After watching Afrotechmod's tutorial about reverse voltage protection, I wondered if I could incorporate it in a circuit I'm working on. Unlike the circuit in the video, mine's dual supply, and there's where things get lost on me.
Do I need to tie the MOSFET's gate to GND, or to the supposedly negative power rail? Is is even possible to do this with a single MOSFET, or do I need another one? If so, P-channel or N-channel?