What brand is the first domestic TV set in China?

It is a Beijing brand 820 35cm electron tube black-and-white TV set known as "Huaxia Shangzhe"; The successful trial-production of the first TV set in China has filled the blank of TV production in China and is the starting point of TV production history in China. Today, China has become a big TV producer in the world.

Extended data

The first TV set in China was successfully developed by Tianjin Wireless Power Plant, and was put into trial broadcast on March 17, 958, and named as "Beijing" brand. This Beijing brand 820 35cm CRT black-and-white TV set, which is called "Above China Fold", is now in the product showroom of Tianjin Communication Broadcasting Company.

Daily maintenance

If the TV is used improperly, it will affect the life of the TV.

Pay attention to the influence of geomagnetism. The fluorescent screen of a large-screen color TV should be placed facing south or north, so that the direction of the earth's magnetic field is consistent with the direction of the electron beam rays in the picture tube, so as to prevent the earth's magnetic field from affecting the color purity.

Pay attention to ventilation and heat dissipation. When using large-screen color TV, don't cover it with plastic sheets or cloth covers. And don't pad foam plastic at the bottom, so as not to affect the ventilation and heat dissipation of color TV.

Pay attention to color and volume. The color, volume and contrast of large-screen color TV should be appropriate, which will not only have a good viewing effect, but also save electricity and prolong the life of TV.

Don't make the TV too bright. On the premise of clear image, it is best to dim the brightness. If the brightness is too high, it will first accelerate the aging of fluorescent substances in the TV set, make them run out prematurely and shorten the life of the TV set; Second, it will increase power consumption, cause waste, stimulate eyes and weaken vision.

Pay attention to protect the picture tube. Don't move and shake the TV when watching the program and just turning it off, so as not to damage the picture tube. Picture tubes should avoid direct sunlight.

References:

Baidu Encyclopedia-Beijing Brand TV