| 摘要 |
PROBLEM TO BE SOLVED: To provide an integrated circuit allowing inspection of magnetic characteristics with no primary conductor provided.SOLUTION: The integrated circuit comprises: a magnetic detection circuit 13 generating a differential voltage according to a working magnetic field; cancel coils COILa, COILb, COILc, COILd generating a magnetic field according to current when the current flows therethrough; a measurement part u1 measuring the current flowing through the cancel coils COILa, COILb, COILc, COILd by a differential voltage generated in the magnetic detection circuit 13 at which the magnetic field generated by the measured current acts; an inspection part u2, when inspection current flows through the cancel coils COILa, COILb, COILc, COILd to generate an inspection magnetic field, measuring a differential voltage generated in the magnetic detection circuit 13 at which the inspection magnetic field acts; and a circuit setting part setting a first mode for connecting the magnetic detection circuit 13 to the measurement part u1, or a second mode for connecting the magnetic detection circuit 13 to the inspection part u2. |
