[time-nuts] Some More questions
cfharris at erols.com
Thu Jan 19 09:38:12 EST 2006
Poul-Henning Kamp wrote:
> In message <43CF928D.4030101 at erols.com>, Chuck Harris writes:
>> It would be interesting to see how such an oven performs compared
>> to the traditional double oven.
> According to a guy at the danish metrology lab, the optimal strategy
> is moving as little heat as you can get away with.
But that brings us back full circle: How do you do an exceptional
job of controlling the temperature of a crystal that was designed
to operate at 25C?
You cannot just leave it in a room temperature box, and expect it
to remain stable. You need to mimic what is done with a conventional
double oven, only with an "ambient" temperature that is well below the
desired operating point of the crystal. The Peltier would provide
that reduced "ambient" temperature.
I read the article you are talking about, and what he says is true,
to a point. He is talking about maintaining the stability of
instruments that are designed to run at room temperature. These
instruments already have conventional double ovens around their
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