| 摘要 |
<P>PROBLEM TO BE SOLVED: To effectively suppress the influence of noise in a current sensor which detects a current on the basis of differential values of magnetic vectors in directions opposed to each other for an inductive magnetic field arising from a measurement target current. <P>SOLUTION: A current sensor includes: a first magnetic sensor 101 and a second magnetic sensor 102 which detect magnetic vectors in directions opposing to each other for an inductive magnetic field arising from a measurement target current and output an output signal, a differential amplifying circuit 103 for outputting a differential between an output signal of the first magnetic sensor 101 and the output signal of the second magnetic sensor 102, first wiring 104 for electrically connecting an output terminal of the first magnetic sensor 101 and an input terminal of the differential amplifying circuit 103, and second wiring 105 for electrically connecting the output terminal of the second magnetic sensor 102 and the input terminal of the differential amplifying circuit 103. The current sensor makes the wiring capacities of the first wiring 104 and the second wiring 105 almost the same. <P>COPYRIGHT: (C)2012,JPO&INPIT |
