Need capacitor

[Bob and Bettina Groh]

One big difference between the "doorknob" caps and other caps is the current 
handling capacity. The doorknobs are good for amps, most disk ceramics probably 
for much less. Another important factor is RF dissipation factor (which is also 
tied in with current handling capability). Usually info on all this available 
from cap manufacturers. So I would be careful, very careful.

73
Bob, WA2CKY

W5EUQ wrote:
>   Back then, the only caps  that would handle that voltage without 
> breaking down were typically the "doorknob" caps... now days... you 
> probably have disc ceramics that will work too... just solder them in or 
> use screws to hold the cap.... have fun and enjoy.  Bob
> 
> John King wrote:
>> Coupling cap in tank circuit of Heath SB 200 has
>> failed. It is a 1,000 pf @ 6KV Sprague  doorknob type
>> cap. It has threaded holes in each end to facilitate
>> mounting. I have some with studs coming out, but I
>> need one with threaded holes to screw onto back of
>> variable cap.  Probably could use a high voltage disc
>> ceramic that will handle RF.
>>
>> What have you? Will buy. 73, John, K5PGW
>>
>>
>>
>>  
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