HI If you use a good wire wound pot and run it off of and oscillator EFC source (not all have them), the temperature effect is pretty much zero. You are using the pot as a ratio device.
A mechanical cap that is part of the heated region of the OCXO (the normal case) has already been taken into consideration when the OCXO set point is adjusted to compensate it. Bob > On Nov 4, 2016, at 3:34 PM, Hal Murray <[email protected]> wrote: > > > [email protected] said: >> The only practical way to set the 10811 or 10544 is with a >= 10 turn pot on >> the EFC. I never have worked out just why there are so many instruments that >> don’t have a pot on the EFC. > > How would temperature effect that? For that matter, how does temperature > effect the typical mechanical capacitor? Does anybody play fancy tricks to > cancel out the mechanical motions? (like the mercury pendulum - as the > pendulum rod expands the mercury expands in the other direction to keep the > CG the same) > > -- > These are my opinions. I hate spam. > > > > _______________________________________________ > 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.
