[time-nuts] Temperature control/isolation of T-bolts...

[Michael Baker]

Time-Nutters--

Some years ago I ran some experiments trying to improve
on the temperature control of a circuit board with a reference
oscillator and other heat producing items on it.   I quickly
discovered that enclosing it in a small Styrofoam container
jacked the temperature up wy to high.Eventually, I tried
putting it in a large picnic sized Styrofoam container.   This
worked much better.   The inside temperature did go up,
but not so much as to be a problem.   At some point the size
of the container provided enough heat loss so as not to
overheat the circuitry but also provided a lot of thermal
isolation from ambient room temperature changes.  I
monitored the inside temperature of the Styrofoam box
with an HP-Agilent precision lab-grade quartz thermometer
borrowed from the physics lab at the Univ of Flori-DUH.

Mike Baker
--




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Re: [time-nuts] Temperature control/isolation of T-bolts...

[Hal Murray]

mp...@clanbaker.org said:
 Eventually, I tried putting it in a large picnic sized Styrofoam container.
  This worked much better.   The inside temperature did go up, but not so
 much as to be a problem.   At some point the size of the container provided
 enough heat loss so as not to overheat the circuitry but also provided a lot
 of thermal isolation from ambient room temperature changes

Did you have anything else in the box to increase thermal mass?  Water?  
Bricks?  Cast iron?


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