b-dot probe and current spatial distribution measurement system based on pcb magnetic induction coil
A magnetic induction coil and current probe technology, which is applied in the direction of measuring devices, current only, and electrical variables, can solve the problems of large differences in B-dot sensitivity, difficulty in ensuring the consistency of B-dot magnetic induction coils, and inconvenient data analysis. , to achieve the effects of suppressing strong electromagnetic and high-energy electronic interference, good electrical connection, and simple structural design
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[0045] The present invention proposes a B-dot current probe that uses a small-size printed circuit board (PCB) as a magnetic induction coil. The core idea is that the magnetic induction coil of the B-dot probe adopts a double-layer PCB with upper and lower two layers of wiring, and the side is plated. tin. The wiring of the top layer of the coil starts from the center of the top layer of the PCB, and the wiring on the bottom layer of the coil ends in the tin-plated area on the PCB surface. The male TNC connector snaps into the notch of the PCB coil to lead out the measurement signal. The metal support ring 3 with rectangular grooves and the metal shielding cover 2 press the PCB type magnetic induction coil 1 from the upper and lower sides to ensure good electrical contact. A slit 7 is opened at the top of the metal shielding cover 2, and the direction of the slit coincides with the normal direction of the PCB coil to allow the magnetic field to enter the PCB coil. The cable c...
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