29 Jul
2007
29 Jul
'07
9:37 a.m.
From: Josh Dersch <derschjo at msu.edu>
So... how do I tell whether the capacitors I've put in there are low or
high ESR? Are there particular markings I should be watching out for? I
just bought these from the local electronics shop, I had no idea there was
anything to look out for aside from voltage & capacitance. Guess I
shouldn't assume these things :).
Thanks,
Josh
Hi
Not all the caps need to be low ESR or that would be the only type made.
The ones that filter the outputs of the secontary rectifiers should be
low ESR. The input rectifier filter caps should be low ESR types as well
but this isn't as critical.
Most others are low current filters and don't have the same requirement.
When used as bypass on boards, there are suppose to be high frequency
caps ( ceramics and such ) to deal with the high frequency currents.
Dwight
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