[time-nuts] Improving the stability of crystal oscillators

SAIDJACK at aol.com SAIDJACK at aol.com
Wed Oct 10 14:39:27 EDT 2007

In a message dated 10/10/2007 11:34:43 Pacific Daylight Time, jra at febo.com  

>heater design: http://www.febo.com/hamdocs/d4art.html.  The  quality of
>the heater schematic isn't very good, but it's all I  have.


Thanks John!
BTW: I wonder how much effect thermistor and resistor-bridge aging as well  
as opamp offset drift has on the long term aging of typical OCXO's since it 
will  shift the temperature setpoint of the crystal.
I think this is an issue that's not receiving a lot of attention in the  

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