Has anybody tried using a thermoelectric cooler to maintain a TCVCXO at a constant temperature in lieu of using an OCXO?
I was thinking about this after reading some application notes in connection with constant temperature control using TECs with bipolar drive. The power required would be pretty low so I think a linear control circuit could be used avoiding the noise problems associated with a switching controller. Temperature sensor placement would be a challenge. I suppose as part of an automated calibration, the temperature could be adjusted over a few degrees from ambient to find any flat spots in the oscillator's ppm/C curve. One place I have run across this application of TECs is with laser diodes where coherence length depends on very tight temperature control. Typical laser diodes without temperature control have a coherence length of millimeters making them useless in more demanding applications like interferometry. _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
