I am building a motorcycle headlight modulator using a PIC to monitor
ambient light and a few other things.  Anyway, the PIC has to modulate the
headlight ( ~ 4Amps) at a arount 240Hz or so.

There are a few legal stipulations.  They say that you cannot switch the
ground, you must switch the +12V to the headlight.  I want to use a low Rds
HEXFET or simular transistor, but I think I would need a P-Channel device.

Is a P-Channel Mosfet difficult to drive from a TTL logic level, such as a
PIC.

Thanks for any help.

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