• Welcome to our site! Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.

Temperature sensor circuit

Not open for further replies.


New Member
Plz i need help with this circuit design. I want to design a temperator sensor circuit that will be comparing the temperature of the surrounding with a fixed ref temperature. The output of the circuit should be logical high for temperatures less than 50'c and a logical low for temperature greater than 50'c. The temperature sensor to be use is Lm35D and the comparator should be Lm311. I'll appreciate your circuit diagram. Thanks


Well-Known Member
Most Helpful Member
Sounds like a class project. Your description is confused. Are you comparing the temperature of the LM35 to an ABSOLUTE reference, or to a second LM35 which is in a different thermal environment?
Not open for further replies.

EE World Online Articles