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1. [AMPS] 572-B Bias voltage, for todays tubes??? (score: 1): Author: UNCRICHIE7@aol.com (UNCRICHIE7@aol.com); Date: Wed, 23 Feb 2000 16:38:44 EST; Can anyone suggest what voltage should be used for bias on todays tubes. As in Chinese, Russian, USA 572-B tubes. I'm brewing a quad of 572's, mounted vertically, if that makes any difference. I'm us; /archives//html/Amps/2000-02/msg00530.html (7,504 bytes)
2. [AMPS] 572-B Bias voltage, for todays tubes??? (score: 1): Author: wb8jkr@juno.com (Mark S Graalman); Date: Wed, 23 Feb 2000 19:36:59 -0500; Kurt, I really don't know what the present manufacturers recommend for the 572B, but I would think that 24 volts would almost cut it off. I know the Cetron tubes at about 2400 volts ran a operating b; /archives//html/Amps/2000-02/msg00533.html (8,657 bytes)
3. [AMPS] 572-B Bias voltage, for todays tubes??? (score: 1): Author: 2@vc.net (measures); Date: Wed, 23 Feb 2000 18:20:25 -0700; The correct bias is whatever it takes to produce the right Zero Signal Anode Current. A pretty good semi-adjustable bias regulator is a string of forward biased 1A diodes. Adjust the ZSAC by shortin; /archives//html/Amps/2000-02/msg00535.html (7,821 bytes)

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