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Total 3 documents matching your query.

1. Re: [Amps] A request from Portugal (Was: RE: testing 572 B tubes) (score: 1): Author: Karl-Arne Markström <sm0aom@telia.com>; Date: Sat, 4 Mar 2006 21:03:14 +0100; The principle used in the K4IPV power tube tester is very simple. Testing the tube involved providing it with proper DC potentials, and inserting a small and known AC voltage in series with the contr; /archives//html/Amps/2006-03/msg00073.html (10,528 bytes)
2. Re: [Amps] A request from Portugal (Was: RE: testing 572 B tubes) (score: 1): Author: Ian White GM3SEK <gm3sek@ifwtech.co.uk>; Date: Sat, 4 Mar 2006 21:04:30 +0000; Along with these functional tests, has anyone looked at checking the vacuum quality by configuring the tube as an "ionization gauge"? Someone told me about this technique for checking small audio tub; /archives//html/Amps/2006-03/msg00075.html (9,433 bytes)
3. Re: [Amps] A request from Portugal (Was: RE: testing 572 B tubes) (score: 1): Author: Bill Turner <dezrat@copper.net>; Date: Sat, 04 Mar 2006 13:36:28 -0800; ORIGINAL MESSAGE: ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ I about had a heart attack when I read the above before I realized you meant to have the filament power either off or very low. If; /archives//html/Amps/2006-03/msg00077.html (8,129 bytes)

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