So, did you get it to work?
Interesting blunder in those diagrams.The intrinsic diode in the FET is not a "flyback" diode - unless it is a Zener, which it is not.
Haha. Sorry I'm not very familiar with mosfet. But I'm trying to learn how to use mosfet now
I know this can be done easily by using relay, but I wish to take this chance to learn how to use Mosfet to cut the ignition and water level sensor as well. anyway, I have tested Mosfet driver circuit on water pump today, and........(drum roll please...)Nano - friedMosfet - friedMosfet driver - fried 1) The BJT circuit wont fry anything, but just unable to turn off the water pump, pump keeps running)2) The Mosfet circuit start the pump and fry everything within 10 sec...Power on, everything were okay, until I start the pump..... I don't even have a chance to measure the Low High voltage..... So from BJT circuit, seems like the Mosfet can handle the voltage coming from the cdi to ignition coil.I though the Mosfet driver will be more reliable??Thanks both!