https://www.google.com/patents/US6166608 "Thermo-electric cooled oven controlled crystal oscillator "
http://www.google.com/patents/US8653897 "Devices, systems, and methods for controlling the temperature of resonant elements " On Fri, May 13, 2016 at 4:15 AM, David <[email protected]> wrote: > 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 -- [email protected] > To unsubscribe, go to > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. > _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
