Circuit employing double manganese bronze design external magnetic field interference resistance

A circuit employing double manganese bronze design external magnetic field interference resistance is disclosed. A double manganese bronze interference resistance circuit comprises two manganese bronze pieces with same shape and structure and same impedance and an insulated isolation piece. The two manganese bronze pieces are divided into a first manganese bronze piece and a second manganese bronze piece. The first manganese bronze piece is laminated at a lower side of the second manganese bronze piece. The insulated isolation piece is clamped by the first manganese bronze piece and the second manganese bronze piece. One side of the first manganese bronze piece is provided with a first sampling line and a second sampling line. One side of the second manganese bronze piece is provided with a third sampling line and a fourth sampling line. The first sampling line is connected with the fourth sampling line, and the second sampling line is connected with the third sampling line. The circuit has the advantages that a reverse signal generated by a space magnetic field on an extra second manganese bronze piece is used to counteract an interference signal generated the space magnetic field on the first manganese bronze piece, and the counteraction of magnetic field interference is realized.