Current sesnor, current measuring module, and smart meter

摘要

A current sensor comprises a plurality of magneotresistance elements and a first magnetic body. The plurality of magneotresistance elements each have their resistance value change by being applied with an current-induced magnetic field from a current to be measured. The first magnetic body applies a first offset magnetic field substantially parallel to the current-induced magnetic field applied to a first magneotresistance element of the plurality of magneotresistance elements. Moreover, a smart meter according to an embodiment of the present invention has, for example, the current sensor according to the present embodiment installed therein.