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[AMPS] a sticky issue.

To: <amps@contesting.com>
Subject: [AMPS] a sticky issue.
From: 2@vc.net (measures)
Date: Mon, 16 Oct 2000 01:57:31 -0700
>
>measures wrote:
>>With a tetrode, one tunes/loads for a specified screen current when the 
>>tank is resonant.  Heavier loading =s less screen current.  In practice, 
>>this proceedure is close enough to simply tuning for max. relative output 
>>-- as with a g-g triode.  //  Burning up a tetrode's screen from 
>>mistuning is unlikely because screen supply power transformers usually 
>>have fast-acting fuses in the primary.  
>>
>Can anyone think of a *worse* way to protect the screen of a tetrode?
>
Substitute a 20A slow blow fuse for the fast blow screen fuse?  Wrap 
aluminum foil around an open fuse and reinsert in the screen fuse holder?
-  During the entire time that the Plywood Box was in service, it 
consumed less than 1 box of 5 fuses.  Rated screen dissipation was 275w.  
The fast blow fuse opened at roughly 200w.  

cheers, Ian.  

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


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