Security devices and signaling of objects. Schemes, articles of the Free Technical Library

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Free library / Schemes of radio-electronic and electrical devices

Security devices and alarm systems of objects. Schemes, articles, descriptions

Free library / Schemes of radio-electronic and electrical devices

Security devices and object signaling

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The principle of operation of the wind generator

Section Alternative energy sources. Wind generators are generators of electrical energy designed to convert wind energy into electrical energy. Today, wind turbines are a high-tech product with a capacity of 100 W to 6 MW per unit power. Wind generators of modern designs make it possible to use the energy of even the weakest winds economically - from 2 m / s. With the help of wind turbines, today it is possible not only to supply electricity to the network, but also to solve the problems of power supply to local or island facilities of any capacity. ... >>

Universal surge protector and its design

Section Protection of equipment from emergency operation of the network, uninterruptible power supplies. Having once plugged the VOLNA-K radio receiver and the Pentagon-128 computer with a disk drive and power supply into one network outlet, it turned out that these devices were poorly compatible. All computer equipment gave out a powerful and wide range of radio interference, so the poor WAVE roared almost anywhere in the range from 12 kHz to 23,5 MHz. There were also interferences on TV. All this led to the idea to make and install a surge protector, that. it would not hurt if an amateur radio station was operated, but everything was postponed until later. The spectrum of interference was very wide and the solution came by analogy with the anode choke in the output stage of a tube power amplifier. Having estimated the efficiency [1] for different frequencies, I realized that the filter should be three-section ... >>

Microcircuits. AN7168 Low Frequency Integrated Amplifier

Section Reference materials. The AN7168 is a two-channel low-frequency power amplifier that provides 2x5,8 W output power into a 4 ohm load at a supply voltage of 13,2 V. The circuit has built-in protection and stabilization circuits. 12-pin SIL package allows for a compact, highly integrated device ... >>

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Articles on security devices and signaling facilities

Articles on security devices and signaling of objects; schemes of security devices and signaling facilities; descriptions of security devices and signaling facilities: 154 articles

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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

Digital TV Tuner for Xbox One 21.10.2014

Microsoft Corporation announced the start of sales in several European countries of the Xbox One Digital TV Tuner accessory for the Xbox One game console.

The named device is an external digital TV tuner. It is equipped with a USB port for connecting to a game console, as well as a socket for a coaxial antenna cable. The device gives the game console the functions of working with TV programs without the need for an external TV receiver with an HDMI interface.

After connecting the Xbox One Digital TV Tuner to the set-top box, users will be able to pause the broadcast and then resume watching. In Snap Mode, you can watch the program in a small window, using the remaining screen space for the game. If you have a Kinect controller, voice control for watching TV programs will become available. Finally, it is possible to broadcast a TV program to a smartphone or tablet via a home network.

The Xbox One Digital TV Tuner is currently available in the UK, Germany, France, Spain and Italy for an estimated price of €30.

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