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[Amps] AB1 vs AB2 ???

To: <amps@contesting.com>
Subject: [Amps] AB1 vs AB2 ???
From: ad5gb@myway.com (ad5gb)
Date: Thu, 28 Nov 2002 22:18:13 -0500 (EST)
Greetings Amps gurus,

Happy Holidays and special thanks to all who've been so helpful to me over the 
past year!  It means a great deal to me.

I'm wondering if someone can explain why AB2 GG service is more linear than AB2 
grid-driven service?  I've been working with my latest project ( still on paper 
) which is a pair of 4-400As and it appears that all other things being equal, 
about 200-250 watts more is available in AB2 operation than is available in 
AB1.  I guess I understand why this is but don't quite understand why AB2 
grid-driven service gives poor linearity yet AB2 cathode-driven service is 
acceptable.  

I decided to try grid driven service because it simplifies bandswitching ( 
given the parts in my junkbox ) and in passive configuration, makes for 
construction simplicity ( no tuned input needed ).

Again.... many thanks to all and Happy Holidays

RD


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