Giant magneto-impedance effect sensing probe based on flexible circuit board
A flexible circuit board and giant magneto-impedance technology, applied in the field of magnetic field detection, can solve the problems of low detection sensitivity, increased probe size, poor consistency, etc., to achieve the effects of improving sensitivity, reducing additional impedance, and reducing loop area
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[0013] The bottom and front circuit diagrams of the double-layer flexible circuit board used in a specific embodiment of the present invention are as follows: image 3 with Figure 4 Shown. The flexible circuit board has a thickness of 130 μm, a length of 12 mm, and a width of 6 mm. The disk marked with 0 is a via hole, which connects the upper and lower wires at one end. The discs marked 1 and 2 are the pads with two wires at the other end, and the double-strand wires are led out after welding with these two pads. The circular hole marked 3 is a string hole reserved for double-strand wires. The wires on the front circuit board are disconnected by the elongated pads 4 and 5, and the gap width between the two pads is 1 mm. On the bottom and front of the circuit board, there are two sections of marking lines perpendicular to the gap on both sides, and the marking lines are used to mark the magnetic field detection points. Co with a diameter of 20μm and a length of 8mm 68.15 Fe...
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