Have you looked into using a power source/regulator with an enable switch?

-Adam

On Tue, Sep 22, 2009 at 9:24 PM, Harold Hallikainen
<harold@hallikainen.org> wrote:
> I need to have a 3.3V PIC turn on and off +12V, +5V, and -12V to other
> circuitry. I'm currently thinking of a couple P channel FETs for the
> positive voltages and an N channel for the negative. Anyone know of any
> monolithic solutions? 5V current is about 5A. Others are about 1A.
>
> Thanks!
>
> Harold
>
>
>
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