The Square Helmholtz Coil is used to simulate a zero magnetic field or a magnetic field of any size and direction within the range. Its magnetic field uniformity area is related to the size of the coil structure. In order to obtain the relationship between the magnetic field uniformity area and the structure size, a square Helmholtz coil is constructed The mathematical model of, the vector expression of the magnetic induction intensity at any point inside the coil is derived, and the corresponding relationship between the output current and the size of the generated magnetic field is obtained. The steady magnetic field is dynamically simulated by the programmable constant current source and the magnetometer tracking compensation. The uniformity area of ​​the magnetic field generated by the system was measured, and the analysis showed that the theoretical calculation and the experimental results are in good agreement.

Square Helmholtz Coil features: The uniform area is large in volume and the space is open. It is generally used for testing larger samples. The side length can reach 1 meter to several meters. It can be designed as one-dimensional, two-dimensional, and three-dimensional coils. Square Helmholtz Coil is suitable for generating standard magnetic fields, cancellation and compensation of the earth's magnetic field, geomagnetic environment simulation, determination of magnetic shielding effect, electromagnetic interference simulation experiment, calibration of Hall probes and various magnetometers, research of biological magnetic fields and materials The study of magnetic properties.
The above are the characteristics of Square Helmholtz Coil, I hope to help you.