Unlike the previous circuit this one trigger when the temperature drops below the set value. The circuit is from June 1986 Radio Electronics magazine.
This circuit was found in documentation from the 1980s. The circuit can be designed based on...
This circuit uses two operational amplifiers, which can be of the type 741, in a full wave...
Other series operational amplifiers, such as MC34072, MC34074, MC35071, MC35072, MC35074 d MC33071...