[Amps] Energy stored in capacitor bank ?

G0RUZ Conrad conrad at g0ruz.net
Mon Oct 3 18:31:54 EDT 2005


You need to think very carefully how you are going to deal with the
destructive force all that stored energy could inflict. Personally I
wouldn't want more than about 20% of what you have there. It may be worth
considering crowbar protection such as used by OE5JFL and a really nice big
glitch resistor.

http://www.qsl.net/oe5jfl/flashover.htm

73

Conrad G0RUZ

> -----Original Message-----
> From: amps-bounces at contesting.com 
> [mailto:amps-bounces at contesting.com] On Behalf Of Frank 
> Goenninger DG1SBG
> Sent: 03 October 2005 22:35
> To: Dan K9ZF
> Cc: amps at contesting.com
> Subject: Re: [Amps] Energy stored in capacitor bank ?
> 
> 
> Am 03.10.2005 um 22:51 schrieb Dan K9ZF:
> 
> > Frank Goenninger DG1SBG wrote:
> >
> >
> >> I have 14 caps in series, each having a capacity of 4200 
> uF. The load  
> >> voltage for the bank will be about 3250 V DC
> >>
> > Are you sure those aren't 420 uF caps instead of 4200 uF?
> 
> Yeah - 4200 uF, rated for 400 V DC with an ESR of 35 mOhm, 
> rated for 10 A ripple current.
> 
> >
> > That is a BIG cap!
> 
> 3 inch wide and 4 inch height. ;-) 14 of them makes quite a 
> capacitor  
> bank that uses quite some space ...
> 
> >
> > Dan
> >
> 
> Cheers
> 
>     Frank
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