Differential Temperature Sensor

Differential temperature sensor is used to measure temperature difference in two different area.  Here is the schematic diagram of the circuit:

Differential temperature sensor circuit schematic diagram

Please note that the connection from pin 2 to pin 3 of LM308 shouldn’t be  there, just break the connection so we get valid configuration like as we see in other differential amplifier.  [Source: STMicroelectronics Application Note]

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