Hi Atilla, I dont have book availabe but AT cut is a thickness-shear vibration mode so plate area may not be an issue ?? Just harder to make :-)) Alan
--- On Tue, 13/3/12, Attila Kinali <[email protected]> wrote: > From: Attila Kinali <[email protected]> > Subject: [time-nuts] quartz crystal configuration in small cases > To: [email protected] > Date: Tuesday, 13 March, 2012, 17:26 > Hi, > > I have been reading up on quartz crystal oscillators in the > past few > weeks. Something that i couldn't figure out until now is > what kind of > configuration the small crystals use. > > If you read all those documents on quartz, they all show the > oscillator > "core" as a round plate, approximately 1.4cm diameter, one > side, maybe > both sides rounded (like [1]). That's all nice and good, but > those > crystalls fit only into the large cases. Even a HC-49/US has > not enough > space for such a plate. And the SMD cases are even worse. > > Unfortunately, my google skills failed me on finding any > information > on how the configuration of the crystal in those small cases > look like > and what oscillation modes they use. > > Would someone be so kind and give me a few pointers on > this? > > Thanks in advance > > > Attila Kinali > > [1] http://flaggedrevs.labs.wikimedia.org/wiki/File:InsideQuartzCrystal.jpg > > > -- > The trouble with you, Shev, is you don't say anything until > you've saved > up a whole truckload of damned heavy brick arguments and > then you dump > them all out and never look at the bleeding body mangled > beneath the heap > -- Tirin, The > Dispossessed, U. Le Guin > > _______________________________________________ > 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.
