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1. [Amps] Advice on Filament Protection Sought (score: 1): Author: "Harold B. Mandel" <ka1xo@juno.com>; Date: Thu, 26 Aug 2004 20:01:08 -0400; Sirs, The new amplifier will be running a pair of 3CPX1500A7 triodes with floating filaments through bifilar chokes, powered by 5 volts Direct Current through a floating bridge rectifier and filter.; /archives//html/Amps/2004-08/msg00359.html (8,060 bytes)
2. Re: [Amps] Advice on Filament Protection Sought (score: 1): Author: Radio WC6W <wc6w@juno.com>; Date: Thu, 26 Aug 2004 17:49:58 -0700; Hi Harold, As long as you are running a bridge... You could substitute SCR's (2N683 or similar) for the two diodes in the positive leg and build a little phase control circuit (See an old GE SCR manu; /archives//html/Amps/2004-08/msg00364.html (9,583 bytes)
3. Re: [Amps] Advice on Filament Protection Sought (score: 1): Author: R.Measures <r@somis.org>; Date: Fri, 27 Aug 2004 01:48:12 -0700; On Aug 26, 2004, at 5:01 PM, Harold B. Mandel wrote: Sirs, The new amplifier will be running a pair of 3CPX1500A7 triodes with floating filaments through bifilar chokes, powered by 5 volts Direct Cur; /archives//html/Amps/2004-08/msg00373.html (8,190 bytes)

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