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[AMPS] HV filter capacitors

To: <amps@contesting.com>
Subject: [AMPS] HV filter capacitors
From: al511@freenet.uchsc.EDU (Robert Neece)
Date: Wed, 4 Feb 1998 11:36:23 -0700

Rich, AG6K, writes:

>Even if the capacitor is designed for flash discharge service instead of 
>dc filter service, with a 4500 peak-v rating, it should work well at 
>2500v in dc filter service.    

Is there a handy rule of thumb as to how much to derate an
energy-storage capacitor when one wishes to use it in dc filter
service?  

I understand that the energy-storage types (flash-
discharge) are designed for ultra-low internal resistance, so
that they can dump their accumulated joules in a hurry.  I
understand, too, that this makes these caps. less than ideal
for HV power supplies.  

But I'm a ham.  How far ought I to push the envelope with my
energy-storage caps?  Mine are big guys.  Do I need to mount
them in an explosion-proof cabinet to be on the safe side?  :-)

73 de Bob, K0KR

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