> Why can't you just put the source lead from the N-ch FET in
> series with the sense resistor?  Make sure that the flyback diode
> ties across the motor.
> 
> In other words, what about the N-ch FET version doesn't work?
> 
> dwayne

I'll be trying to find out today whether an N-ch driver will in fact
work. I had thought of doing what you suggest. There's still the
comparator to sort out. A rectifier/filter on the chopped DC should
do it

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