Full Member level 5
Hi guys, i have used AD595 in my home made soldering station, everything worked fine but when the solder cooled down for a long time then its temperature wasn't equal to the room temperature. my room temperature is 19 degree C, but AD595 was showing 30 degree C. then i figured out that problem is that it is enclosed in a box, there was one triac bt136 1 inch away from it and it was driving a 60W solder so it wasnt hot. transformer wasn't hot also as it was 3amps but driving a controller circuit only( big transformer just to make my box heavy). anyways when i opened the box and put some air through a fan, temperature dropped to 24 degree C. so i guess problem is with the reference temperature as its cold junction compensation doesn't wok in the box. so i figured that it has some extra pins and some of them are related to cold junction compensation but the datasheet didnt talk about it. so any idea how i can feed it with a reference temperature via lm35 or some other sensor?