian proverbs and sayings. Large selection

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