| 摘要 |
PROBLEM TO BE SOLVED: To obtain a high-frequency carrier magnetic sensor, enabling highly accurate detection by eliminating a negative feedback coil and a voltage/current converter circuit. SOLUTION: The high-frequency carrier magnetic sensor is constituted of a magnetic sensor element 10 and a circuit processing part 20 and a high-frequency current is supplied to the magnetic core of the magnetic sensor element 10, to detect changes in the impedance of the magnetic core due to an external magnetic field by circuit processing part 20. The circuit processing part 20 is constituted of an oscillation circuit 5, a rectifying circuit 8, a non-linear amplifying correction circuit 7 and an output part 8. In the amplification processing of output voltage due to the changes in the impedance of the magnetic sensor element 10, non-linearily of the output voltage is corrected by the non-linear amplification correction circuit 7 of the circuit processing part 20.
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