More power

 * Original msg to: Esondrmn-at-aol-dot-com

Quoting Esondrmn-at-aol-dot-com (Ed Sonderman)

> In my quest to peak out my system, I have mentioned that I am 
> going to rebuild my RF ground (once more!) and reconnect all my
> primary components with 3/8" copper tubing.  I was thinking 
> that I have more voltage potential that I have not used.  The 
> Powerstat variac is capable of putting out more than the 240 
> in.  I have not used that option yet. 

> I have two questions:  What connections are used for this 
> feature?  I think the terminals on the variac are numbered 1 -
> 5.  What is the maximum voltage, I heard someone say 280 volts,
> is this correct?  

The acutal rating is, I believe, 17% over the input line voltage
when the variac is wired for over-voltage use. You are correct in
that the terminals are numbered 1 - 5. In "overvoltage" mode the
variac is wired with #1 common to both input and output. Terminal
#2 is used for the second input. Terminal #3 is the second output
(wiper brush). Terminals #4 and #5 are not used.

> With 280 volts in, at 60 : 1, I would have 16,800 volts out.  
> Will this smoke my 15 KV Condenser Products capacitor?

Good question. Personally I feel the 15KVAC rms/pulse Condenser
Products capacitor could take it; but if it were mine I would not
risk it unless I was sure that other factors (voltage drop from
current limiting) were bringing the actual HV feed voltage back
to around 15 KVAC.

Richard Quick

... If all else fails... Throw another megavolt across it!
___ Blue Wave/QWK v2.12