Yahoo for real voltage power and current. Teletype style. Yes indeed the old loop currents seriously worked. No AA batteries here. ;-)
When will we see a pix of this unit?? Regards Paul WB8TSL On Sat, Jan 21, 2012 at 9:25 PM, Brooke Clarke <[email protected]> wrote: > Hi Jim: > > There are a number of options. > > Ken's clock clinic sells what appears to be a No. 6 Battery that has a > synchronization function for the Western Union clocks. > But the problem with it and the drivers for slave clocks is that they use > fairly low voltage circuitry. > > Stock Tickers and Teletype machines are tpically run with loop voltages in > the 60 to 200 Volt range. > > Have Fun, > > Brooke Clarke > http://www.PRC68.com > http://www.**end2partygovernment.com/**Brooke4Congress.html<http://www.end2partygovernment.com/Brooke4Congress.html> > > > Jim Hickstein wrote: > >> I have a Spectracom 8170 in the living room (who doesn't?), and a Western >> Union time-service clock, a.k.a SWCC clock -- a nice one, in a 3-foot-high >> wood case. I've been watching TV with this combination for years and years >> but never got around to feeding a pulse from the 8170 to discipline the >> other one. Now that Western Union no longer provides the service. :-) But >> it just begs to be done. >> >> I did draw up a TTL circuit, once (on a napkin, naturally, which I have >> now misplaced), that could live inside the 8170. I figured out the minimum >> number of inputs needed to detect when the MM:SS LED displays said 00:00 >> (for one second). It would close a relay, which could feed the >> winding-battery power to the hour-set solenoid down a pair of wires from 10 >> feet away. But I never built it. >> >> A little over a year ago the TS clock was getting gummy and free-running >> slower and slower, so I sent it to the clock hospital. It's back and >> free-running nicely, so maybe it's finally time I did this. Anyone got a >> better idea than my little TTL circuit, on a breadboard inside the 8170? >> I'd like to get it across the rear panel without cutting a new hole, if I >> can avoid it. But maybe the right connector would do. Another time-code >> receiver in the TS clock, e.g. a GPS module that provides a relay closure >> for 1 second on the hour (if such exists) might be neater. But the living >> room faces north. >> >> ______________________________**_________________ >> time-nuts mailing list -- [email protected] >> To unsubscribe, go to https://www.febo.com/cgi-bin/** >> mailman/listinfo/time-nuts<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<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.
