John Oven did reduce in current and I can not imagine that it would be that close with an overheated oven. At 0 V it is within .5 Hz of what they normally are. Ground has no effect but even 0.8 V on pin 2 stops oscillation Once it stops it takes about 10 seconds to continue oscillation, about 0.1 Hz higher and within an other 10 seconds is within 2 E-10 back to the previous value. Bert In a message dated 8/9/2012 8:58:36 P.M. Eastern Daylight Time, jmi...@pop.net writes:
> In a message dated 8/9/2012 8:07:24 P.M. Eastern Daylight Time, > b...@lysator.liu.se writes: > > Hi Bert, > > So the EFC does not work at all? (or did I miss something obvious?) > > /Björn > > > The unit starts high and over 20 minutes comes down to 4.9999975 with 0 V > > on the EFC. Any voltage on pin 2 and it quits oscillating. > > Bert What happens to the current drain as the unit warms up? Does it fall off after 5-10 minutes as expected? If not, it sounds like the oven controller may be stuck on, overheating the crystal. I'd look into that possibility sooner rather than later. -- john, KE5FX www.miles.io _______________________________________________ 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. _______________________________________________ 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.