William Chops Westfield wrote:
> Can a PIC directly drive a PNP transistor as a "high-side" switch?

Yes, if by "directly" you mean via a base resistor, and if the high side
switch voltage is the same as the PIC's Vdd.

> I has always assumed this was possible, but looking it WRT my high
> voltage issue, it would seem to put the PIC output pin at high
> voltages,
> and probably turn on all the time via protection diodes, or something
> (PNP Emitter to +150V, collector to load, base to R to PIC IO.

You're right, that clearly won't work.


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