一种螺绕环自感系数的近似计算

针对现行经典电磁场理论中的计算和讨论均不够详尽，采用计算与图示相结合的方法，提出了忽略环管截面内沿垂直环管轴线半径方向上的磁场变化时的单层密绕螺绕环自感系数的近似计算方法。给出了环管轴线半径远远大于和等于环管截面半径时的计算结果。近似计算出多层密绕螺绕环的自感系数，并对结果进行了讨论。

Approximate calculation of coefficient toroids self-inductance

In view of unclear calculation and discussion in the classical electromagnetic field theory now, the paper adopts the method corresponding the calculation to the figures and gives a method of approximate calculation for the coefficient of the self-inductance of the toroid neglecting the magnetic field variation along the direction perpendicular to the concentric circle radius in the ring pipe section. It also gives the results of the following two situations, when the concentric circle radius is far larger than and is equal to the ring pipe section radius, and the coefficient of the self-inductance of the multi-layer toroid is approximately calculated.