[time-nuts] Improving the stability of crystal oscillators

Bruce Griffiths bruce.griffiths at xtra.co.nz
Thu Oct 11 17:08:34 EDT 2007

Neville Michie wrote:
> 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.
> Neville

However using a transistor has the disadvantage of a small area heat
source rather than the large area heat source possible with a heater
Using a small area heat source produces significant temperature gradients.


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