[time-nuts] Simple AC mains zero-cross detector
hmurray at megapathdsl.net
Wed Dec 17 03:27:33 EST 2014
csteinmetz at yandex.com said:
> That one is not ideal for this task, because (i) its output pulse is
> symmetrical about the mains zero cross, and (ii) the hysteresis zone is not
> well characterized and will drift with temperature and input voltage. So,
> there is no edge that is well characterized in relation to the AC mains
> zero cross.
What are you going to do with data from the line accurate to 1 microsecond?
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