[AMPS] Hi-Pot Testing 8877

[measures]

>
>  When Hi Pot testing an 8877, what numbers are obtained for a good tube
>between the various elements? A bad tube? 
>
A very good 8877 has less than 2ua of leakage with +/- 8000v  on the 
anode.  Grid/fil. should have zero leakage at +/-200v.  If the anode 
leakage changes with polarity change, gold-sputtering is indicated.  If 
anode leakage does not change with polarity change, a seal problem is 
likely.  

later, Dan, N5AR


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


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