Re:System separation in the Continental Europe Synchronous A...
by ardy42 on Tuesday January 26, 2021 @09:29AM
(#25916094)
>> On the consumer side, your microwave, coffee machine and even bedside clock will
> I'd be very surprised. It's cheaper to build in a 32.768kHz crystal for timekeeping than try to access the grid frequency from the isolated low-voltage circuit.
IIRC, the grid frequency is usually more accurate. Probably because it's carefully monitored and managed by the power authorities like the OP describes. If you build a clock with its own frequency reference, than any error will accumulate and have to be monitored and managed by the user.
> I'd be very surprised. It's cheaper to build in a 32.768kHz crystal for timekeeping than try to access the grid frequency from the isolated low-voltage circuit.
IIRC, the grid frequency is usually more accurate. Probably because it's carefully monitored and managed by the power authorities like the OP describes. If you build a clock with its own frequency reference, than any error will accumulate and have to be monitored and managed by the user.