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[AMPS] Re: New G2DAF amplifier information

To: <amps@contesting.com>
Subject: [AMPS] Re: New G2DAF amplifier information
From: 2@vc.net (measures)
Date: Thu, 23 Mar 2000 03:37:03 -0700
>
>Rich says:
>
>>regulate screen potential.
>
>
>Now there we do have agreement. 

Yet, in the DAF config., screen potential somehow does not count?. 

>Highly desirable whether you're talking of
>an AB1, AB2, B or g-g ( where the screen is RF grounded, rather than dc
>grounded). 

In AB!, tetrodes with handles normally have the screen DC grounded direct 
to the chassis in eight places.  //  To obtain stability in Any 
configuration, the screen is always at RF ground potential.  

> Regulate bias as well to keep the quiescent point constant with
>line voltage changes.

With a tetrode, an increase in anode supply potential, increases ZSAC.  
Similarly, a decrease in anode potential causes a decrease in ZSAC  To 
correct for such, the bias potential needs to be adjusted.  When the bias 
supply is Unregulated, the needed correction will automatically take 
place whenever the electric mains potential changes.  Is mo' complicated 
always mo' betta?

later, Peter

-  Rich..., 805.386.3734, www.vcnet.com/measures.  
end


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