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.
-- 
OOO - Own Opinions Only. Try www.jmwa.demon.co.uk and www.isce.org.uk
Either we are causing global warming, in which case we may be able to stop it,
or natural variation is causing it, and we probably can't stop it. You choose!
John Woodgate, J M Woodgate and Associates, Rayleigh, Essex UK

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