Poor man's solution: Use an Arduino to read the Thunderbolt 1PPS and lock a 50Hz (or 60Hz) square wave to the 1PPS. Any resulting jitter can likely be kept in the tens of microsecond range, easily filtered out by the clock mechanics. Filter the square wave a bit and feed it into an audio amplifier (or two) of sufficient power to run the clock. (Possibly a 12V powered bridge amplifier at ~14W would be adequate?) Use some sort of audio output or filament transformer backwards to create the proper line voltage to run the clock. Maybe run the whole thing off a 12V battery with float charger for uninterruptible timing.
good luck Bob L. ________________________________ From: Cezary Rozluski <[email protected]> To: [email protected] Sent: Thu, March 10, 2011 4:54:37 PM Subject: [time-nuts] 50/60 Hz clocks ... Let us suppose I have Thunderbolt (I really have one) as a time/frequency source, but any other time-nuts recognized frequency source should by sufficient for the fun to drive old 50/60Hz stuff with the highest precision available (and for fun, comparable to www.leapsecond.com solution, modulo cesium/hydrogen clock). It would be very nice to see correction for leap seconds as well :-) :-) Regards, Cezary _______________________________________________ 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. _______________________________________________ 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.
