> From: Rob Jarratt
> I have just written a new blog post
> the comparators are not producing valid output, the input signals are
> varying abave and below the reference voltage, but the outputs never
change.
Don't forget that when the output of chip A is wrong, that might be caused by
chip
B which it is driving... ('All digital circuits are made out of analog
components',
and all that...)
Noel
