[AMPS] 8877 test results.

measures 2@vc.net
Wed, 13 Sep 2000 16:22:52 -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.
>I'm not arguing; but I need help understanding.  I can understand why a
>field-emission rectifier works; it's because electrons come in just one
>polarity.  (At least, in normal matter, not antimatter :-)  But I don't
>understand why little gold balls would exhibit polarity.
They don't.  Just like bits of paper, they are attracted to positve.  

cheers, Chuck

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

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