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Re: [Amps] oil filled caps

To: <g3rzp@g3rzp.wanadoo.co.uk>, "kd4lyh" <kd4lyh@bellsouth.net>,<Amps@contesting.com>
Subject: Re: [Amps] oil filled caps
From: "Tom Rauch" <w8ji@contesting.com>
Reply-to: Tom Rauch <w8ji@contesting.com>
Date: Thu, 4 Oct 2007 09:04:50 -0400
List-post: <mailto:amps@contesting.com>
> If you put capacitors in series, the voltage divides in 
> inverse proportion to the capacity. So if they were all 
> exactly the same value, you'd get equal voltages across 
> each.

That's not true for the dc component, only for the AC 
component. The DC component divides by the leakage 
resistance, so in power supplies you can get most of the 
voltage across one cap even if the values are nearly equal.

Oil filled caps always need equalizing/ bleeder resistors.

73 


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