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Total 6 documents matching your query.

1. [Amps] Negative current with a zener screen grid regulator (score: 1): Author: N1BUG <paul@n1bug.com>; Date: Mon, 17 Oct 2016 15:48:24 -0400; Hey amp gurus, I have been going around and around with a recently rebuilt VHF amplifier that is refusing to work correctly. To help me think this through, I want to be sure I am understanding how so; /archives//html/Amps/2016-10/msg00081.html (8,494 bytes)
2. Re: [Amps] Negative current with a Zener screen grid regulator (score: 1): Author: "Jim Garland" <4cx250b@miamioh.edu>; Date: Tue, 18 Oct 2016 05:44:13 -0600; Paul, Positive screen current means that current flows into the grid, and negative screen current means that current flows out of the grid. The Zener diode string fixes the screen voltage, with a cur; /archives//html/Amps/2016-10/msg00086.html (10,579 bytes)
3. Re: [Amps] Negative current with a zener screen grid regulator (score: 1): Author: "Gary Schafer" <garyschafer@largeriver.net>; Date: Tue, 18 Oct 2016 21:46:11 -0500; Paul, With negative screen current the current thru the zener will DECREASE. You need to have enough current in the zener string at zero screen current so it will always be greater than the maximum n; /archives//html/Amps/2016-10/msg00089.html (10,227 bytes)
4. Re: [Amps] Negative current with a zener screen grid regulator (score: 1): Author: Steve Wright <stevewrightnz@gmail.com>; Date: Wed, 19 Oct 2016 06:18:22 +1300; My understanding is, part way through a tetrodes' life it's screen current requirements will reverse. I think you could just swamp it with more current through the zener string, or else build an acti; /archives//html/Amps/2016-10/msg00090.html (8,189 bytes)
5. Re: [Amps] Negative current with a zener screen grid regulator (score: 1): Author: "Gary Schafer" <garyschafer@largeriver.net>; Date: Thu, 20 Oct 2016 18:38:42 -0500; I screwed that one up. I was thinking about a series regulator rather than the shunt zeners. Disregard. 73 Gary K4FMX _______________________________________________ Amps mailing list Amps@contesting; /archives//html/Amps/2016-10/msg00102.html (11,975 bytes)
6. Re: [Amps] Negative current with a Zener screen grid regulator (score: 1): Author: Bill Turner <dezrat@outlook.com>; Date: Sat, 22 Oct 2016 18:55:25 +0000; -- ORIGINAL MESSAGE --(may be snipped) REPLY: Be careful with this "into" and "out of" business. He is talking about the so-called conventional current, which exists only in the imagination. In the r; /archives//html/Amps/2016-10/msg00104.html (9,431 bytes)

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