[time-nuts] Low noise quartz crystal oscillator by Bruce Griffiths

Richard (Rick) Karlquist richard at karlquist.com
Mon Nov 9 23:22:32 EST 2015


>
> Driscoll wrote a lot about oscillators over the years.
> I couldn't find anything specific to discontinuous operation.
> Do you have a titel of a paper related to this?

What Driscoll was talking about was self limiting in a
transistor.  That is discontinuous operation, although
Driscoll doesn't call it that.  His earliest papers on
this circuit go back to around 1972, and are in either
UFFC proceedings and/or FCS.  Many later papers cite
these.

>
>> The 2 transistor "Driscoll oscillator" fixes this problem
>> by using an additional stage that limits instead of the
>> oscillator transistor.
>
> Is the Burgoon patent you are refering to US4283691
> "Crystal oscillator having low noise signal extraction circuit" ?

Yes.



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