If you can measure the B+ current, then it's a simple math problem. Total current (playing at good volume). Divide the voltage needed to drop, by the max current, and you have your resistor value.
Quote:
Originally Posted by davet753
Been thinking about replacing the old selenium rectifier with a silicon diode in my Zenith H845 AM/FM radio.
I know that the B+ is going to go up quite a bit by using a diode in place of the selenium stack, and that I should add a wire-wound resistor to bring it back down to where it should be.
Thanks  |