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In Reply to: RE: Mundorf ECap Direction posted by Duster on February 20, 2021 at 03:18:55
The outer foil is preferred to be on the neg. term. or ground
to prevent hum problems. You can find out which lead using
the "hum" test, hooked up to an amp or scope.Have many non-polars here with that ridge too. Polar caps,
the ridge is pos. end.
Edits: 02/20/21Follow Ups:
Part of the question is whether bipolar electrolytic construction is such that there even is an "outer foil" to worry about. My guess would be no, but it would be a guess.
from the pic I assume the case is the outer foil. It's just weird
A nonpolar electrolytic is made from two equal value polar electrolytics connected "back to back". Either the two negative leads are connected to each other or the two positive leads, inside the casing. Therefore, I tend to think there is no such thing as an inner or outer foil in such a construction, and the pinched casing simply suggests they used some casings for polar electroytics in order to package the nonpolar one.
It would be easy enough to try one and see.
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