close the FET by bringing the GATE back up, where the resistor holds it by default. If you want to control it from a 3.3 V MCU that can’t handle the high-side voltage on its pins, you can add a ...

Enter the Insulated Gate FET (IGFET) which is the basis for most ... causes the PNPN junctions produced by layout to act as back to back transistors that cascade into full conduction resulting ...