On Sat, Sep 13, 2014 at 8:08 AM, Dr. David Kirkby (Kirkby Microwave Ltd) < [email protected]> wrote:
> So if it the mechanics skips a pulse, one really needs some method of > measuring the position of the hands and recording that. > Better modern quartz movements, have circuitry in the pulse driver that senses reluctance during the drive and will adjust the drive level down to save battery power if mechanical drag is low, and when the drag level is high (maybe fighting against gravity) even "re-do" the failed advances. The mechanical WWVB movements also have sensors for calibrating position of hour/minute/second hands (usually at a single fixed point on the dial). Tim. _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
