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1. Re: [Amps] filament supply d.c. or a.c. (score: 1): Author: "Roy" <royanjoy@ncn.net>; Date: Wed, 13 Feb 2008 10:55:57 -0600; Asked, "Looking for reliable information regarding filament supply to amplifier tubes. What are the pros and cons for D.C or A.C volts." Definition of 'filament' indicates a directly-heated cathode.; /archives//html/Amps/2008-02/msg00084.html (6,746 bytes)
2. Re: [Amps] filament supply d.c. or a.c. (score: 1): Author: <d.cutter@ntlworld.com>; Date: Thu, 14 Feb 2008 10:23:40 +0000; Working on an army battery set back in the '70's I wondered if polarity would make a difference; I thought that one end would be more biassed than the other wrt grid, but when I reversed the polarity; /archives//html/Amps/2008-02/msg00091.html (8,432 bytes)

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