Quote:
Originally Posted by Alex KL-1
For the 3.3V/50V one from this catalog, the maximum ripple is 25mA for 60Hz (120Hz). Certainly is higher for 15kHz, but is too far away...
Is good to take one with higher current classification, or to find the >10kHz ripple current. It needs to be higher than the current voltage product of the H circuit; for example, a small 5" BW draining perhaps 600mA from the 12V PSU, is good to use a cap rated at least for this current to be sure.
Some cap types have high frequency ripple specified.
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Okay. Thanks for the explanation, this is new stuff for me.
I found a film capacitor, but I don't totally know what math I need to do in some cases. For example, it has a 3.3 at 100V, and it has no ripple rating. All it has is 20V/microsecond, given as a dv/dt rating.
