On 9/5/16 7:48 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.
You might look at inexpensive thermoelectric cooler/heaters - depending
on what temp range you want.
You could get a small electric icechest/heater and cobble up a
controller. They make ones that are designed to heat/cool something the
size of a 1 liter coke bottle..
TE technology has a wide variety of TE coolers and
controllers..Basically it's all about DC power supplies or power op amps
in one form or another.
http://tetech.com/
You can buy inexpensive 1/8 DIN PID controllers for about $20 online..
They will take all manner of input sensor, thermocouple, PRT,
thermistor, etc.
Look at the "homebuilt sous vide" folks.
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