CURRENT SENSOR FOR DETECTING LEAKAGE CURRENT

The invention relates to a current sensor for detecting leakage current. A current sensor for detecting leakage current from an electric vehicle charger. The current sensor includes a magnetic core having a gap formed therein, a first conductor wound around the magnetic core to form a first coil, a second conductor wound around the magnetic core to form a second coil, and a tunneling magnetoresistance (TMR) sensor element disposed in the gap of the magnetic core. The difference between the current in the first conductor and the current in the second conductor produces a magnetic field in the gap of the magnetic core proportional to the leakage current, and the magnetic field produces a voltage in the TMR sensor element indicative of the leakage current value. 本申请涉及用于检测泄漏电流的电流传感器。一种用于检测来自电动交通工具充电器的泄漏电流的电流传感器。电流传感器包括在其中形成有间隙的磁芯、缠绕在磁芯周围以形成第一线圈的第一导体、缠绕在磁芯周围以形成第二线圈的第二导体以及布置在磁芯的间隙中的隧道磁阻(TMR)传感器元件。在第一导体中的电流和在第二导体中的电流之间的差异在磁芯的间隙中产生与泄漏电流成比例的磁场，并且该磁场在TMR传感器元件中产生指示泄漏电流值的电压。