On 8/30/2015 4:44 AM, Art wrote:
> Thanks Joe.
>
> I thought of a piezo element, they do produce several volts with light
> impacts, enough to make an LED flash. But, I didn't realize sub micro
> amp comparators were available. I looked for one 5 or 6 years ago and
> found 10 micro amp units only. I'll look at the latest generation of low
> power comparators again.

I'm pretty sure it was a Microchip part, and the Microchip part selector=20
shows several when you select "1" in the Iq column.  In fact , MCP6541=20
says 600 nA typical.

--=20
Joe Wronski
jwronski@stillwatereng.net
www.stillwatereng.net

--=20
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