5 Apr
2001
5 Apr
'01
11:27 a.m.
On Thu, Apr 05, 2001 at 08:53:53AM -0500, John Foust wrote:
Pendulums could be sync'd by starting their swing
at the
same time by a pulse on a control line (which would release
a catch that had held the pendulum at top-swing), and they
could be re-sync'd and their swing regenerated with a well-timed
pulse to an electromagnet at the apogee of the swing-path.
That sounds pretty cool. Maybe someday it'd be fun to build a slave
grandfather clock, with the pendulum driven that way instead of by
weights. Has anything like that been built commercially?
I've got some old solenoid-driven slave clocks which I intend to drive
using something fairly modern (probably a Dallas Semiconductor TINI)
but these get one pulse per minute to advance the hands; I haven't seen
such clocks with pendulums.
--
_______ Shawn T. Rutledge / KB7PWD ecloud(a)bigfoot.com
(_ | |_) http://www.bigfoot.com/~ecloud kb7pwd(a)kb7pwd.ampr.org
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