| 摘要 |
<p>In this current sensor, a plurality of magnetism-sensitive elements are disposed at equal intervals on an imaginary circle centered on the center axis of a current path through which a current to be measured flows. The current sensor reduces the effect of a disturbing magnetic field, and can increase the precision of measuring the current to be measured. The current sensor (1) is characterized by being provided with: a plurality of magnetism-sensitive elements (12) that are disposed at equal intervals on an imaginary circle (C) in a plane perpendicular to the center axis of the current path (11) through which the current to be measured flows and centered on the center axis, and that each have a first sensitivity axis (121) and a second sensitivity axis (122) perpendicular to the first sensitivity axis (121); and a computation circuit that computes the current value flowing through the current path (11) on the basis of the output of the plurality of magnetism-sensitive elements (12). The current sensor (1) is further characterized by the direction of the first sensitivity axis (121) of the plurality of magnetism-sensitive elements (12) being parallel to a tangent line to the imaginary circle (C), and the direction of the second sensitivity axis (122) of the plurality of magnetism-sensitive elements (12) being parallel to the direction of the center axis.</p> |
