Hi If you pick one holder, 5 MHz will be “best”. If you pick another holder, 2.5 MHz will be “best”. Pick another one and it will be 20 MHz ….
Bob On Nov 1, 2013, at 10:12 PM, Tom Knox <[email protected]> wrote: > A while ago I mentioned 5MHz oscillators were used in most metrology > applications compared to the more commonly available 10MHz because 5MHz was a > sweet spot for quartz. At the time I didn't know why. I finally had a chance > to ask the person I learned this from why. The main reason is simply physical > size. The larger crystal lattice allows many manufacturing advantages that > allow for a higher Q. He also explained I was wrong in an earlier statement, > metal/quartz migration on quartz oscillator was not a major problem even > after decades, but could become more of a factor if driven hard. That does > not mean the deposition and lead bonding has no negative effect. The BVA > solves this by capacitive coupling the quartz rather then direct metal > deposition. > > Thomas Knox > > > > _______________________________________________ > 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.
