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Author Topic: Controlling field coil current of an alternator by sensing its load current at o  (Read 1114 times)
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MarkT
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« Reply #15 on: March 05, 2011, 07:51:00 am »
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A thought: You could use PWM to drive the field windings, and with a beefy MOSFET output only a small or no heat sink would be necessary.  You would have to find a good frequency to run the PWM at - the Arduino default might be too low (although field coils tend to be high inductance and smooth current rather well.
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« Reply #16 on: March 05, 2011, 11:35:57 pm »
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So instead of the darlington transistor you will just connect an Mosfet (what type of mosfet) Pmos? Nmos?   to the output of the arduino? then this current will be amplified? Is this solely for the purpose of avoiding heat generation?
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