RE: [CAD_CAM_EDM_DRO] Capacitor size? Me again

on 2005-01-26 19:40:40 UTC

And the only way you can double the voltage rating by series-connecting the
caps is if you can be sure they are EXACTLY IDENTICAL to each other. This is
very unlikely, and it means that the voltage will never be split equally
across them.

Andy Wander
Verrex Corporation

-----Original Message-----
From: Stephen Wille Padnos [mailto:spadnos@...]
Sent: Wednesday, January 26, 2005 8:45 PM
To: CAD_CAM_EDM_DRO@yahoogroups.com
Subject: Re: [CAD_CAM_EDM_DRO] Capacitor size? Me again

rllalonde2000 wrote:

>Wow, That was alot of info to absorb! Thanks to all!
>
>I have some 15000 uf, 63volt caps. If I use two of them, that's 126
>volts. Well above the 50% margin. Shouldn't this be enough?
>
>

Yes, but you have to divide the capacitance by the number of caps you
put in series, so these will be effectively 7500 uF.
You have to use four caps to get the same effective capacitance with
double the voltage (two parallel strings of two each).

- Steve

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