On 2012/01/22 14:56, Don Latham wrote:
NICE!
Measure the resistance of the coil, and see what the current would be
with the voltage you want to use. Figure out what the current might have
been in the original installation. Ebay has an installation manual at
auction for these clocks, may have a description of the driving circuit.
I hate to pay twenty bucks for a PDF, or to pay twenty bucks just to find out.
If it's anything like this:
http://electric-clocks.com/SWCC/
... it doesn't say. The winding battery, and the setting signal, were supplied,
and the installer didn't need to know the specs. But, then again, I can't
afford to experiment too broadly and damage my museum piece. I think the guy
who recently cleaned and repaired the movement tested this coil. I'll call him
back and ask what he put on it.
In extremis, measure or estimate the coil wire size and calculate the
heat loss for the actuated time with the voltage you want to use.
Don
_______________________________________________
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.
