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[AMPS] 8877 test results.

To: <amps@contesting.com>
Subject: [AMPS] 8877 test results.
From: 2@vc.net (measures)
Date: Wed, 13 Sep 2000 13:43:23 -0700
>
>>...At -6000v, the anode-grid leakage
>>was 0uA. At +4000v anode-grid leakage was 10uA -  rapidly increasing at
>>higher potentials.
>>
>>It is my opinion that  8877 s/n HSZ 501 probably died from gold boiling
>>off of the grid.
>
>
>Can someone educate me (and others)?  I know very little about power grid
>tubes, although I do know some physics.
>
>What's the physical explanation of this rectification effect -

Loose gold meltballs are repelled from the anode insulator by negative 
potential.  Positive anode potential attracts gold to the insulator.  
cheers, Chuck.  

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


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