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Re: [Amps] cathode to ground in tetrode amp

To: amps@contesting.com
Subject: Re: [Amps] cathode to ground in tetrode amp
From: Steve Thompson <g8gsq@eltac.co.uk>
Date: Tue, 31 Jan 2006 07:34:15 +0000
List-post: <mailto:amps@contesting.com>

Will Matney wrote:
> What I looked at in the schematic didn't make one lick of sense to put a 
> cathode choke to ground on a grid driven amp, then place a shunt resistor 
> across the choke 

Assume that the resistor is a typo and it's meant to be 30R, not 30k - a 
reasonable value to give some rf nfb. The choke across it allows the dc 
and rf conditions to be controlled separately, without interaction.

Steve
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