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Re: [Amps] Screen supply for pentode

To: "Oleg Skydan" <skidan@mail.ints.net>
Subject: Re: [Amps] Screen supply for pentode
From: R.Measures <r@somis.org>
Date: Mon, 19 Jul 2004 02:59:48 -0700
List-post: <mailto:amps@contesting.com>

On Jul 17, 2004, at 8:44 PM, Oleg Skydan wrote:


Hi, All !

I am going to build an amplifier using GU-46 tube. It is glass
pentode. You know in the tetrodes we need to use a shunt
regulator to cure the negative screen current problem.
But is it safe to use a series type regulator for pentodes ?
I.e. can the screen current be negative (at first sight it can't)?

Oleg -- Why can't there be negative screen-I in a pentode?

All the best,
Oleg
73 de UR3IQO


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Richard L. Measures, AG6K, 805.386.3734. www.somis.org

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