| 摘要 |
PROBLEM TO BE SOLVED: To provide a magnetic field detecting element integrated on a printed circuit board excellent in aspects of mass productivity and an expense, capable of minimizing leakage of a magnetic flux by constituting a closed magnetic path, while formed into an ultra-small size, and having a highly sensitive characteristic through magnetic field detection using differential drive. SOLUTION: This magnetic field detecting element is provided with two rod-like flexible magnetic core bodies in a PCB substrate, and is provided with an exciting coil of a metal film to constitute coupling type structure having structure with the both rod-like bodies wound "8"-shapedly, or separated type structure having a shape with the respective rod-like bodies wound separately. A magnetic field change detecting coil of a metal film is provided to constitute structure with the both rod-like bodies wound solenoid-likely at once, layeredly on the exciting coil, or structure with the respective rod-like bodies wound separately. COPYRIGHT: (C)2007,JPO&INPIT |
