| 摘要 |
PROBLEM TO BE SOLVED: To provide a contact sensor that can solve a problem of a conventional contact sensor that sensing accuracy of the conventional contact sensor is comparatively low at a comparatively low sensing speed so as to sense a contact state at a high-speed with high accuracy. SOLUTION: The contact sensor has an electric circuit sensing a contact that consists of a comparator setting a reference voltage and a hysteresis voltage and of a logic circuit having a Schmitt trigger circuit.
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