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Tubes That Test High

Posted by Thomas Dermody on 04/05/2009 23:13

Then, since your tester has a bias control, your extremely good tests might be due to a change in grid spacing (due to production changes) instead of emissions? Could be either, regardless of the tester, but that is an interesting thing to keep in mind. I have had rectifiers that peg the meter, but that's only because of extremely good cathode emissions.

I wonder if manufacturers ever changed the gain of a tube (by changing grid spacing). I assume that they did.

Tubes That Test High
Bob Masse	04/05/2009 11:40
Thomas Dermody	04/05/2009 14:31
easyrider8	04/05/2009 18:22
Bob Masse	04/05/2009 18:53
Bob Masse	04/05/2009 21:11
Thomas Dermody	04/05/2009 23:13
It's All Relative	04/06/2009 00:05
easyrider8	04/06/2009 02:27
Why Bother?	04/06/2009 12:54

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