Toroidal inductors and transformers

Several small toroidal inductors. The major scale is in inches.A small toroidal transformer.

Fig. 1. Coordinate system. The Z axis is the nominal axis of symmetry. The X axis chosen arbitrarily to line up with the starting point of the winding. ρ is called the radial direction. θ is called the circumferential direction.

Fig. 2. An axially symmetric toroidal inductor with no circumferential current.

Toroidal inductors and transformers are passive electronic components, typically consisting of a circular ring-shaped magnetic core of high magnetic permeability material such as iron powder or ferrite, around which wire is coiled to make an inductor. Toroidal coils are used in a broad range of applications in AC electronic circuits, such as high-frequency coils and transformers.

单词	Toroidal transformer
释义	Toroidal transformer 英语百科 Toroidal inductors and transformers Toroidal inductors and transformers are passive electronic components, typically consisting of a circular ring-shaped magnetic core of high magnetic permeability material such as iron powder or ferrite, around which wire is coiled to make an inductor. Toroidal coils are used in a broad range of applications in AC electronic circuits, such as high-frequency coils and transformers.
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Toroidal transformer

Toroidal inductors and transformers