pulse width meter project

[steve ravet]

Garfield Willis wrote:
> you protect the supply path, DON'T forget the signals. IOW, you see
> Steve Ravet has placed opto-isolators in his signal paths. That's not

The nice thing about the optos I used is that they are A/C response. 
There are 2 diodes inside, in parallel, opposite polarities.  So it
doesn't matter what polarity your input pulse is, the opto output is
always the same.

--steve

-- 
Steve Ravet
steve.ravet at arm.com
ARM,Inc.
www.arm.com
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