| 摘要 |
PURPOSE: An angle detecting device is provided to eliminate factors influenced by temperature variations by using two hall elements and to obtain an angle based on an output difference of the hall elements, thereby properly measuring minute angles. CONSTITUTION: An angle detecting device arranges hall elements in the inside of a magnetic field having uniform magnetic flux density, thereby detecting an angle by using the hall elements. The angle detecting device comprises a first sensor(15a), a second sensor(15b), a detecting circuit, and a circulation circuit. The first sensor and second sensors are arranged along an axis tilted toward a median parallel to a direction of a magnetic flux. The first and second sensors are composed of the hall elements. The detecting circuit obtains outputs of the first and second sensors when the median is tilted toward the direction of the magnetic flux at a predetermined angle. The circulation circuit obtains the angle based on the output of the detecting circuit. [Reference numerals] (AA) -Φaxis; (BB) +Φaxis
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