There are cheap GC (gas chromatograph) ovens on eBay. They are
well-insulated and give you fast, precise temperature control. Some of
them are designed with a liquid nitrogen input for cooling. Otherwise,
you can use dry ice. I saw one mentioned on one of the mailing lists I
read, maybe this one, a few months ago. I meant to buy one, but got
side-tracked. Unfortunately, I can no longer recall the brand.
Brent
On 9/5/2016 8:48 PM, Richard (Rick) Karlquist wrote:
As we all know, step #1 in making a clock is NOT
to build a thermometer :-)
I thought I would check the brain trust here to see
if anyone has seen a hobbyist grade temperature
testing chamber or kit or homebrew design. I
have some crystals, oscillators, and other
electronics I would like to characterize over
temperature. I know this reflector has discussed
homebrew stabilization ovens; however, they
have tended to have very long time constants
(which makes sense for that application). I
need to be able to change temperature in a
reasonable amount of time, and I don't need
extreme stability. Looking for any ideas,
maybe in the "maker" spirit. I think the
size I need would be perhaps 1/2 the size
of a shoebox.
BTW, in case someone has a chamber to sell,
let me know...
Rick Karlquist N6RK
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