Tripp Lite PR60 power supply problem

WelI I haven't replaced it as of yet because I don't know if it was just a diode or a zener. And not knowing this and what else might be wrong I wouldn't want to compound the problem. Lenny

If it's a zener it would be clamping voltage on a reg circuit. Not knowing what C1 is or does it's hard to say what its function is but I would take an educated guess and say it's not a zener. I suppose you'll need to figure out how C1 plays into the circuit. Personally I would ramp the source up using a variac and watch what kind of voltage developed where the cathode should be and take into consideration C1's rated voltage and maybe develop a schematic in my head.

I saw a reference to the T-L PR-60 PSU schematic being available at this website (in 2005)

I don't see the schematic listed, but an email to someone at CB Tricks may be worthwhile.

Otherwise, a voltage regulator circuit isn't extremely complicated, and many examples can be found in the ARRL Handbooks (library) or various online plans.

-- Cheers, WB .............

Is there a crowbar scr in there? It could be a zener used as an overvoltage protector.

tm

any

I tried to register on their site but it was an excercise in frustration. How would I contact anyone there? Lenny

Reverse voltage protection for the cap?