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Television, video equipment. Schemes, articles, descriptions

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Television, video equipment

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Mechanical power supply for MP3 player



Section Power supplies. Imagine the situation - a young man in headphones, dancing, talking with his grandfather. Grandfather does not like such disrespect, and he shouts: Turn off the hurdy-gurdy! Why not? After all, the barrel organ is an ancient musical instrument that feeds on the muscular strength of the organ grinder, twisting the handle. ... >>

Programmer Sim Card Reader SOLO GWR



Section Mobile communications. Another design is presented for your judgment - the GWR (Gold-Wafer-Ready) programmer, which combines all the features necessary for flashing gold wafer cards. GWR has two functions: Phoenix interface and JDM programmer ... >>

AC synchronous motors



Section Electric motors. A synchronous motor is a design in which (unlike an asynchronous motor) the rotational speed is constant under various loads. Synchronous motors are used to drive constant speed machines (pumps, compressors, fans). The stator of a synchronous electric motor contains a winding connected to a three-phase current network and forming a rotating magnetic field. The motor rotor consists of a core with an excitation winding. The excitation winding is connected to a direct current source through slip rings. The excitation winding current creates a magnetic field that magnetizes the rotor. The rotors of synchronous machines can be salient pole (with explicit poles) and implicit pole (with implicit poles) ... >>

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Articles on television and video equipment

Articles on television and video technology; schemes of television and video devices; descriptions of television and video devices: 188 articles

 


 

See also: Articles on television antennas

Articles on television antennas; schemes of television antennas; descriptions of television antennas: 56 articles

 


 

Latest news of science and technology, new electronics:

The speech of sperm whales is similar to that of humans 18.05.2024

In the world of the ocean, where the mysterious and unknown coexists with the studied, sperm whales, with their huge brains, are of particular interest to science. Researchers, working with a huge array of audio recordings collected during the Dominica Sperm Whale Project (DSWP) - more than 8000 recordings, seek to unravel the secrets of their communication and understand the structure and complexity of the language of these mysterious creatures. By studying in detail the recordings of 60 sperm whales in the eastern Caribbean, scientists have revealed surprising features of their communication, revealing the complexity of their language. "Our observations indicate that these whales have a highly developed combinatorial communication system, including rubato and ornaments, which indicates their ability to quickly adapt and vary during communication. Despite significant differences in evolution, sperm whales have elements in their communication that are characteristic of human communication," says Shane Gero, a biologist at Carleton University and director of the CETI project. Issl ... >>

Electron spin for quantum information transfer 18.05.2024

The transfer of quantum information remains one of the key tasks of modern science. Recent advances in the use of electron spin to expand the capabilities of information transfer in quantum systems have become very important. Researchers at Lawrence Berkeley National Laboratory are pushing the frontiers of quantum information science by experimenting with the possibilities of electron spin. Electron spin, a natural quantum bit, is a potentially powerful means for storing and transmitting information in quantum systems. Magnon wave packets, collective excitations of electron spin, have revealed their potential to transmit quantum information over significant distances. The work of Berkeley Lab researchers has revolutionized the way such excitations propagate in antiferromagnets, opening up new prospects for quantum technologies. Using pairs of laser pulses, scientists disrupted antiferromagnetic order in one place and simultaneously studied it in another, creating ... >>

Sound-absorbing silk 17.05.2024

In a world where noise is becoming increasingly intrusive, the emergence of innovative materials that can reduce its impact is of great interest. MIT researchers have unveiled a new sound-absorbing silk fabric that promises to revolutionize quiet spaces. The Massachusetts Institute of Technology (MIT) has made significant breakthroughs in the field of sound absorption. Researchers have developed a special silk fabric that can effectively absorb sound and create cozy, quiet environments. The fabric, thinner than a human hair, contains a unique vibrating fiber that is activated when voltage is applied to it. This feature allows the fabric to be used to suppress sound waves in two different ways. The first method uses fabric vibrations to generate sound waves that cover and cancel out unwanted noise, similar to noise-canceling headphones. This p ... >>

Random news from the Archive

The design of the large interplanetary station Psyche is completed 19.07.2020

NASA specialists have successfully completed the design stage of the Psyche automatic interplanetary station, which will explore the metal asteroid of the Main Belt (16) Psyche, and have moved on to the stage of manufacturing all systems and scientific instruments. The launch of the station into space is scheduled for August 2022, and it should arrive at the asteroid in early 2026, according to the NASA website.

The goal of the new interplanetary station Psyche, developed by NASA as part of the Discovery program, was the asteroid (16) Psyche, located in the Main Asteroid Belt. It belongs to the spectral class M and contains a lot of metals such as iron, nickel, gold and platinum. This is one of the heaviest asteroids known today, its mass is approximately 2,41x10^19 kilograms, and its dimensions are 274x231x176 kilometers. It is assumed that Psyche may be the metal core of a protoplanet or its fragment, which was formed as a result of a collision with a large celestial body in the early solar system. Detailed studies of such bodies allow not only to learn more about the mechanisms of formation of planets and cores, but also to help in the development of mining technologies in space.

The launch of the mission is scheduled for August 2022, the station will reach the asteroid with the help of Hall engines using xenon, solar panels will provide electricity to all systems of the device. Psyche is expected to arrive at the asteroid at the end of January 2026, after which it will begin its comprehensive study from orbit using a magnetometer, a multispectral camera, a gamma and neutron spectrometer and a microwave instrument to study the gravitational field of Psyche and its internal structure. An experimental laser communication system DSOC (Deep Space Optical Communications) will be used to transmit data to Earth. The data collected by the station will help map the surface of Psyche, explore its internal structure and composition, understand whether it is indeed the core of a protoplanet, and help reconstruct a picture of its formation and further evolution.

On July 7, 2020, NASA announced the completion of the station design phase, which included the creation of drawings of all elements of the apparatus and its scientific instruments, the manufacture and testing of prototypes and engineering models, and the final verification of the designs of all station systems. Now the specialists will proceed to the stage of creating scientific instruments and subsystems of the station. The start of assembly and testing is scheduled for February 2021, by April 2021 all devices should be delivered to the main clean room of the NASA Jet Propulsion Laboratory, where all work will be carried out.

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