[time-nuts] Frequency referenced temperature regulator

[Scott Newell]

At 09:04 AM 11/8/2010, Poul-Henning Kamp wrote:

>1. Mount a X-tal-osc with really lousy tempco inside the enclosure.
>
>2. Compare its output to a stable reference frequency.
>
>3. Use the output of the phase comparator to drive the Peltier.
>
>It is basically a PLL where temperature is used as EFC...
>
>Has anybody tried that ?

I think Jim Williams did a quartz based thermometer in one of the old 
LTC app notes.  I *think* the crystal manufacturer and part number 
was spec'd in the note.

-- 
newell  N5TNL