| 摘要 |
PROBLEM TO BE SOLVED: To provide a sensor circuit of which the degradation in detection accuracy of a physical quantity of a measurement object can be suppressed.SOLUTION: A sensor circuit 100 includes: a first detection circuit 10 including a first resistance R1 and a first thermistor Rth1 affected by a physical quantity of a measurement object; and a second detection circuit 20 including a second resistance R2 having a resistance value substantially equal to a resistance value Rr1 of the first resistance R1, a second thermistor Rth2 on which the influence of the physical quantity of the measurement object is reduced, and a series circuit of an additional resistance R3 connected in parallel to the second thermistor Rth2 and an additional thermistor Rth3 on which the influence of the physical quantity of the measurement object is reduced. A resistance value Rthr1 of the first thermistor Rth1 and a resultant resistance value Rcb of the second thermistor Rth2, the additional resistance R3, and the additional thermistor Rth3 are substantially equal to each other when the first thermistor Rth1 is affected by the physical quantity of the measurement object. |
