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Total 5 documents matching your query.

1. [Amps] power vacuum tube hi-pot and "conditioning" (score: 1): Author: Traian <yo9fzs@office.deck.ro>; Date: Mon, 03 May 2004 16:03:46 +0300; Hi all, Time ago I was testing the vacuum tubes for leakage current and breakdown voltage using the focus connections from CRT monitors, so the max. available voltage was 7500V from the very high out; /archives//html/Amps/2004-05/msg00030.html (12,117 bytes)
2. Re: [Amps] power vacuum tube hi-pot and "conditioning" (score: 1): Author: peter.chadwick@Zarlink.Com; Date: Mon, 3 May 2004 17:41:32 +0100; Traian, is the effect you're seeing the same as the 'vac ion pump' that some big tubes have? As I understand it, the ionisation attracts the gas ions to the electrode and keeps the vacuum up. I first; /archives//html/Amps/2004-05/msg00035.html (7,875 bytes)
3. Re: [Amps] power vacuum tube hi-pot and "conditioning" (score: 1): Author: "on4kj" <on4kj@skynet.be>; Date: Mon, 3 May 2004 18:35:57 +0200; A very old story. Long time ago in the early sixties, we constructed Amps with a coaxialcavity on UHF 70 cm . We where happy with 4X150A pulls from the army. We had often extern flash over, inside th; /archives//html/Amps/2004-05/msg00041.html (14,446 bytes)
4. Re: [Amps] power vacuum tube hi-pot and "conditioning" (score: 1): Author: Traian <yo9fzs@office.deck.ro>; Date: Tue, 04 May 2004 09:23:28 +0300; Hello Peter, and thank you for answer. During my search on the web, I have reached some similar info as yours, but it seemed to be applied to very large power microwave tubes only and the vacuum ion; /archives//html/Amps/2004-05/msg00043.html (9,220 bytes)
5. Re: [Amps] power vacuum tube hi-pot and "conditioning" (score: 1): Author: Traian <yo9fzs@office.deck.ro>; Date: Tue, 04 May 2004 10:41:26 +0300; Hello Jos, Thanks for answer. The GU74 are NOS, never used, and were stored inside protective plastic buble bag. Did not see traces of dirt and I usually try touching them as less as possible, becaus; /archives//html/Amps/2004-05/msg00046.html (9,298 bytes)

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