I am in the process of building a jet engine and for the fuel control I am using convertible top motor/pump. I have tested the current draw to be a start-up of about 20 amps and running at about 14 amps. The mosfet irfz44 smokes almost instantly when I try to implement this as the motor speed control for the fuel injection. I would like to know how I can beef up the output of the pwm so it can handle the full range needed to control this motor. I am wondering if a different mosfet or any other transistor type would work. Or, putting more mosfets in a parallel circuit would work. If there is maybe a better pwm design that I could use that would make this task simpler and that there is already a circuit board layout completed that I could get a hold of. If needed, I can post the current schematic of the one I have built.
Thanks for any replies,
Steve
Thanks for any replies,
Steve
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