2. tech-talk
  3. 1146449962

5 pin tube tester

Does anyone know a brand of tube tester that would test a 5 pin tube? I would prefer to get by as cheap as possible. I bought a bunch of tubes and have come across some that my tester was not designed for. One tube I'm particulaly interested in testing is a 2E22. I also have 6 pin tubes that do not appear in my tube measurement guide. Such as a OD3W. Very interesting tube! I would be curious to know what it was ( can be ) used for.
kt_88

Showing 3 responses by herman

herman
2,284 posts
 
A 0D3W is a 150V gas discharge regulator, it is an 8 pin, not 6 pin tube.

http://www.tubecollector.org/2e22.htm and http://www.nj7p.org/Tube1.php?tube=2E22 for info on the 2E22, a power pentode.

Can't help you on what tetster to use.
herman
2,284 posts
 
http://tubedata.tigahost.com/tubedata/sheets/127/0/0D3W.pdf

Is this the tube? If so that is where the confusion lies. It is considered an octal (8 pin) tube because it fits in an 8 pin socket. It does have only 6 pins though and only 2 of those are actually used.
herman
2,284 posts
 
There a few amps that use a 0D3, and even though an 0D3 and a 0D3W look very different they are substitutes. The W just has that protective shock absorber shield around it. It can be tested with the same settings as the non W.

It is very difficult (impossible?) to identify a tube that has no markings. There were 10's of thousands of different tubes made so going just on looks is pretty much impossible.

Are there any marks at all?

The 0D3W is fairly common and doesn't demand a very high price so purchasing a tester just for it would probably lose you some money unles you have a lot of them.
More to discover