Very interesting the "switching bridge" technique of the AN266. Sure that it doesn't add the switching noise to the oscillator?
On Tue, Aug 14, 2012 at 10:49 PM, Brooke Clarke <bro...@pacific.net> wrote: > Hi Ron: > > Rick Karlquist knows about the HP E1938 Ovenized Crystal Oscillator that > makes use of isothermal design to achieve precision temperature control. > http://www.prc68.com/I/HPE1938.shtml > > Have Fun, > > Brooke Clarke > http://www.PRC68.com > http://www.end2partygovernment.com/2012Issues.html > > > Ron Ward wrote: > >> HI Robert: >> WOW! Thanks. >> I need to build a double oven for my thunderbolt and set it to about 50 >> Degrees C. >> >> I am really just trying to reduce the 24 hour temperature range. >> >> I am looking at an application note from National Semiconductor, AN 266, >> for a precision oven. It claims .001 degree C! >> >> The internal oven for the Trimble Oscillator is most likely not as good >> as the one featured in the application note. >> >> Any ideas? >> >> Thanks again, >> Ron >> >> -----Original Message----- >> From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On >> Behalf Of Robert Atkinson >> Sent: Tuesday, August 14, 2012 1:21 PM >> To: Time Nuts >> Subject: [time-nuts] Early WWV Oscillator >> >> Came across this when browsing >> >> \http://nistdigitalarchives.contentdm.oclc.org/cdm/singleitem/collection >> /p16009coll3/id/34 >> >> Robert G8RPI. >> _______________________________________________ >> 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. >> >> >> > > _______________________________________________ > 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.
