Noise suppressor and automatic shutdown on the ULPCT(I)-61-11 TV. Scheme, description

Free technical library

ENCYCLOPEDIA OF RADIO ELECTRONICS AND ELECTRICAL ENGINEERING
Free library / Schemes of radio-electronic and electrical devices

Noise suppressor and automatic shutdown on the ULPCT(I)-61-11 TV. Encyclopedia of radio electronics and electrical engineering

Free technical library

Encyclopedia of radio electronics and electrical engineering / Телевидение

Comments on the article

The LF noise suppressor circuit is shown in fig. 1. A properly assembled device does not need to be adjusted.

Noise suppressor and automatic shutdown on TV ULPST(I)-61-11
Ris.1

The device shown in Fig. 2 is designed to automatically turn off the TV at the end of TV shows.

Noise suppressor and automatic shutdown on TV ULPST(I)-61-11
Ris.2

The procedure for working with this device is as follows: first you need to press the SB2 button - while the network is supplied to the power supply of the TV, relay K1 is activated (if the TV receives any signal). Then the button can be released.

At the end of TV shows, the AGC voltage of the channel selector increases to 9 ... 9,5 V, and the relay turns off.

The SB1 button is used to force the TV to turn off.

Author: S. Grishko, Kobrin district, Orekhovsky settlement; Publication: N. Bolshakov, rf.atnn.ru

See other articles Section Телевидение.

Read and write useful comments on this article.

<< Back

Latest news of science and technology, new electronics:

Alcohol content of warm beer 07.05.2024

Beer, as one of the most common alcoholic drinks, has its own unique taste, which can change depending on the temperature of consumption. A new study by an international team of scientists has found that beer temperature has a significant impact on the perception of alcoholic taste. The study, led by materials scientist Lei Jiang, found that at different temperatures, ethanol and water molecules form different types of clusters, which affects the perception of alcoholic taste. At low temperatures, more pyramid-like clusters form, which reduces the pungency of the "ethanol" taste and makes the drink taste less alcoholic. On the contrary, as the temperature increases, the clusters become more chain-like, resulting in a more pronounced alcoholic taste. This explains why the taste of some alcoholic drinks, such as baijiu, can change depending on temperature. The data obtained opens up new prospects for beverage manufacturers, ... >>

Major risk factor for gambling addiction 07.05.2024

Computer games are becoming an increasingly popular form of entertainment among teenagers, but the associated risk of gaming addiction remains a significant problem. American scientists conducted a study to determine the main factors contributing to this addiction and offer recommendations for its prevention. Over the course of six years, 385 teenagers were followed to find out what factors may predispose them to gambling addiction. The results showed that 90% of study participants were not at risk of addiction, while 10% became gambling addicts. It turned out that the key factor in the onset of gambling addiction is a low level of prosocial behavior. Teenagers with a low level of prosocial behavior do not show interest in the help and support of others, which can lead to a loss of contact with the real world and a deepening dependence on virtual reality offered by computer games. Based on these results, scientists ... >>

Traffic noise delays the growth of chicks 06.05.2024

The sounds that surround us in modern cities are becoming increasingly piercing. However, few people think about how this noise affects the animal world, especially such delicate creatures as chicks that have not yet hatched from their eggs. Recent research is shedding light on this issue, indicating serious consequences for their development and survival. Scientists have found that exposure of zebra diamondback chicks to traffic noise can cause serious disruption to their development. Experiments have shown that noise pollution can significantly delay their hatching, and those chicks that do emerge face a number of health-promoting problems. The researchers also found that the negative effects of noise pollution extend into the adult birds. Reduced chances of reproduction and decreased fertility indicate the long-term effects that traffic noise has on wildlife. The study results highlight the need ... >>

Random news from the Archive

Laser device that produces particles with negative mass 13.01.2018

In our physical world, if you push any object, it, according to Newton's Second Law, begins to move away from you. But objects with negative mass will act contrary to this principle, the more you push them, the faster they will move in your direction. All this seems like an impossible thing, nevertheless, such an effect has long been theoretically substantiated and its manifestations were observed in some experiments. And recently, researchers at the University of Rochester completed the development of a device capable of producing particles with negative mass.

In experiments conducted by scientists at the University of Washington last year, a "fluid" consisting of a Bose-Einstein condensate, a cloud of rubidium atoms cooled to an ultra-low temperature by laser light, showed negative mass. In the device created by the Rochester researchers, the negative mass effect is exhibited by quasi-particles produced by fusing photons of laser light with excitons produced in a semiconductor material.

The design of the new device is in many ways similar to that of a conventional laser. Light is directed into the gap between a pair of parallel mirrors. The space enclosed between these two mirrors is called an optical trap, and at the center of this optical trap was placed an atomically thin layer of a semiconductor material, molybdenite, molybdenum disulfide, which interacts with the light trapped inside the optical trap. Excitons produced in a semiconductor combine with photons of light to form quasi-particles called polaritons, which exhibit the negative mass effect.

"By forcing an exciton to give up some of its 'identity' to a photon of light, we get negative-mass polaritons," says Nick Vamivakas, lead researcher. If the "negative" polariton is pulled or pushed, it will begin to move in the opposite direction to that which intuition tells the person."

Scientists from Rochester still continue to work, exploring the physics and behavior of particles with negative mass produced by the device they created. The field of practical application of this achievement has not yet been determined, but scientists are confident that the use of "negative" polaritons will make it possible to create more powerful and efficient lasers.

Other interesting news:

▪ Lamp on bioluminescent bacteria

▪ The laser gun will fly through the weeds

▪ Athletes are harmed by any blows to the head

▪ Telescope to X-ray the Universe

▪ Razer Blade Compact Gaming Laptop

News feed of science and technology, new electronics

Interesting materials of the Free Technical Library:

▪ section of the site Metal detectors. Article selection

▪ article Rules of behavior and actions of the population in the focus of nuclear destruction. Basics of safe life

▪ article Who and when used pop music to convey a message in Morse code? Detailed answer

▪ article Sea mustard. Legends, cultivation, methods of application