[time-nuts] Simple AC mains zero-cross detector
kb8tq at n1k.org
Wed Dec 17 07:32:58 EST 2014
> On Dec 16, 2014, at 11:03 PM, Charles Steinmetz <csteinmetz at yandex.com> wrote:
> Bob wrote:
>> The Collins paper on hard limiters does indeed apply here. You *could* make a 60 Hz chain that got down into << 1 us sort of resolution.
> I don't know how "much less than" 1uS you mean by "<<", but I was seeing less than 1uS jitter with the circuit described.
… as in sub ns if you wish to put in enough stages in the chain. The number of stages is a limit on how good you get. 12 or more stages seems a bit over the limit for this sort of thing. Thus the indeterminate units.
> Best regards,
> time-nuts mailing list -- time-nuts at febo.com
> To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
> and follow the instructions there.
More information about the time-nuts