Re: Need help designing an automotive engine run detector.

On Mon, 08 Oct 2007 13:03:43 -0700, Gerbermultit00l@xxxxxxxxx wrote:

Hello all,

I am trying to develop a new type of aftermarket product that will
connect to a vehicles battery. Ground return will be through the

Your observations on charging are off base... but...


Use a microphone and *listen* for a running engine.


I'd monitor battery voltage, that will always tell you when the
battery is charging, and it is safe to draw a load from it.

Another alternative is an indcutive pickup fastened to the alternator.
.

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