Quote:
Originally Posted by Username1
Actually, you should fix it, with the selenium's in place. Turn it on, measure the current used by the set as it goes through the rectifiers, and measure the voltage drop across the rectifiers, and get your resistor using ohm's law (whoever that was)
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Actually that won't work using a DC or regular AC meter since the
diodes are only on for a small part of the time. Of course you could
theoretically do it with a scope using a 1 ohm resistor in series with the diodes
to measure the current, and calculating using only the peak current and voltage.
But its easier to start with somebody's recommendation and
start the set on a Variac and change the resistor until it gets the
right B+ at 115Vac.