| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a current sensor and a current detector comprising the current sensor, a drive circuit and a signal processing circuit capable of accurately detecting a magnetic field caused by minute current in the disturbance magnetic field, detecting the minute current and easily mounting on a circuit board in the current sensor using a magnetic impedance element. SOLUTION: The current sensor 1 has coils 6a, 6b energizing current to be measured, and the magnetic impedance elements 4a, 4b differentiating and detecting generated therefrom. The elements 4a, 4b comprise magnetic thin films formed on the same face of the same non-magnetic board 3, respective magnetic field detection directions are made the same direction, and they are arranged along the magnetic field detection direction in parallel. The coils 6a, 6b are wound in mutually reverse directions, and the magnetic field of the mutually reverse direction is applied on the elements 4a, 4b by energization of the current to be measured.</p> |
