| 摘要 |
<p>PROBLEM TO BE SOLVED: To widen a uniform magnetic field area of a gap, and to easily avoid magnetic saturation, while reducing a size and a cost. SOLUTION: This circuit comprises a tripod magnetic path constituted by bending foldingly magnetic sheet members 1, 2, and is provided with a gap 7 for inserting a magnetic sensor in a central leg part 4. The magnetic sheet members 1, 2 of the central leg part 4 are formed into a divided shape to form the gap 7, both divided end parts 5, 6 of divided end parts are arranged in parallel to overlap their side faces each other with the interposed gap 7, and the height for the both divided end parts 5, 6 is made lower than those of the magnetic sheet members 5, 6 in other portions in response to a uniform magnetic field area Sg of the gap 7.</p> |
