Expo conv. heater (tomg et al.)

[Paul Perry]

>>3. How do you know where to set the temperature trim on the thermostat?
>I mean, how do you know where to set the temperature and how do you
>measure a silicon chip's temperature accurately anyway? Not having the
>temp too high or low was discussed, so this is important.
>
The word of God (Jim Williams):
"Q2's base-emitter junction senses array temperature" but read the National
 app notes for the full story.. no shortcuts on this one.

paul perry frostwave P/l Melbourne Australia