Yeah I think that's Mario's (see paper's upstream) first low side quench and reset circuit. He pulses in some charge through a cap. It's a diode and he takes advantage of that. (sometimes my model of a diode is a switch, and that stops me from thinking in reverse. :^) Then my power supply has to swallow the reverse over-voltage?
Umm, I don't know/ recall it.
I need (maybe) a delayed reset and blanking pulse. I've got 74hc14s, diodes, R's and C's,
I was going to ask for links with circuits, but it's simple enough, (I think) I can use the RC delay on one side and the diode on the other. That still leaves a lot of permutations.
George H.