Mark E. Skeels wrote:
> But, if the MOSFET junction does not actually turn on when the circuit
> sees correct input supply polarity,

then using a FET is pointless since it could be better replaced by a
Schottky diode.  Usually the reason for using a circuit like what you
describe is to get around the diode drop.  However, at 12-24V in is that
really enough of a issue for you that you can't tolerate a Schottky diode
drop?  In other words, your spec is really 12.0 to 24 volts, and powering it
from 11.6V wouldn't work?


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