CURRENT SENSOR

摘要

A current sensor (1) that is used to detect a current that flows through a bus bar (100) includes: a base (10) that is attached to the bus bar (100); a magnetic thin film (20) that is mounted on the base (10); a luminescent device that irradiates light to the magnetic thin film (20); a photoreceptor device that detects light that is irradiated from the luminescent device to the magnetic thin film (20) and that is reflected from the magnetic thin film (20); a differential amplifier that converts an optical signal, detected by the photoreceptor device, into the current that flows through the bus bar (100); and an accommodation member (30) and pins (40) that restrict relative rotation of the magnetic thin film (20) with respect to the bus bar (100).