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Re: [Amps]resonant filter            tspa

To: amps@contesting.com
Subject: Re: [Amps]resonant filter            tspa
From: Peter Chadwick <g3rzp@g3rzp.wanadoo.co.uk>
Reply-to: g3rzp@g3rzp.wanadoo.co.uk
Date: Tue, 15 May 2007 05:55:56 +0200 (CEST)
List-post: <mailto:amps@contesting.com>
John said:
> Oil and 
paper caps will eventually fail if not careful.<
I haven't had a failure. But on a 3800 volt supply, the tuning cap is at least 
5kV - it may be 10 -  and was from a radar where I suspect it had to handle the 
prf at power. But it's big, and I guess that bigger caps don't get as hot 
internally. For a 350 volt supply, I've been using a 1 kV rated metal cased WW2 
tubular paper for over 20 years now.
I guess in general, hams have a somehat cavalier attitude to capacitor current 
ratings, and as John says, that can let you down.

73
Peter G3RZP
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