Use two coils with exactly the same radius and number of turns, arrange them coaxially and make the distance equal to the radius, this kind of coil combination is called Helmholtz coil. It can generate a very weak magnetic field up to hundreds of Gs; the coil has a large uniform area, an open space for use, and easy operation. It can realize one-dimensional, two-dimensional, and three-dimensional combined magnetic fields, and can provide AC and DC magnetic fields. The current has a good linear relationship with the magnetic field. It is suitable for various research institutes, universities and enterprises to do material magnetism or testing experiments, applied to materials, electronics, biology, medical treatment, aerospace, chemistry, applied physics and other disciplines. Its main purpose: to generate standard magnetic fields; Cancellation and compensation, geomagnetic environment simulation, determination of magnetic shielding effect, electromagnetic interference simulation experiment, calibration of Hall probes and various magnetometers, research on biological magnetic field, and research on magnetic properties of materials.
Hunan Forever Elegance Technology Co.,Ltd. is in the forefront of the international counterparts in the field of Helmholtz coil magnetic field generation. At present, we have successively developed and designed: circular, square, and octagonal Helmholtz coils. At the same time, with the help of finite element design tools, a compensated octagonal Helmholtz coil has been developed to increase the uniformity area of the coil by eight times.
● Cancellation and compensation of the earth's magnetic field
|Helmholtz coil use classification|
|● Use with a flux meter to measure the magnetic flux of the material;
● With the permanent magnet quality measuring instrument or magnetic declination measuring instrument developed by Hunan Yongyi Technology Co., Ltd., it can further judge the material quality and screen incoming materials;
● Water-cooled Helmholtz coils can be made according to requirements: the magnetic field value can be on the order of thousands of Gauss, to meet customer needs;
● One-dimensional, two-dimensional, and three-dimensional square Helmholtz coils can be customized, which are generally used to generate a magnetic field with a relatively large volume and a relatively high uniformity in the designated uniform area, and the magnetic field value is in the order of several Gs to tens of Gs.
One-dimensional Helmholtz coil technical parameter reference table
|Coil model||Coil constant (K)||The uniformity of the coil corresponds to the uniform area of the coil (mm)||Coil resistance(Ω)||A(mm)||B(mm)||C(mm)||D(mm)||E(mm)||F(mm)|
|Non-standard||Can be designed and manufactured according to customer requirements (water-cooled coils can be made)|
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