100MFD 55V - test-drb@ccmp.vtda.org

4 Dec 2003

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 From: vrs &lt;vrs(a)msn.com&gt; ---snip---
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Here is my problem with the claim that a couple of people have made, that
these are "motor run" caps:  They are clearly filled with paste, not oil (as
some has been forced out through the emergency vent hole), and they seem to
be marked with a "-" near one of the solder lugs.  That strongly suggests to
me that these are electrolytic "motor start" capacitors.

Am I missing something?

    Vince

Hi
 As I think Joe mentioned, the electrolytic capacitors are usually
used as motor run capacitors and not starting. These are non-polarized.
Starting capacitors are usually oil/paper ( newer don't have PCB's ).
This is because the starting capacitors require more current that
would blow up a run capacitor. Run capacitors are used to help
maintain efficiency of the motor while running. They help to
keep a rotating field and help to pull the inductive load back
to a resistive load from the AC side.
Dwight