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Re: [Amps] SB220 running plate current when no drive; Problem

To: Joe <nss@mwt.net>
Subject: Re: [Amps] SB220 running plate current when no drive; Problem
From: Kim Elmore <cw_de_n5op@sbcglobal.net>
Date: Thu, 8 Oct 2020 13:48:12 -0500
List-post: <mailto:amps@contesting.com>
I think as long as the max grid *dissipation* isn’t exceeded, the grid 
*current* is at best an “about here” guide. But what I couldn’t determine is, 
given the grid current, what’s the dissipation? Is there a rule of thumb?

Kim N5OP

"People that make music together cannot be enemies, at least as long as the 
music lasts." -- Paul Hindemith

> On Oct 8, 2020, at 1:13 PM, Joe <nss@mwt.net> wrote:
> 
> I'm thinking 3500/3600 plate voltage or so
> Joe WB9SBD
> Sig
> The Original Rolling Ball Clock
> Idle Tyme
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>> On 10/8/2020 1:05 PM, Rob Atkinson wrote:
>>> On Thu, Oct 8, 2020 at 10:38 AM David Gow <6146guy@gmail.com> wrote:
>>> For actual Eimac tubes the Eima DATA sheet shows much greater efficiency 
>>> and usable power with 4000 volts on the plates.
>> Where are you looking?  At the characteristic curves?   There's
>> nothing for 4KV in typical operation; just max ratings.
>> 
>> 73
>> 
>> Rob
>> K5UJ
>> 
> 
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