Free technical library. Articles from Radiomir magazine, 2011

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Contents of journals with annotations / Journal Radiomir

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Alphabetical list articles with annotations, from journals published in 2011 in the journal Radiomir:

10 kW SMPS for concert amplifier

3D TV

4 step alarm

5V SMPS

LiPol batteries to power the flashlight

VirtualBox: first acquaintance

Automatic light switch on one relay

Automatic change of volume and reduction of current consumption in standby mode

staircase lighting machine

car flasher

AM radio microphone

Electrosmog analyzers

Twin Head Speakers

Ah, that cruise control

Chokeless power supply for fluorescent lamps

Non-contact control of power circuits

Wireless remote control

Transformerless power supplies

Transformerless source at KRENK

Power supply for multimeter DT-182

Baby, you can't!

Vibrotransport sorting of bulk materials

4 output video splitter

What to wear equipment

Recovery of acid batteries by cyclic current

Insert instead of a battery in the memory

The choice of capacitors for IP

High frequency cable switch

Silver ion generator

Probe Generator

Talking water sensor

Hall effect current sensor

Reduced Power Push-Pull Inverter

IR detector

home intercom

Home theater on your own

home lighting

[1] [2] [3] [4] [5]

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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 ... >>

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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

Indoor positioning technology 06.02.2014

Prima Research has patented a technology that allows you to track any radio-emitting device in three dimensions, such as mobile phones, tablets, RFID tags or computers.

The problem of navigation inside buildings, tunnels and other spaces closed to GPS signals is very relevant in the light of the spread of new services and geographic information systems. Most existing navigation technologies operating in such conditions are designed to work in two-dimensional space, that is, with conventional two-dimensional maps. This is usually sufficient for most tasks. However, inside buildings and other enclosed spaces, XNUMXD navigation is required. In addition, the passage of high-frequency signals is difficult, and reliable positioning is a difficult problem.

Prima Research's new technology enables highly accurate navigation with a minimum array of 4 synchronized receivers, a reference receiver, and an appropriate signal processor. The receivers form a tetrahedron that tracks the movement of any electronic radio emitting devices and determines their location. In small volumes, such as a single building, the positioning accuracy is very high and can be less than 1 cm. By increasing the network of receivers, it is possible to expand the observed space to infinity.

The advantage of the system is that it is able to detect any device without the need to install software on it. Thus, the system receives information about the location of the device, but not information about its owner, while maintaining privacy. The Prima Research navigation system can detect a mobile phone in a passing car or a person with an RFID tag entering a room, but the system does not receive the person's phone number or identity.

The unique digital sequence assigned to a new device is arbitrary and does not correlate with any personal information. From a legal point of view, Prima Research's new navigation system does not pose any problems because it does not work with confidential information and thus is not subject to relevant legal restrictions.

Because Prima Research's signal processor can work with any communication network, WiFi, 3G, 4G/LTE, unlicensed spectrum, etc., navigation can be provided for any device. This is critical for commercial services, law enforcement, emergency services, and other applications that need to work with as many devices as possible. Prima Research navigation avoids compatibility issues, potentially expanding the scope of this technology.

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