Overheating protection circuit using lm358

Submitted by Don Fila on Mon, 12/06/2021 - 08:39

How to build op-amp amplifier for thermocouple that can switch 12v relay?

I have 2200 watt heating element with thermocouple embedded inside the heating element. I used triac and other components to control the low and highness of the temperature. But my problem is how to use thermocouple to detect the temperature of the heating element and turn off automatically when it get overheated and restart when it cool down