); SAEximRunCond expanded to false Errors-To: [EMAIL PROTECTED] RETRY I bought 10kohm nominal NTC thermistors from Digikey, P/N 490-4653-ND. They are very small, 1/10th of an inch long or so.
I have used those (or similar parts) in projects both at home and at work (in military equipment...) for about 15 years. Didier KO4BB > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf Of [EMAIL PROTECTED] > Sent: Wednesday, October 10, 2007 1:17 PM > To: [email protected] > Subject: Re: [time-nuts] Improving the stability of crystal > oscillators > > In a message dated 10/10/2007 11:13:21 Pacific Daylight Time, > [EMAIL PROTECTED] > writes: > > >We first built a small proportional heater circuit that we > could shove > >in next to the crystal, and that worked OK. We finally found a > >source for thermistors spot welded to a spring clip that > would mount > >snugly directly to the crystal case. With 12 volts applied, these > >heated the crystals very nicely. With the heaters, we were able to > >keep the systems running year round with about 1/10 the > service calls. > > Hi John, > > interesting anecdote! > > Would you know if the thermistors are still available? Who made them? > > Thanks > Said > > > > > > > > > ************************************** See what's new at > http://www.aol.com _______________________________________________ > 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.
