| 摘要 |
<p>PROBLEM TO BE SOLVED: To solve the problems of a magnetic field generated by an electric current being too intense and exceeds the operating range of a magnetic detecting element used for a magnetic sensor in a conventional current sensor, and that the cost of a flat conductor is high since the flat conductor is provided with an opening part for opening the opening part in the flat conductor, arranging the magnetic sensor in the opening part, canceling the magnetic field in the opening part, and forming a micromagnetic field. SOLUTION: The current sensor 3 uses the magnetic sensor 1 with the magnetic detecting element and a magnetic detecting circuit, in combination. Since the micromagnetic field occurs in a Y-direction to the surface of the flat conductor 2, through which a current is passed, only the magnetic field in the Y-direction is detected. The width direction of the flat conductor 2 through which the current is passed is X, a direction in which the current is passed is Z, the direction of height is Y, and the center line of the surface of the flat conductor 2 is set to O. AT this time, that the Y-direction of the magnetic sensor 1 becoming the micromagnetic field is utilized, the magnetic sensor 1 is displaced from the center line O of the surface of the flat conductor 2, through which the current is passed and is arranged in a vertical direction in the vicinity of the surface of the flat conductor 2 to detect only the micro magnetic field in the vertical direction.</p> |
