[SML] power line clock question

[Dan Sheehan]

None of the above in the house (or, I guess, in this residential area, near
midnight);
15 minutes worth, in just a few hours, would be LOTS of stray cycles,
and clocks don't show any long-term drift
but short-term wander of power-cycle-counting clock,
 vs clock supplied with time reference, eg cable)
is quite evident, could be +/-10 seconds in a day but
don't think I've ever ever seen total long-term over 20.

So I guess the power co is still inserting TEC's..

On Wed, Jun 12, 2019 at 12:08 PM Jerry Durand via Stagecraft <
stagecraft at theatrical.net> wrote:

> Depending on the type of clock, an arc, series wound motor, big dimmer on
> the line.  If they count line cycles they would see extra events.
>
> On 6/12/19 5:40 AM, Dan Sheehan via Stagecraft wrote:
>
> What kind of a power line event could cause
> *three* clocks to show power failure AND all be approx 15 minutes *ahead*
> of time?
>
> --
> ...Dan Sheehan
> Fixer of things that break
> TD Walpole (MA) Footlighters
>
>
> --
> Jerry Durand, Durand Interstellar, Inc.www.DurandInterstellar.com
> tel: +1 408 356-3886
> @DurandInterstel
>
>
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-- 
...Dan Sheehan
Fixer of things that break
TD Walpole (MA) Footlighters
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