[time-nuts] Watch Crystal Aging Rates
brooke at pacific.net
Fri Apr 20 19:02:16 EDT 2007
I've heard that the aging rate of crystals gets better as the frequency gets
lower. The idea is that the more mass in the crystal the less an atom here or
there will be missed. So the 32768 Hz watch crystals should be very good
compared to a 10 Mhz crystal.
Does anyone have any data on watch crystal aging?
If there was a known aging rate then it could be backed out in the countdown
circuit resulting in much better accuracy.
w/o Java http://www.pacificsites.com/~brooke/PRC68COM.shtml
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