A response of switching regulator to conductive noise on AC-mains

This paper experimentally and by simple simulation describes a frequency response of the switching regulator (ringing choke converter) to the conductive noise on the AC-mains. It is concluded that, for the conductive noise in the frequency range below the switching frequency, the switching regulator has the same stability (i.e. noise suppression ability) as the static characteristics which mean to supply the specified output voltage for the static load and voltage changes, and, for the conductive noises in the frequency ranges over the switching frequency, has no ability to suppress the conductive noise