I have a '68 portaflex B-15-N-F that I want to make solid state rectified. I am experienced with electronics, and fully realize the precautions that need to be taken around vintage amps and their potentially lethal plate voltages.
Anyhow, I plan on salvaging the octal base from a used-up tube, and implementing a simple diode array with a power resistor in series to replicate the 50 volt drop across a conventional tube recto. Thus a plug-and-play replacement. (much like what Weber sells, but at a much lower cost
) My question: Has anybody figured out what value resistor to use?
Being experienced with electronics, I know how to figure it out (by taking desired voltage drop in this case 50v, and dividing it by the measured operating current) (Ohm's Law) BUT if somebody has already done this, it would save me the time of taking the current measurement.