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Old 20th Apr 2018, 5:26 pm   #10
Al (astral highway)
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Join Date: Nov 2006
Location: London, UK.
Posts: 3,496
Default Re: DC heater supply valve tester.

Quote:
You will see the diodes in series with the emitters on the schematic. What happens here if say you have the radio's HT plugged on to the 135V output (giving the filter caps in the radio that potential), and while its running, then say pull out the plug and plug it on to the 90V connection, the energy stored in the radio's capacitors destroys the pass transistor.
Nice one, Hugo. Neat idea. I also like other aspects of your battery eliminator - have you put it elsewhere on the forum?
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