Email still seems to not be getting through - it seems like sending
twice works sometimes. Here this one goes again - sorry if it shows up twice:
I presume you used the regular 74HC04 or 74HCU04 inverter, not the
74HC14 Schmitt trigger input type?? If the '14 is actually used, that
may explain the problems around setting the feedback biasing resistor
value - you may be overriding the built-in hysteresis to get it in
the linear region. Usually that R isn't very critical with regular
crystals, but maybe tuning fork types need more gain, or, if it's
actually a '14, the input impedance is probably lower than a regular
gate, so it's loading the resonator.
Ed
_______________________________________________
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.