Current sensor

摘要

A current sensor includes semi-annular first and second magnetic cores, first and second sensors, and a differential output part. The first magnetic core is provided around a wire in which an electric current flows and includes a pair of first magnetic core parts each having a quarter annular shape. The first sensor is provided in the gap between the first magnetic core parts and detects a magnetic flux. The second magnetic core is provided around the wire and includes a pair of second magnetic core parts each having a quarter annular shape. The first and second magnetic cores form an annular magnetic core. The second sensor is provided in the gap between the second magnetic core parts and detects a magnetic flux. The differential output part outputs the differential output of the outputs of the first and second sensors.

主权项

1. A current sensor, comprising:
a semi-annular first magnetic core comprising a pair of first magnetic core parts each having a quarter annular shape, provided around a wire in which an electric current flows; a first sensor provided in a gap between the first magnetic core parts and configured to detect a magnetic flux; a semi-annular second magnetic core comprising a pair of second magnetic core parts each having a quarter annular shape, provided around the wire, wherein the second magnetic core forms an annular magnetic core with the first magnetic core; a second sensor provided in a gap between the second magnetic core parts and configured to detect a magnetic flux; and a differential output part configured to output a differential output of a first output of the first sensor and a second output of the second sensor.