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[AMPS] Vacuum Cap Rating and Plate Voltage

To: <amps@contesting.com>
Subject: [AMPS] Vacuum Cap Rating and Plate Voltage
From: jono@enteract.com (Jon Ogden)
Date: Tue, 14 Jul 98 21:08:23 -0500
Hi again,

Was just looking at my components some more on my amp.

The tune C is a Jennings UCS vacuum cap rated at 10KV.  From my readings 
on tube amps that I have been doing recently, I remember reading that one 
must accept the fact that the AC voltage across the tune C can end up 
being twice that of the plate voltage.

I have been wanting to run the 4-1000A at a plate voltage of 6 KV.  After 
reading what I have read though, I feel I may have a problem.  6 KV means 
my AC swing could be as high as 12 KV which is above the rating of the 
cap.

Are these caps conservatively rated?  Are the rated for peak voltages or 
RMS voltages?  Do I have a problem running a DC plate voltage of 6 KV and 
using this cap or should I lower my voltage to less than 5 KV which is 
something I really don't want to do as I'll lose some gain on the ole 
firebottle?

Thanks es 73,

Jon
KE9NA


-------------------------------------
Jon Ogden
KE9NA

http://www.qsl.net/ke9na


"A life lived in fear is a life half lived."


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