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A cathode ray tube will emit electrons boiled off a heater located in the cathode area. As electrons leave the cathode traveling to a more positive potential located at the plate a grid of negative potential can deflect, impede these electrons flow.
Wiki User
∙ 13y ago
Wiki User
∙ 13y agoA: to begin with it must contain vacuum no air it must have source the cathode and a collector THE PLATE for the electrons emitted from the source. the source must be heated so electrons can be emitted to a positive potential the plate. If a negative potential is allowed to interfere with the emission THE GRID then electrons flow can be varied or controlled
Wiki User
∙ 11y agoThis goes back to the 60's. There were three basic parts of the set:
Power supply: The old b/w TVs required a little over 18,000 volts to make the cathode ray tube work. Nearly 40,000 volts for an old color set. All the rest of the little tubes ran on much less, but still required orders of magnitude more power than a modern TV.
Tuner: Received the signal input from the antenna and turned it into a form the TV could use.
Picture (including the famous "picture tube"): The rest of the circuitry was broken up into the various parts that make up a picture or sound. Each section of the circuitry selected out the part of the signal it needed. Sound, brightness, contrast, vertical hold, horizontal hold, and others.
Wiki User
∙ 13y agotrigger circut,delay line,horizontal amplifier,vertical amplifier,cathode ray tube under CRT have a 3 parts electron gun,deflection plates,fluorescent sreen
Wiki User
∙ 14y agoslatter plain cohesion.
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