| 摘要 |
PROBLEM TO BE SOLVED: To provide an interface circuit of a Hall element and a detection system using it capable of detecting magnetism accurately regardless of a specification of the Hall element to be used, reducing a heating value in the Hall element, and improving reliability. SOLUTION: This interface circuit 30 of the Hall element interposed between the Hall element and a controller or a bus connectable to the controller is constituted by providing a power supply circuit 31 such as a series regulator for generating a driving voltage to be applied to the Hall element 10, and a comparator or an operation amplifier as a current detection means 32 for detecting a change of a current flowing in the Hall element and outputting a detection result. COPYRIGHT: (C)2006,JPO&NCIPI
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