Hi, I am using an NTE238 as a replacemnet for a Motorola MJ12005 high voltage regulator. It is in a TO-3 case in the power supply for a Counterpoint preamp. Is there anyway to test if the regulator is good without destroying it.
just place it before the variac, it should limit the current (glow brightly) when it encounters a problem... so the excess power has somewhere else to go to rather than your project.
Ron944, did you ever solve your problems with your SA-3.1 power supply?
I am going to update mine soon and would love to get some insight from you
about your PS changes.