| 摘要 |
PROBLEM TO BE SOLVED: To provide a current sensor device allowing cost reduction while avoiding malfunction in current detection caused by external magnetic field.SOLUTION: The current sensor device is a coreless type current sensor device, and includes a magnetic detection element which detects a magnetic flux generated in a current path, and a magnetic shield unit which shields an external magnetic flux applied to the magnetic detection element provided around thereof . The magnetic shield unit includes a first magnetic shield section comprising a first magnetic shield material having a first relative permeability, and a second magnetic shield section comprising a second magnetic shield material having a second relative permeability different from the first relative permeability.SELECTED DRAWING: Figure 2 |
