Accuracy isn't a big deal - as long as I can get a consistent value when =
the battery gets to be about 4V, the converted value is used to set an =
alarm to the user that they need to change it.

>>> gfiedler@GLOBO.COM.BR 11/14/01 06:41AM >>>
I thought about that, too, after writing the message... :)  But it works =
at
least for resistances slightly bigger than 10k. How much bigger depends on
the absolute precision requirements. Up to 40k source should be ok with
this method (at 500nA leakage). 1M source introduces up to 10% error --
which may still be ok in some applications.

ge

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