This video explains the working of fly-back converters and full bridge choppers along with their circuit diagrams.
SMPS
https://youtu.be/YGlUcx6POQU?si=fQQCqjYOvkgBpSVY
STUDY APP LINK
https://play.google.com/store/apps/details?id=co.mark.tqqzs
@profbarapatestutorials