Big ripple current cap

Thread Starter


Joined Jan 6, 2009
How can I achieve a whopping 40 A or so ripple current rated capacitor [what dielectric is best for this scenario], or parallel combination of several? This is at around 100 khz. THE other parameters are 350v, and anywhere between .2 and 1 µF. And if this turns out to be non economically feasible in a big way [$30+], I'd just love to know.


Joined Feb 11, 2008
What are you going to use for the switches?? At 100kHz that rules out relays.

And any semiconductor switches in your circuit won't be "galvanicly isolated" any more than a turned off transistor is "isolated".


Joined Apr 20, 2004
If a switch fails shut, you have a lethal situation. There is no way to make the circuit intrinsically safe in the way it is laid out.