I need to control the +12v supply line to a flasher unit. I prefer to not use a relay and would like to use a FET if that is possible.
I would like to make an intervalometer using a 556 chip that is started by a manual switch that will go to ground when activated. Then when it times out I want to cut the +12v line to the flasher unit.
I don't know what or how to wire the FET. I have some N channel ones here with very high current ratings. The load is about 3.5 amps @ 12vdc.
OK ... not sure how it goes. I will control the gate with the 556. Who gets the +12v and who gets the load?
Any recommendation on a part number? I will probably run the 556 from an 8v regulator.
Thanks Mike BTW the camera audio thing works great!