Technical Information for DC Current Sensor

2016-06-16 09:54:59 MEWOI Electronics Co.,Ltd


MEWOI DC Current Sensor is constituted of the combination of the cut core and hole element as a magnetic sensor and it is possible to measure not only DC current but also AC current continuously.

[Measuring Principle of Hall Element Sensor]


[Measuring Principle of Hall Element Sensor]







The magnetic flux in proportion to the current flow(I1) to the conductor is converged in the core and cross over the Hall element located in the gap of core.Then, the Hall voltage(VH) will be generated by the effect of Hall element in proportion to the current flow(I1).This Hall voltage(VH) is used to measure AC/DC current.However,the measurement of small DC current is influenced by the magnetization of core,terrestrial magnetism and variation of temperature.We employed new excitation sensing method and enabled the precise measurement of small DC current without influence of the magnetization of core,terrestrial magnetism and variation of temperature