Can anyone tell me if the Triplet 3480 is a good tube tester? One has come my way, and I have a large stack of sub miniature tubes I want to test and this appears to handle them. The tester needs a little attention but it's in pretty good shape for a 50-60 year old unit. After I cracked it open today I found what looked like pretty vintage battery, a 67 1/2 volt Eveready nine lives No.467.
So the question is, can this be a useful bench tool or does it belong as a historical curiosity?
So the question is, can this be a useful bench tool or does it belong as a historical curiosity?
Looks like it does mutual conductance and emissions so I’d say it’s pretty good. Does it need that battery for the tube tester or just the ohm meter?
That I do not know, there is a second battery next to it. . I need to get a manual for this and fix the meter display glass, or at least clear it out of the way. I took a few photos.
Shared album - Owen Gwillim - Google Photos
Shared album - Owen Gwillim - Google Photos
It does not measure mutual conductance. Still handy to have around though.
TRIPLETT MODEL-3480 COMBINATION TUBE-TESTER AND VOM SM Service Manual download, schematics, eeprom, repair info for electronics experts
TRIPLETT MODEL-3480 COMBINATION TUBE-TESTER AND VOM SM Service Manual download, schematics, eeprom, repair info for electronics experts