| 摘要 |
This current sensor is provided with: a bias magnet (30) which generates a bias magnetic field (Bb) that constitutes a synthetic magnetic field (Bs) with a current magnetic field (Bi) generated when a current to be detected flows in a path (70) for the current to be detected; and a magnetic detection element (20) that outputs sensor signals corresponding to the synthetic magnetic field. The bias magnet has: a bottom portion (31) having one surface (31a); an N-pole first side portion (32), which is provided on the one surface of the bottom portion, and which protrudes in the direction perpendicular to the surface direction of the one surface; and an S-pole second side portion (33), which is provided in a region of the one surface of the bottom portion, said region being different from a region where the first side portion is provided, and which protrudes in the direction perpendicular to the surface direction of the one surface, and which is disposed to face the first side portion. The magnetic detection element is disposed in a state wherein magnetic lines extending in the direction parallel to the alignment direction of the first and second side portions pass through the magnetic detection element. Consequently, deterioration of detection accuracy can be suppressed even if the attaching position of the magnetic detection element is shifted. |
