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[AMPS] Amp using 833A

To: <amps@contesting.com>
Subject: [AMPS] Amp using 833A
From: Peter_Chadwick@mitel.com (Peter Chadwick)
Date: Tue, 19 Sep 2000 15:24:03 +0100
Tom says;

>Everyone keeps talking about "mu".

>Why?

Tom, Haven't you learned that the ONLY way that it is possible to run a linear
PA is in GG zero bias? For that, you have to have a high mu tube!

In grounded cathode of course, gain is [mu. Rl]/[Rl + Ra], so gain is
proportional to mu. Thus high mu has advantages in reducing the amount of grid
swing, and thus grid current.

73

Peter G3RZP




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