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by mark-r
642 days ago
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Interesting that he thinks the clock would be better with a 32kHz crystal than with monitoring the 60Hz power frequency. The power line frequency is very tightly regulated over the long term, and should have an overall better accuracy. |
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It depends on your country. I've heard of this being the case in Europe, but here in Brazil, as far as I could find there's no "long term regulation" of the power line frequency. Which makes sense to me; it means the power network operator doesn't have to artificially deviate from the correct power line frequency in an attempt to "compensate" for a past deviation.