Quote:
Originally Posted by winston_1
With radios with a line cord (resistive dropper in the lead) the switch has to go in the neutral.
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Why?
Most line cords were simply a resistor in series with the whole set, at any rate for US imports. The position of a switch in a simple series circuit has no effect on its switching function.
There were some UK designs with tapped line cords which allowed higher HT voltage to which this could apply I guess though a single switch in the heater feed branch would still work and would have the advantage of leaving the chassis at neutral with fewer parts still live than with switched neutral. And no worse off than any other AC/DC with reversed mains in and single pole switching either.