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1. R: [AMPS] 8877 bias (score: 1): Author: Maurizio Panicara" <i4jmy@iol.it (Maurizio Panicara); Date: Sun, 19 Dec 1999 21:43:58 +0100; Once I tried something similar to avoid using large zener diodes. I didn't like very much the performance of several direct polarized diodes in series to establish a voltage. I had much better result; /archives//html/Amps/1999-12/msg00248.html (8,772 bytes)
2. R: [AMPS] 8877 bias (score: 1): Author: measures@vcnet.com (measures); Date: Sun, 19 Dec 1999 15:29:19 -0700; ? a Zener diode is not adjustable. A string of forward biased diodes is. cheers, Mauri - Rich..., 805.386.3734, www.vcnet.com/measures. -- FAQ on WWW: http://www.contesting.com/ampsfaq.html Submissi; /archives//html/Amps/1999-12/msg00254.html (7,324 bytes)
3. R: [AMPS] 8877 bias (score: 1): Author: k5and@ga.prestige.net (Dick Hanson); Date: Mon, 20 Dec 1999 07:27:47 -0500; Mauri.... I agree with you and Marv. My experiences have been that the regulation, whatever type you choose to call it, is better with 1) the big zener, or 2) small zener in combo with pass trans. No; /archives//html/Amps/1999-12/msg00269.html (7,333 bytes)
4. R: [AMPS] 8877 bias (score: 1): Author: G3SEK@ifwtech.demon.co.uk (Ian White, G3SEK); Date: Mon, 20 Dec 1999 13:46:09 +0000; The TL431 "adjustable zener" with a PNP Darlington pass transistor gives very good voltage regulation - far better than is actually needed - AND it's fully adjustable AND the whole thing costs about; /archives//html/Amps/1999-12/msg00271.html (8,197 bytes)

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