18 Mar
2005
18 Mar
'05
6:19 a.m.
>>>> "William" == William
Donzelli <aw288 at osfn.org> writes:
> Are these capacitors electrolytics at all? I
thought that motor
> capacitors were generally oil-filled, but not electrolytic.
William> Nearly all are oil, but every so often you see an
William> electrolytic version. The oil caps will likely be good long
William> after we are gone.
There are motor start caps and motor run caps. The former have much
higher capacitance and are only connected for a few seconds during
motor start. So my understanding is that start caps are often
electrolytic because you can get away with it, while run caps are not
because they are subjected to AC full time.
paul