Are you sure it is a diode? I'd bet it is a thermal fuse. You can tell by
the thermal rating and current limit rating which is usually stamped on the
body. Another way to check is to use a continuity/diode tester. A diode
will only conduct in one direction with a small ~(0.7V) drop while the fuse,
if still good, will look like a dead short in both directions.

The fuse is a safety device to prevent overheating and the device from
catching fire.

Bob


"Kim Sleep" wrote in message
.. .

Recently opened up a 120v,60hz Coffee machine, and the pump has a large
diode in series with one of its 120v input leads. The pump works either
with
this diode, or without. Just wondering why its there?

Thanks
--
Kim..."A Man Of True Frankenstinean Proportions"

--
Kim..."A Man Of True Frankenstinean Proportions"