Hi Brooke, The drive for the coils is really not very critical. All you need is a cmos inverter and a couple of capacitors:
~1PPS--[>o---+----[>o-------|(-----+ ~ | | ~ | MOTOR ~ | | ~ +--------------|(-----+ ~ Yes, it is just that easy. -Chuck Harris Brooke Clarke wrote: > Hi John: > > All the quartz clocks I've taken apart have a single coil, for example see: > http://www.prc68.com/I/QuartzClk.shtml > > The drive to that coil is bi-polar and is from a single AA cell, so the > driver > IC must use an H-bridge. If you want to drive a clock like this at 1 PPS > from > a 10 MHz source you will need to use some kind of conversion circuit. That's > why it's easier to generate the 32768 Hz signal and just drive the xtal pins > on > the clock's IC. > > Have Fun, > > Brooke Clarke _______________________________________________ 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.