[time-nuts] Some More questions
Poul-Henning Kamp
phk at phk.freebsd.dk
Thu Jan 19 01:35:33 EST 2006
In message <43CF2281.4000304 at erols.com>, Chuck Harris writes:
>Didier Juges wrote:
>
>> One problem with that approach is that crystals that are not intended
>> for oven operation are optimized for minimum frequency change over 0-50
>> or some other "normal" environment temperature range, and at 75 degree C
>> or wherever you are going to run the oven at, the temperature
>> sensitivity might be much greater than around 25 degrees. So even though
>> the oven might reduce the temperature variation by a factor of 10 or
>> better, the overall frequency sensitivity may not improve by the same
>> factor..
>
>Of course, one could take a small Peltier device, and a resistance heater,
Peltier elements work both ways so save the heater.
--
Poul-Henning Kamp | UNIX since Zilog Zeus 3.20
phk at FreeBSD.ORG | TCP/IP since RFC 956
FreeBSD committer | BSD since 4.3-tahoe
Never attribute to malice what can adequately be explained by incompetence.
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