24-04-2023, 04:47 PM
If you look at the Avo valve tester manual all it specs for testing most, if not all rectifiers is an anode current with the anode volts specification given as "REC", which I presume means recommended, what ever that means. Most valve rectifier datasheets state 4 parameters in simple terms - total supply R per plate (anode), max C or L, V RMS & Ia @ filter IP. With that in mind a good test setup would be a variac feeding a mains tfmr, a cap and a load or a DC supply into the rectifier + cap under load. If V RMS or Ia is off it's suspect or dud.
When testing valves with a simple setup you get a feel for a good valve,if your voltmeter or ammeter reading starts mucking about somethings not right. Give the valve a wiggle in the valve base, still not right, it's iffy.
Andy.
When testing valves with a simple setup you get a feel for a good valve,if your voltmeter or ammeter reading starts mucking about somethings not right. Give the valve a wiggle in the valve base, still not right, it's iffy.
Andy.
