In this video, I show that the main intent is to develop an Average Model of the Flyback. I show the techniques used in TopSPICE to simulate the subcircuits such as the Output filter, the error amp and the Opto-Coupler. Once this is understood a procedure can be used to compensate the loop. Questions, comments and request for TopSPICE files can be sent to rbola35618@aol.com. Please subscribe, rate, and share.