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A kind of closed-loop Hall effect sensor is designed and fabricated by considering several factors such as iron core material,Hall device,as well as selected integrated circuit.Through studying the effect of the iron material and structures of current sensor,a kind of optimal Hall effect current sensor is found.The experimental results show that the presented closed-loop Hall effect current sensor achieves 1 mA/A sensitivity.And its linearity and accuracy are 0.1%and 0.35%FS,respectively,at currents ranging from 0 to 50 A.
A kind of closed-loop Hall effect sensor is designed and fabricated by considering several factors such as iron core material, Hall device, as well as selected integrated circuit.Through studying the effect of the iron material and structures of current sensor, a kind of optimal Hall effect current sensor is found. The experimental results show that the closed-loop Hall effect current sensor achieves 1 mA / A sensitivity. And its linearity and accuracy are 0.1% and 0.35% FS, respectively, at currents ranging from 0 to 50 A.