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Old 03-23-2010, 07:11 AM   #3253 (permalink)
KISA
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Sorry for this questions if it's already been asked, I've looked through a fair number of this forums pages (not all 327 of them) and couldn't see it. But Murphy's law will say it was probably on the next page

I'm just wondering what is the need for so many capacitors. I understand they add when in parallel so it affectively 16 x 820uF, roughly a 200V 17mF Capacitor. Is the high capacitance needed to successfully smooth out the voltage swing caused by the mosfet switching frequency or am I completely off the path?

The reason I ask it that I'm trying to determine what capacitance I will require for a controller I wish to build/test for an electric motorbike and what are the contributing factors?

Thanks,

Markus
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