On 7/17/06, Jinx <joecolquitt@clear.net.nz> wrote:
> > sound trigger
>
> This is the front end of a low Iq sound trigger. The o/p of this
> goes to a second TLC271, wired as a comparator, then to a
> 12F675. Before clipping there is ample clean amplification. It's
> used to detect a particular noise at a particular level in an
> otherwise quite environment
>

Looks good.  The 100k trim is to match different mics?  Do you set it
for 2.5VDC on the mic?

Regards,
Mark
markrages@gmail
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