[time-nuts] Rb cooling
Charles P. Steinmetz
charles_steinmetz at lavabit.com
Mon Jul 18 04:57:05 UTC 2011
Chuck wrote:
>Cooling down an oven is not a good thing, as it simply ups the
>power the oven control circuitry dumps into the oven to keep it
>hot.
The temperature, thermal mass, and conductivity of the surroundings
determine how quickly an oven cools down when the heater is off. Too
little cooling, and the oven control loop cannot do its job
properly. As others have said, rubidium oscillator manufacturers
specify them for operation within a certain range of baseplate
temperatures. Best performance is often obtained near the middle of
the specified window.
Best regards,
Charles
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