> Some research has shown that there is an comparable instrument for ANALOG > quarz watches. As far as I understand it does not try to detect the quarz > frequency but detects magnetic pulses from the step motors that move the > hands of the watch. > > Has anyone of you ever tried to do this in a time nuts laboratory?
Ulrich, Yes, this works well, for both those with seconds hands (one magnetic pulse per second) and those with only minute/hour hands (one or two steps per minute). A large coil of wire is all you need. Have a look at the watch timing tools and sensors at http://www.bmumford.com/microset.html or http://www.bmumford.com/mset/modelwatch1.html Here's an example using a magnetic sensor: http://leapsecond.com/pages/Junghans/ /tvb _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
