Holy Joker Batman!!

Thanks for the tip on the .6 uA comparator!!! Not sure if I need a=20
comparator though, I might be able to get away with a low voltage=20
Schmitt trigger gate (with protection diodes). I find several of them=20
spec'd at .9uA max.

I did an experiment with a junkbox piezo buzzer earlier today. I=20
connected an old (not efficient modern day) LED across the terminals of=20
the piezobuzzer. Using only the weight of the piezobuzzer, in a darkened=20
room, I can see the led flicker as I slid it across my favorite mousepad=20
(heavy gauge Kraft paper, with a noticeably course surface).

Gotta start looking for a really low power mouse with full power=20
management......

Again, thanks for the info!

Art

    On 08/30/2015 11:14 AM, Joe Wronski wrote:
> 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
> shows several when you select "1" in the Iq column.  In fact , MCP6541
> says 600 nA typical.
>

--=20
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