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Michael A. Terrell Michael A. Terrell is offline
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Default Why do some manufacturers wrap the electrolytic capacitor that getsthe hottest in a switching power supply in shrink wrap?

Chuck wrote:

Extron has been doing this for years and of course it is the first
part to fail in their units. Smart Technologies Sympodium power
supplies, that they have contract built in China, fail in a year or so
for the same reason. Technicians and electronic engineers at my work
place can't think of a rational reason why these manufacturers do
this. This is pro gear where reliability is a great concern so it
doesn't seem to be planned failure mode. Thanks. Chuck

Then you need all new technicians and engineers. They have to
minimize lead inductance of the capacitors, at high frequncies. Unless
you don't really want to remove the ripple.

You can't have a sense of humor, if you have no sense.