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Re: [Amps] cathode to ground in tetrode amp

To: "Partain, Chuck" <Chuck_Partain@maxtor.com>,<amps@contesting.com>
Subject: Re: [Amps] cathode to ground in tetrode amp
From: Bill Turner <dezrat1242@ispwest.com>
Date: Mon, 30 Jan 2006 08:10:59 -0800
List-post: <mailto:amps@contesting.com>
ORIGINAL MESSAGE:

At 07:14 AM 1/30/2006, Partain, Chuck wrote:

>OK, getting into this more and more every day and learning. Looking 
>at some designs on this GU-84b
>amp, I see a lot if not most of the cathodes have resistance, some a 
>lot(30k) some little (.7) to ground.
>The screen grid and control grids are not grounded and have 
>respectively ~350 and -150v on them.
>
>Why wouldn't it just essentially go to ground? what does the R do in series?
>
>thanks as always.
>
>KA1MWP



~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Is there a schematic we could look at?

73, Bill W6WRT
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