Wanted: schematic of (quartz) thermostat on the web
Peter L. Peres email (remove spam text)
Thanks, Scott ! (scroll down for more)
On Sat, 7 Nov 1998, Scott Newell wrote:
- many great pointers snipped -
Hmm. The ovens I had to do with had thermistor/transistor oven drive PLUS
thermistor/varicap compensator on the rock for startup performance.
> Just curious: will you be using an AT or SC-cut overtone rock?
I don't think it will be overtone. I'll have to read the relevant things
for a coherent answer. I'll go for a mid-range oscillator and make it as
good as possible, with options to use it as a PLL timebase etc.
I'd like to use an off the shelf crystal and correct for its misbehaviors
with (many ?) other standard components, preferrably all SMD, about the
size of the HC crystal case. I expect to spend a lot of time on this one
and learn a great deal about what can and cannot be done this way.
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See also: www.piclist.com/techref/index.htm?key=schematic+quartz
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