Thermocouple cold junction compensation amplifier circuit

Posted on Mar 28, 2007

AD587 precision voltage reference 10. OOV generated by 27kfl resistor added compensation diode IN4148 and the thermocouple, and to VI + N terminal of the differential amplifier provides a fixed operating point. Thermocouple output voltage to the differential

Thermocouple cold junction compensation amplifier circuit
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amplifiers feet, INA131 gain amplifier, the output voltage vo = IOO (upbraid -Va), once readers tune of 100 set in the future, the amount of change of the output voltage decided by Va. Thus, n can adjust the operating point of the amplifier.

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