Square three-ring magnetic field coil

Abstract

The invention discloses a square three-ring magnetic field coil, which is characterized in that three coils are square coils with the same size, the three coils are arranged in parallel at intervals and connected in series, and the central axes of the three coils coincide; the distance between every two adjacent coils is equal and is equal to half of the side length of each coil; the number of turns of windings of the three coils is W1, W2 and W3 respectively, and the proportional relation of the number of turns meets the equation that W1 / W2=W3 / W2=1.81-1.83. The magnetic field uniformity is good.

Description

technical field [0001] The invention belongs to the field of electromagnetic fields, and in particular relates to a square three-ring magnetic field coil. Background technique [0002] In the weak magnetic field measurement test, the magnetic field coil is generally used to generate a standard magnetic field. The simplest and commonly used magnetic field coil is the Helmholtz coil, which has high magnetic field uniformity. In order to obtain better magnetic field uniformity, the method of combining multi-ring combined magnetic field coils is usually used. In various reference materials, many design methods of circular multi-ring combined magnetic field coils are given. However, in engineering practice, when the coil size is large, the processing difficulty of the circular coil increases, and the processing accuracy of the coil size cannot be accurately guaranteed. Contents of the invention [0003] In view of this, the present invention provides a square three-loop magn...

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Problems solved by technology

However, in engineering practice, when the coil size is large, the processing difficulty of the circular coil increases, and the processing accuracy of the coil size cannot be accurately guaranteed.

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