| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide an electric current sensor having a wide current detection range and an excellent noise resisting property. SOLUTION: When magnetic flux H generated by a current flowing through a wire 2 is detected by using magnetometric sensors each having a magnetic impedance effect, two magnetometric sensors 1a and 1b are disposed on a substrate 3 so that the absolute values of their outputs in response to a detected current are equal to each other and the polarities of the outputs are reverse to each other. The difference between the two is detected by a detection circuit 5, thereby canceling extraneous noises.</p> |
