Ripple is 50hz or 60hz?

[goldsmith]

I'm not sure what those IC chips do, can you explain what is going on in this circuit

Hi again
If your mean by IC is that uc3844 , that is a simple PWM driver .
Where did you took those waveforms ? across the transformer ? or inductors perhaps ? or DS perhaps ?
Those are usual . it is because the circuit don't have proper snuber network , but sometimes it is inconsiderable . so we can neglect them ( sometimes ) .
Best Wishes
Goldsmith

 

[danny davis]

What is a snuber network? What does it do?

The waveforms is on the primary of thr t101 and t102 primary of transformer

- - - Updated - - -

What is a snuber network? What does it do?

The waveforms is on the primary of thr t101 and t102 primary of transformer

- - - Updated - - -

What is a snuber network? What does it do?

The waveforms is on the primary of thr t101 and t102 primary of transformer