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Old 6th Jun 2008, 11:05 pm   #10
Skywave
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Join Date: Jun 2006
Location: Chard, South Somerset, UK.
Posts: 7,457
Arrow Re: Another (possibly silly) valve question

Cathode poisoning - see the attached link - scroll down to the last entry, "Failure Modes" . . . . .

http://en.wikipedia.org/wiki/Hot_cathode

Al / Skywave
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