Good question!
it seems like other drawings of him so i believe so.. .i saw it before.. but it was recently in the last 5 years...
do you think it could be a fake? or misleading?
after some sleep i realized one thing... this two optocouplers are connected one to a circuit having a frequency generator having 99% duty cycle... and the second optocoupler control the duty cycle...
those full wave forms probably just tell is a unregulated dc
The two photocouplers are totally right. One is for the frequency and the other one is for the gating.
I also like the rest of the details.
What i miss is the EEC......
I think that that part is missing....