Heat Sensor Circuit using LM741

  
The following page outlines detail information on how to step by step design a Simple Heat Sensor Circuit. This circuit design utilized LM741 as the operational amplifier.

Heat Sensor Circuit using LM741 - img1

Circuit Parts/Components List: Re1 = 12V relay R1 = 47K R2 = 150 390K R3 = 1K8, R4, R5 = 2K2 P1 = 50K Trimmer Pot IC1 = LM741, LM741CN-ND, LM741CN, NE741, μA741, etc. Q1 = 2N2222 2N2222 2N3904-ND D1 = 1N4148 Th1 = 10K



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