Field-containing inductors

Abstract

Field-containing inductors are required in certain simulator applications e.g., elements of pulse shaping networks, terminators for transmission lines etc. Typical coils such as solenoids have a large magnetic dipole moment resulting in excessive interfering magnetic fields. An improved design based on the traditional toroidal coil windings is presented. This new design consisting of two windings is capable of higher voltage operation. Optimal shapes, energy and forces exerted are also discussed. The normalized plots of attainable inductance for varying geometrical parameters presented in this note should prove useful in future designs and applications.

Note: Investigation of a Marx generator imitating a Tesla transformer

“…The variable RLC fits used a modified version of (6) described above that includes an offset, Figs. 3, 4, and 7 using the form (21) with expansions (10) and (11). The offset y0 is excluded.…”

“…This coupling could be suppressed with different physical arrangements, or by using different winding patterns. 21 Alternatively, the load and stage inductors need not be separate components.…”

“…Variable RLC fit parameters for data in Figs.3, 4, and 7 using the form(21) with expansions(10) and(11). The offset y0 is excluded.…”

A toroidal power inductor using radial-anisotropy thin-film magnetic material based on a hybrid fabrication process

“…Magnetic components with high efficiency, high power density and low profile are needed for integration in power-supplyin-package and/or power-supply-on-chip [3]- [7]. Toroidal inductors have attractive geometries compared to solenoids and planar spirals, as they have little external field, which can cause electromagnetic interference and induce eddy-current loss in nearby conductors [8]- [11]. Magnetic-core inductors are attractive for multimegahertz (e.g.…”