[time-nuts] Chronometer contest sponsored by IEEE Spectrum
Chuck Harris
cfharris at erols.com
Sat Dec 1 14:44:56 UTC 2007
Hi Max,
I haven't seen a quartz watch with a trimmer capacitor
in something like 20 years.
What they do now days is use a microprocessor with flash ram, and
the timing machine reprograms the microprocessor's second counter
to trip at the right time.
-Chuck Harris (amateur watchmaker)
Max Robinson wrote:
> In my experience watches come from the factory adjusted to gain about 5
> seconds a month. The ones I have owned over the years seemed to be fairly
> stable in that. I have always wished there was a way for someone who is not
> a watch maker to open up such a watch and turn the trimmer capacitor, there
> has to be one, to set it right on. Then it would be much easier to tell how
> the crystal is aging.
>
> Regards.
More information about the Time-nuts_lists.febo.com
mailing list