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1. [Amps] Applying HV to PA anodes (score: 1): Author: "Harold B. Mandel" <ka1xo@juno.com>; Date: Fri, 17 Sep 2004 12:45:52 -0400; Gentlemen, In the course of understanding the safe and reliable operation of triode amplifiers, a disparity of information has reached me and I ask for your comments and advice: Pat Stein, manufactur; /archives//html/Amps/2004-09/msg00296.html (7,218 bytes)
2. Re: [Amps] Applying HV to PA anodes (score: 1): Author: "Phil Clements" <philk5pc@tyler.net>; Date: Fri, 17 Sep 2004 13:18:17 -0500; Is it or is it not necessary to withhold anode voltage while the '800A7's (etc.) warm up??? Not necessary, nor is it with 8877's. All Alpha 77 series amps apply HV as soon as you switch primary power; /archives//html/Amps/2004-09/msg00304.html (7,480 bytes)
3. RE: [Amps] Applying HV to PA anodes (score: 1): Author: "daniel hearn" <dhearn@ix.netcom.com>; Date: Fri, 17 Sep 2004 15:06:42 -0700; Isn't it the case that the 77 has cutoff bias from the EBS when not driven? 73, Dan, N5AR Not necessary, nor is it with 8877's. All Alpha 77 series amps apply HV as soon as you switch primary power.; /archives//html/Amps/2004-09/msg00313.html (8,257 bytes)
4. Re: [Amps] Applying HV to PA anodes (score: 1): Author: "Harold B. Mandel" <ka1xo@juno.com>; Date: Fri, 17 Sep 2004 18:35:52 -0400; Sirs, According to the later revision of CB-2 on the '77, the bias voltage unkeyed is ~57 volts. When keyed, it goes to 15 volts, and when driven goes to ~8 volts. Hal W4HBM On Fri, 17 Sep 2004 15:06; /archives//html/Amps/2004-09/msg00314.html (8,485 bytes)

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