[time-nuts] Oscilloquartz 8601 Rebuild Question

[J. Forster]

[snip]
>> That will give you a static match, not necessarily a dynamic match.
>> Consider if you filled the Dewar with mercury.
>>
> Certainly a thermos of mercury would have much different thermal
> behaviour than an oscillator, but I don't have a thermos of mercury.  I
> think what you're getting at is whether my replacement thermal system
> has similar dynamic thermal characteristics to the original.

Yes. You should, IMO, try to match the heat leak and the thermal inertia
to keep the loop dynamics the same.

> Unfortunately, there's no way for me to test that since the original is
> smashed.  Static comparison is all I can do.

You can try to keep the Dewar internals as near as possible to the
original. That and the leakage should roughly do it.

Best,

-John

=============


>>> Of course, if you go too far in reducing the current, the oven could
>>> overheat.  The oscillator includes a precision thermistor to monitor
>>> the
>>> temperature of the oven to prevent this.
>>>
>>> Any comments?
>>>
>>> Ed
>> Good luck.
>>
>> -John
>>
> Thanks.  This is turning into an interesting project.
>
> Ed
>
>
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