Toddacanda asked in Consumer ElectronicsTVs · 1 month ago

Could a TV Set overheat in 1950?

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  • 1 month ago
    Favorite Answer

    Yes. They ran on valves (known as tubes in USA) which generated heat because the cathode inside the valve was heated - it's why they are described as 'thermionic valves' , and there was obviously heat loss from these.

    Heat was also generated from the TV tube , the CRT , or cathode ray tube, since electrons are generated from a hot cathode to fire at the screen and produce the picture.

    You also got heat leakage from the transformers which were necessary to generate the high voltages used in the CRT

    Add all those up and you got a fair amount of heat produced by these old TV sets.

  • 3 weeks ago

    could heat a small room with a tube tv.

  • 1 month ago

    In normal operation they would not overheat. Vacuum tubes, transformers and resistors would have their operating temperature. The chassis inside the cabinet was able to shed heat out of the cabinet which was ventillated, mostly in the back, but often also on the sides as well. 

  • 1 month ago

    In normal operation they would not overheat. Vacuum tubes, transformers and resistors would have their operating temperature. The chassis inside the cabinet was able to shed heat out of the cabinet which was ventillated, mostly in the back, but often also on the sides as well. If a TV malfunctioned by some short circuit and caught fire, that's more than simply overheating. Vacuum tubes (valves) normally operate my heating a cathode to boil off electrons into an electron cloud, which can be controlled with plate bias and control grids. They have to be hot to do that, just like an incandescent light bulb gives off light from a hot filament. The difference is over 100 volts operated a light bulb, but most vacuum tube heaters were 6 or 12 volts.

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  • 1 month ago

    Yes, if the ventilations slots / holes / screens were blocked.     

    Modern TVs can overheat, too, for the same reasons. 

  • khalil
    Lv 7
    1 month ago

    yes..... in winter cats were sleeping on its top.

    their consumed power was 300~400 watts.

  • 1 month ago

    Yes. They ran on valves, not transistors, and valves ran hot.

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