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Open Loop Current Sensor
- Sep 19, 2018 -

As there is a magnetic field in the solenoid, its size is directly proportional to the current in the wire. Therefore, hall sensor can be used to measure the magnetic field, so as to determine the current in the wire. This principle can be used to design hall current sensor. Its advantage is that it does not have electric contact with the circuit under test, does not affect the circuit under test, and does not consume the power of the power source under test.

Hall current sensor work principle, the standard ring iron core has a notch, the hall sensor is inserted into the gap, there is a coil on the ring, when the current through the coil produces magnetic field, hall sensor has signal output.