Anybody mind explaining how the auxiliary winding of this power supply is suppose to work? I have never seen this design for a auxiliary power supply before in other SMPSs I have done.
I understand the switching current in the secondary will switch with the switching of the primary, but I don't understand the current paths of the secondary, what role the cap plays (DC isolation for the ZCD?) or the non-zener diode.
I understand the switching current in the secondary will switch with the switching of the primary, but I don't understand the current paths of the secondary, what role the cap plays (DC isolation for the ZCD?) or the non-zener diode.
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