I drew the circuit of the whole module on paper including the opamps, the diode and the mosfet but I don’t really get it. It seems to me that M- is on the drain of the (assumigly) NMOSfet. V++ and M+ are connected. So it looks like between M+ and M- is only the diode. How does that work?
Edit: I simply want to short-circuit something with it, is that possible?