Bruce Griffiths wrote:
If the trimmer in in series with the crystal and not shunted by another
capacitor then the crystal will no longer control the oscillator frequency.
0.1pF or 0.01pF in series with a tuning fork crystal instead of the
nominal value (20pf?) will make a singnificant difference.
Thanks for the idea of the ferrite rod.
Bruce
Thank you. I guess thats a possible failure mechanism, though if there is no
control, I'd doubt it would keep 98 % accurate. I would have expected it to stop.
Dave
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