Not intending to sound glib, but....

Can you please provide an explanation for the behavior of all
mammals ? No two species appear to be consistent.

I --might-- be able to provide an explanation for certain
topologies, when implemented with a some component types, that
are have specific PCB layout characteristics.


From: [email protected] [mailto:[email protected]]On Behalf Of
John
Woodgate
Sent: Wednesday, December 10, 2008 8:53 AM
To: [email protected]
Subject: Common-mode emissions from SMPS

SMPS seem to be very good at producing common-mode emissions on
all the
cables attached to them and the products they power. Would
someone
please give me a simple explanation of how these common-mode
emissions
are generated?

I don't get involved with the internals of SMPS, and I've been
given
some explanations that are both contradictory and, taken one at a
time,
not terribly credible.

-

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