| 摘要 |
PROBLEM TO BE SOLVED: To provide a magnetic impedance effect micro-magnetic sensor the temperature characteristic of which is stabilized and, at the same time, the power consumption of which can be reduced. SOLUTION: A magnetic impedance effect micro-magnetic sensor is provided with a head 2 which is excited in the peripheral direction by a pulse conducting current and is made of a magnetic material having high magnetic permeability, a coil 5 wound around the head 2 in the peripheral direction, and an electronic switch 4 which detects the first pulse of the voltage induced in the coil 5. Therefore, the temperature characteristic of the sensor can be stabilized and, at the same time, the power consumption of the sensor can be reduced. In addition, the sensor can obtain a high-linearity hysteresis-free magnetic field sensor characteristic due to a negative feedback effect.
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