From: Bruce Griffiths <[EMAIL PROTECTED]> Subject: Re: [time-nuts] Improving the stability of crystal oscillators Date: Fri, 12 Oct 2007 10:08:34 +1300 Message-ID: <[EMAIL PROTECTED]>
Hej Bruce and Neville, > 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 > > > 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 > winding. > Using a small area heat source produces significant temperature gradients. Using a single transistor yes. Spread out transistors can provide significantly less gradients. Cheers, Magnus _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
