| 摘要 |
A position detector includes a magnetic recording medium on which a prescribed magnetic pattern has been formed, a magnetoresistive element the amplitude value of which varies in response to the magnetic pattern, an amplifier for amplifying the output of the magnetoresistive element, the offset voltage of the amplifier output being variable, and output observing element for observing the output of the amplifier. The offset voltage of the amplifier is set based upon the results of observation provided by the output observing element. Adjustment of the offset voltage is thus set automatically. <IMAGE> |
