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Was reading an old repair manual from the 80s and saw a CRT TV schematic that needed a 25,000 volt power supply... that's just wild to think about now.

3 comments

3 Comments

Actually, that's the anode voltage for the picture tube itself. The main power supply in the set was way lower, like 120 volts for the tube heaters and lower DC for the circuits. That 25kV was generated by a separate flyback transformer inside the TV.

river_allen1mo ago

Didn't vera514 just explain how the high voltage was separate? I read that old flyback transformers could be pretty dangerous to mess with. Makes sense why they always warned you about opening the back.

joel_hall171mo ago

My uncle still has the scar from a flyback shock.