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[AMPS] Class AB1 Grounded Grid?

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Subject: [AMPS] Class AB1 Grounded Grid?
From: W8JI@contesting.com (Tom Rauch)
Date: Sat, 17 Jul 1999 09:02:58 -0400
Hi Bill,

>     For other reasons I will be modifying my GG 4-1000A amplifier
> so that I can apply bias to the grids. Have any of  you operated
> a 4-1000A class AB1 as a grounded grid amplifier? Is it 
> more linear than the usual zero bias triode connected configuration?
> TNX ES

Years and years ago, in my wilder days when I ran "big" power, I 
used a pair of AB1 4-1000A's cathode driven.

I regulated the screen with 6146's, and regulated the bias with a 
solid state regulator.

It was much cleaner than conventional zero bias grounded grid, 
although it drove with almost the same power. As I recall it was 
about 10 dB or so better for IMD performance than AB2 zero 
screen voltage GG.


73, Tom W8JI
w8ji@contesting.com

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