Re: [CAD_CAM_EDM_DRO] Capacitors, no CAD, EDM, DRO content but maybe CNC

In a message dated 10/19/2002 11:54:52 AM Central Standard Time,
jj5412@... writes:

> Working voltage also increases when caps are in series. So if you have
> two 70v 40,000uf caps in series, you have 140v, 20,000uf.
>

JJ: Not "exactly". In order for this to be true, you must put high-value
resistors in parallel with each capacitor that you then connect in series.
That is, there would be then also a string of series resistors "along side"
the string of capacitors, but with the "joints" of each string tied, like a
ladder. This "distributes" the voltage among the capacitors, which would
OTHERWISE tend to "hog" the voltage until one or more "blew". For 70 V, 40
mF, I would guess use 15K resistors. Do the math yourself!


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