crystal oven cct?
Mike Hardwick email (remove spam text)
Thermal control hardware can be simplified if you have a micro in the
system... Use a DS18S20 or similar temp sensor (takes one I/O pin) and a
software-controlled heater (one more I/O pin). The heater can be a cheap
power transistor in a constant-current circuit (with another small
transistor). With some attention in software to thermal delay, etc., you
can get excellent results with this approach. A PWM generator can
"linearize" heater response...
Mike Hardwick, for Decade Engineering -- <http://www.decadenet.com>
Manufacturer of the famous BOB-II Serial Video Text Display Module!
http://www.piclist.com hint: To leave the PICList
In reply to: <firstname.lastname@example.org>
See also: www.piclist.com/techref/index.htm?key=crystal+oven+cct
You must be a member of the
piclist mailing list
(not only a www.piclist.com member) to post to the