Three-axis Helmholtz coil manufacturers tell you the types of magnetic field generators that are commonly used at present. Generally, there are fixed magnetic field, Helmholtz coil, helical coil, and electromagnet and other magnetic field generators. Fixed magnetic field, the standard magnetic field is composed of multiple permanent magnets, through the magnetic field loop, to achieve a constant magnetic field in the gap, the magnetic field size is generally 100 gauss and 1000 gauss, which can be used for Gauss meter calibration, etc.
The Helmholtz coil is composed of two flat coaxial single coils. A spherical uniform magnetic field is generated in the middle of the two coils. The size of the uniform magnetic field is changed by changing the current size. It has adjustable magnetic field, high uniformity, high sensitivity, The uniform area is large and other characteristics, the magnetic field is generally below 1000GS, the two-way magnetic field, according to the direction of the magnetic field, the Three-axis Helmholtz coil manufacturer tells you that the size of the magnetic field can design one-dimensional Helmholtz coil, one-dimensional compensation Helmholtz coil and three-dimensional Helmholtz coil Mholtz coils, etc., can generate DC magnetic fields and AC magnetic fields.
Three-axis Helmholtz coil manufacturers tell you that the magnetic field of the solenoid coil is composed of a single helical coil, which generates a long cylindrical uniform magnetic field in the coil. The size of the magnetic field in the uniform area is changed by changing the current size, but the uniformity is the same as that of the Helmholtz coil. Compared with the slightly worse electromagnet, it is composed of two flat coaxial single coils. The magnetic field in each coil is derived from pure iron, and a uniform magnetic field is generated in the gap between the two pure irons. The magnetic field is changed by changing the current size. Three-axis Helmholtz The coil manufacturer tells you that it has the characteristics of adjustable magnetic field, large uniform area and strong magnetic field, and the highest magnetic field is up to 10T. In summary, we choose the appropriate type of magnetic field generation according to the type of magnetic field, the size of the magnetic field, the size of the uniform area, and the uniformity.