[time-nuts] Improving the stability of crystal oscillators

Neville Michie namichie at gmail.com
Thu Oct 11 16:07:09 EDT 2007

On 11/10/2007, at 10:23 PM, Bruce Griffiths wrote:

> If one uses resistive heating then some linearisation improves the
> performance as the heat from the heating element is proportional to  
> the
> square of the voltage across the heating element.

If you use a transistor as a heater, the full supply voltage is  
across the
element all the time, so heating is proportional to the current flowing.


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