[time-nuts] accurate 60 hz reference chips/ckts

Jim Harman j99harman at gmail.com
Thu Dec 14 23:13:34 EST 2017


On Thu, Dec 14, 2017 at 10:53 PM, Bob kb8tq <kb8tq at n1k.org> wrote:

>
>
> Of course this *assumes* an electronic approach. Given that it’s moving
> pretty slow and you
> only are looking at fractions of a millisecond, one *could* do an electro
> mechanical design …...
>
> Bob
>
> There is interesting background on power grid frequency/time adjustment
procedures here
https://en.wikipedia.org/wiki/Utility_frequency#Time_error_correction_(TEC)

and here
https://en.wikipedia.org/wiki/Electric_clock#Accuracy
-- 

--Jim Harman


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