High accuracy, closed -loop type magnetic resistance current sensor

The utility model relates to a high accuracy, closed -loop type magnetic resistance current sensor. The utility model discloses an electromagnetic conversion module, signal conditioning module, feedback compensation module and power module. Electromagnetic conversion module gets into the feedback compensation module and forms feedback current to signal conditioning module output voltage, voltage signal after signal conditioning module amplifies, produce feedback magnetic field, after the system reaches the zero flux state, can record indirectly by the survey current signal through recording the feedback current signal. Power module provides the power for whole magnetic resistance current sensor. The utility model discloses thereby not only can offset effectual eliminating interference magnetic field mutually through the two sets of even field that produces around the magnetic core air gap, make measuring result more accurate, still enable magnetism resistance chip and settling the in -process more convenient,