Electrical safety, fire safety. Schemes, articles of the Free Technical Library

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Electrical safety, fire safety. Schemes, articles, descriptions

Free library / Schemes of radio-electronic and electrical devices

Electrical safety, fire safety

We recommend reading in our Free Technical Library:

UHF amplifier from SKD-1

Section Antenna amplifiers. The use of an amplifier with high selectivity can significantly improve the reception of signals from UHF stations, and will also eliminate interference from nearby nearby stations. The SK-D-1 unit, which was used in tube-semiconductor televisions, was taken as the basis. A simple modification of the SK-D-1, which can be performed even by a novice radio amateur, allows you to obtain a UHF signal amplifier with good performance characteristics ... >>

Voltage converter for portable flashlight

Section Voltage converters, rectifiers, inverters. On occasion, I bought a portable LED flashlight (made in China) with a battery inside and with the ability to turn on an incandescent lamp (the ability to switch between a cluster of 8 super-bright LEDs and a 5,4 V krypton lamp). There is also a battery charger inside. In addition, the lamp is combined with a lamp with a 6 W fluorescent lamp, powered by a special voltage converter 6 ... 150 V ... >>

Microcircuits. TDA3810 Surround Processors

Section Reference materials. The TDA3810 microcircuit is designed to work in AF channels of radio and television receivers, as well as in other sound-reproducing equipment. It provides three modes - Stereo, Enhanced Stereo and Pseudo Stereo. In the first, both processor channels have a unit transmission coefficient, that is, they work as voltage followers. In the second, a signal from the adjacent channel is added to each channel in antiphase, which subjectively expands the stereo base. The third mode is designed to convert a monophonic signal into pseudo-stereophonic. The microcircuit is housed in an 18-pin SOT 102 plastic package (Fig. 1) ... >>

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Articles on electrical safety, fire safety

Articles on electrical safety, fire safety; descriptions of electrical safety, fire safety: 56 articles

All articles for an electrician

Regulatory documentation for an electrician

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

Switching stabilized power supply 12V/100A 31.01.2006

BVP ELECTRONICS provided a 12V/100A switching stabilized power supply with a built-in timer/stopwatch, weighing 3,5 kg.

The features of the source include: the presence of a current stabilization mode; current adjustment from 1 to 100A; digital indication of the timer, voltmeter, ammeter; the presence of a sound signal when the timer expires. There are protections against voltage surges in the network, short circuit at the output, overheating of the unit

The source can be used in an aggressive environment (galvanization).

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