| 摘要 |
A magnetic detection apparatus can reduce the cost of production to a substantially extent. The magnetic detection apparatus includes a magnetic movable element ( 1 ) having a first groove ( 1 a) and a second groove ( 1 b) that are different in diametral depth from each other, a magnetoresistive segment ( 3 a) that is arranged apart from the magnetic movable element ( 1 ) so as to come in opposition to the first and second grooves ( 1 a, 1 b) in accordance with the moving magnetic movable element ( 1 ), a magnet ( 5 ) that is arranged in the vicinity of the magnetoresistive segment ( 3 a) for applying a magnetic field thereto, and a processing circuit part ( 4 ) that generates different output signals in accordance with a change of the magnetic field applied to the magnetoelectric conversion element ( 3 a) which is caused in accordance with the first and second grooves ( 1 a, 1 b) in opposition to said processing circuit part ( 4 ).
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