Re: Clock runs way too fast

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Yes, like you stated the first time. <grin> Although it is also a good point if it is on the mains 24/7, the battery won't play a part at all. Like mine is on an UPS and it will run the clock without power for weeks or months (computer powered down of course). Although in my case, I do hit the power strip (from the output side of the UPS if I am not using my computers. So mine uses the battery to run the clock for about 8 hours a day.

--
Bill

"db" <databaseben.discussions.microsoft.com> wrote in message
news:%23CwsWOTgHHA.5052@xxxxxxxxxxxxxxxxxxxx
interesting.

so the synopsis is: Just replace
the motherboard battery?


"BillW50" <BillW50@xxxxxxx> wrote in message
news:OFSNC6SgHHA.3676@xxxxxxxxxxxxxxxxxxxxxxx

Well it is a bit more complicated than that. The simplest
oscillator is
a cap and a coil in parallel. Give it a quick zap and it will
oscillate
at a frequency determined by the values of capacitamce vs.
inductance.
The oscillations will stop from loses without being refreshed by
more
timed zaps.

Piezoelectric is like this (found in digital clocks), but it is
like a
cyrstal rock between two metal plates. Smack it with a hammer (like
in
those electric cigarette lighters), they will kick back with a
voltage
(spark). Although kick it with a quick voltage spike and they
vibrate.
And this vibating (oscillations) causes voltage oscillations as
well.
And the lower the voltage, the weaker but faster oscillations they
produce. Thus cystal control clocks runs faster as the battery gets
weaker. Well until they get so weak that they can't cause it to
vibrate
anymore.

--
Bill



"db" <databaseben.discussions.microsoft.com> wrote in message
news:eXs5jkSgHHA.4156@xxxxxxxxxxxxxxxxxxxx
> his response is a pretty good one but
> beyond the scope of mortals.
>
> if i recall the formula is something like
> when Voltage = Resistance x Current.
>
> so if v decreases it is likely due to r decreasing.
>
> therefore, the unregulated frequency of C is affecting the crystal
> and the time to
> speed up then eventually slow down to
> a halt.
>
> Not unlike a sun becoming a quasar then a blackhole.
>
> Honestly, Bob... Stop showing off...!
>
> "BillW50" <BillW50@xxxxxxx> wrote in message
> news:%23FU$eVSgHHA.3388@xxxxxxxxxxxxxxxxxxxxxxx
> "Bob I" <birelan@xxxxxxxxx> wrote in message
> news:u%23aX0jRgHHA.3372@xxxxxxxxxxxxxxxxxxxx
> > Sounds like a out of spec crystal on the motherboard. But
here is
> the
> > frequency setting.
> >
> > http://www.pctools.com/guides/registry/detail/985/
> >
> > JJ wrote:
> >
> >> My computer clock is running 1 minute fast every three
hours. It
> >> syncronizes at most once a day at 'nist1-ny.WiTime.net'. The
two
> >> other sites were always giving errors when trying to
syncronize.
> >>
> >> Is there some way to syncronize much more frequently? Do I
need
> to
> >> use another site?
> >>
> >> Thanks
>
> Nice one Bob! But 99% of the time, a fast running clock means
the
> CMOS/Setup/Clock battery is running low. As the lower the
voltage,
> the
> faster the clock runs. Although the fanciest syncronizer in my
mind
> is
> the free Dimension 4. It shows a history and everything.
>
> http://www.thinkman.com/dimension4/
>
> --
> Bill

.

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