发明名称 |
Magnetic switch capable of instantaneous switching of an output signal and magnetic sensor |
摘要 |
A magnetic switch using magnetoresistive elements having respective free layers whose magnetization directions are varied by an external magnetic field. The magnetic switch also has a first magnet and a second magnet that produce respective magnetic fields that serve as the external magnetic field and are different from each other in strength and opposite to each other in direction, and a magnetic shield member whose relative position with respect to the first magnet and the second magnet varies. The magnetic shield member moves between a first position with which both of the magnetic fields of the first magnet and the second magnet act on the magnetoresistive elements to magnetize their free layers in a first direction and a second position with which only one of the magnetic fields of the first magnet and the second magnet acts on the magnetoresistive elements to magnetize their free layers in a second direction that is opposite to the first direction.
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申请公布号 |
US6900713(B2) |
申请公布日期 |
2005.05.31 |
申请号 |
US20020215735 |
申请日期 |
2002.08.09 |
申请人 |
ALPS ELECTRIC CO., LTD. |
发明人 |
KASASHIMA MASAO;TOKUNAGA ICHIRO;OKUMURA HIROFUMI;KIKUCHI SEIJI |
分类号 |
G01R33/09;H01H36/00;H01L43/08;H03K17/97;(IPC1-7):H01H9/00 |
主分类号 |
G01R33/09 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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