On Tue, 31 Mar 1998 15:10:20 -0800, you wrote:

>I have a PIC controlled circuit that also includes an LM386 audio
>amplifier. When I put the PIC into sleep mode, I'd like to eliminate the
>power drain of the amp. I can use a relay to do this but I figure that
>there is probably some very clean solid state way to accomplish this.
>Any ideas?

John,

Try powering the audio amp through a very low Rds(on) N-channel
MOSFET.  Use a PIC pin to bias the gate high when you want it on, and
make the PIC pin an input and use a 1 Meg resistor to ground to turn
off the MOSFET when you want the amp turned off.

 - Rick
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