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1. [Amps] bias for 3cx3000 (score: 1): Author: "Stan C." <kf6ikc@sbcglobal.net>; Date: Sun, 3 Oct 2004 16:40:16 -0700 (PDT); Hello to all. I need some of the experts to give me some advice on a HB amp I am building. I am using a 3CX3000A7 in GG. I want to ad some bias to bring down the zero signal current. To do this I wan; /archives//html/Amps/2004-10/msg00026.html (6,980 bytes)
2. Re: [Amps] bias for 3cx3000 (score: 1): Author: "Barry Kirkwood" <bjk@ihug.co.nz>; Date: Mon, 4 Oct 2004 01:58:50 -0000; Stan, Sounds to me like you are overdetermining things a bit. Seems to me that if a suitable power transistor is placed in the cathode circuit, then the voltage drop across the pass transistor can be; /archives//html/Amps/2004-10/msg00027.html (9,119 bytes)
3. Re: [Amps] bias for 3cx3000 (score: 1): Author: R.Measures <r@somis.org>; Date: Mon, 4 Oct 2004 02:41:31 -0700; On Oct 3, 2004, at 4:40 PM, Stan C. wrote: Hello to all. I need some of the experts to give me some advice on a HB amp I am building. I am using a 3CX3000A7 in GG. I want to ad some bias to bring dow; /archives//html/Amps/2004-10/msg00029.html (9,217 bytes)
4. Re: [Amps] bias for 3cx3000 (score: 1): Author: Bill Turner <dezrat1242@ispwest.com>; Date: Mon, 04 Oct 2004 07:33:09 -0700; _________________________________________________________ High power zeners are nearly bulletproof when it comes to brief overloads, power surges, spikes, arcs, etc, etc. Your low power transistor-an; /archives//html/Amps/2004-10/msg00030.html (7,529 bytes)
5. Re: [Amps] bias for 3cx3000 (score: 1): Author: R.Measures <r@somis.org>; Date: Mon, 4 Oct 2004 08:21:22 -0700; On Oct 4, 2004, at 7:33 AM, Bill Turner wrote: On Mon, 4 Oct 2004 01:58:50 -0000, Barry Kirkwood wrote: Beats me why people buy high watts zeners to set the bias of amplifiers when there is a better; /archives//html/Amps/2004-10/msg00031.html (8,363 bytes)
6. Re: [Amps] bias for 3cx3000 (score: 1): Author: craxd <craxd1@ezwv.com>; Date: Mon, 04 Oct 2004 22:25:22 -0400; A cheap way to do it is the way Rich says below. Actually you can use both his techniques in his two posts. Use the rectifier (1N5408) string for the adjustable bias, and the resistor in series, shor; /archives//html/Amps/2004-10/msg00040.html (9,277 bytes)
7. Re: [Amps] bias for 3cx3000 (score: 1): Author: "Barry Kirkwood" <bjk@ihug.co.nz>; Date: Tue, 5 Oct 2004 08:51:43 -0000; The original question, as I read it, was about a technique to set the bias for a power tube. A cheap and easy way to do this is to put a power transistor in series with the cathode, and vary the Vcb; /archives//html/Amps/2004-10/msg00045.html (10,199 bytes)

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