[email protected] said: > OK, the LOWEST cost option I can think of for driving an analog clock with > millisecond accuracy. Buy a normal AC powered clock that uses a > synchronous AC motor that runs off the 60Hz AC power, not a battery powered > clock. Then have your NTP disciplined computer generate a 60Hz audio sine > wave. Amplify the sine wave to 12 volts then use a small 12:120 volt > transformer to step up to 120VAC. ...
Can you still get those clocks? I haven't seen one in a while, but I haven't been looking. I just poked "Alarm Clock" into google. The first few hits were internet stuff. Next was Amazon. Their page had roughly 20 clocks, but only a few of them had hands and they didn't run off the wall. Another approach would be to connect the stepper motor coils from a battery operated clock to your favorite small processor, and clock that chip with 10 MHz from your GPSDO. I think I've seen a web page on that stuff, but I don't remember where. -- These are my opinions. I hate spam. _______________________________________________ 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.
