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

Hi, Scot:

No, it doesn't work that way. When you put two capacitors in parallel, the
same voltage is dropped across both, so the voltage rating of the
combination doesn't change. It's actually the lowest rated voltage of either
of the capacitors.

If you put the two in series, part of the total voltate is dropped across
each capacitor, resulting in a total allowable working voltage of something
larger than the working voltage of either capacitor. However, it's not
necessarily the sum of the working voltages of the capacitors.

While the theoretical working voltage is twice the working voltage of each
capacitor only when the capacitors have equal value, that holds only when
each capacitor has exactly the same capacitance and working voltage. With
electrolytic capacitors, that's not an easy feat, given the wide tolerances
in capacitance. With a series connection, the voltage across the first
capacitor is Vtotal * (C1 / (C1 + C2)).


-- Jerry

|
|But doesn't the voltage rating drop to half when you run caps in
|series and
|double when you run them in paralell?
|
|Scot