Design of Small Hall Current Sensor of Intelligent Module with Thyristor

The sensor, whose veracity and reliability determine the success of the system, plays an important role of collecting information. In this paper ,a small Hall current sensor made from a GaAs Hall component is introduced. Firstly, the principle of magnetic route is analyzed and magnetic core according with high current small volume is designed. Secondly, the paper introduces the operation principle of the Hall current sensor, designs the magnifying and rectifying circuit and describes es all parts of the circuit in detail, especially, the circuit for compensating temperature drifting. Finally, some experimental results are shown. The sensor posesses the advantages of very simple construction, small volume, high sensitivity, high linearity, low power losses.