Magnetic sensor and current detection device

A magnetic sensor comprising:

• a first resistor arm having:
• a plurality of first magneto resistive elements which are arrayed on one surface;
• a first electrode piece which connects respective upper surfaces of two first magneto resistive elements that are adjacent to each other and that are of the plurality of first magneto resistive elements;
• and a second electrode piece which connects respective lower surfaces of two first magneto resistive elements that are adjacent to each other and that are of the plurality of first magneto resistive elements, wherein the plurality of first magneto resistive elements are alternately connected in array sequence by the first electrode piece and the second electrode piece;
• a second resistor arm having:
• a plurality of second magneto resistive elements which are arrayed on the one surface;
• a third electrode piece which connects respective upper surfaces of two second magneto resistive elements that are adjacent to each other and that are of the plurality of second magneto resistive elements;
• and a fourth electrode piece which connects respective lower surfaces of two second magneto resistive elements that are adjacent to each other and that are of the plurality of second magneto resistive elements, wherein the plurality of second magneto resistive elements are alternately connected in array sequence by the third electrode piece and the fourth electrode piece;
• a third resistor arm having:
• a plurality of third magneto resistive elements which are arrayed on the one surface;
• a fifth electrode piece which connects respective upper surfaces of two third magneto resistive elements that are adjacent to each other and that are of the plurality of third magneto resistive elements;
• and a sixth electrode piece which connects respective lower surfaces of two third magneto resistive elements that are adjacent to each other and that are of the plurality of third magneto resistive elements, wherein the plurality of third magneto resistive elements are alternately connected in array sequence by the fifth electrode piece and the sixth electrode piece;
• and
• a fourth resistor arm having:
• a plurality of fourth magneto resistive elements which are arrayed on the one surface;
• a seventh electrode piece which connects respective upper surfaces of two fourth magneto resistive elements that are adjacent to each other and that are of the plurality of fourth magneto resistive elements;
• and an eighth electrode piece which connects respective lower surfaces of two fourth magneto resistive elements that are adjacent to each other and that are of the plurality of fourth magneto resistive elements, wherein the plurality of fourth magneto resistive elements are alternately connected in array sequence by the seventh electrode piece and the eighth electrode piece, wherein
• the magnetic sensor includes an intersecting part in which the first electrode piece is arranged to be vertically spaced apart from and intersect with the eighth electrode piece, the second electrode piece is arranged to be vertically spaced apart from and intersect with the third electrode piece, the fifth electrode piece is arranged to be vertically spaced apart from and intersect with the fourth electrode piece, and the sixth electrode piece is arranged to be vertically spaced apart from and intersect with the seventh electrode piece.