| 摘要 |
PROBLEM TO BE SOLVED: To provide a technology of preventing reduction in an SN ratio of a current sensor in response to changes of the shape of a bus bar which is not to be measured.SOLUTION: A current sensor includes a first bus bar 2 to be subjected to current measurement, a second bus bar 3 which is not to be subjected to current measurement, and a magnetoelectric transducer 4. The second bus bar 3 is extended in parallel with the first bus bar 2. The center in a cross section when viewed from an extension direction is changed along the extension direction in a stepwise manner from a first position Cs1 to a second position Cs2. The magnetoelectric transducer 4 is located along the extension direction, closer to the second position Cs2 than the stepwise change position of the second bus bar 3. A magnetic sensitive surface 4d faces a side face of the second bus bar 3. The magnetic sensitive surface 4d is arranged orthogonal to a side face of the first bus bar 2. The magnetoelectric transducer 4 is located, when seen from the extension direction, closer to the first position Cs1 than a straight line LCs passing through the second position Cs2 and perpendicular to a side face 3c facing the magnetoelectric transducer 4. |
