Inductors are generally composed of skeleton, winding, shield, encapsulation material, magnetic core or iron core.
Date:
2022-10-13 11:16
1. Skeleton skeleton generally refers to the bracket of winding coil. Some large volume of fixed inductors or adjustable inductors (such as oscillation coil, resistance coil, etc.), most of the enamelled wire (or gauze wire) around the skeleton, and then the core or copper core, iron core, etc., into the inner cavity of the skeleton, in order to improve the inductance. The skeleton is usually made of plastic, bakelite, ceramic, according to the actual needs can be made into different shapes. Small inducTORS, such AS COLOR CODE inductors, typically DO not use a skeleton, but wrap ENAMeled wires directly around the core. Hollow inductors (also known as extruder coils or hollow coils, mostly used in high-frequency circuits) do not use cores, skeletons and shielding covers, etc. Instead, they are wound on the mold and then removed, and the coils are separated from each other by a certain distance.
2. Winding Winding refers to a set of coils with specified functions, which is the basic component of an inductor. Windings can be divided into single layer and multiple layer. The single-layer winding has two forms: close winding (winding wire a circle to a circle) and between winding (winding wire each circle are separated by a certain distance); Multilayer winding has layering winding, disorderly winding, honeycomb winding method and so on.
3, the core and magnetic rod The core and magnetic rod are generally made of nickel-zinc ferrite (NX series) or manganese zinc ferrite (MX series) and other materials, it has "Gong" shape, column shape, cap shape, "E" shape, tank shape and other shapes.
4, the core core materials are mainly silicon steel sheet, permalloy, etc., its shape is mostly "E" type.
5, shielding cover in order to avoid some inductors in the work of the magnetic field to affect the normal work of other circuits and components, it is added to the metal screen cover (such as the oscillator coil of semiconductor radio, etc.). The inductor with a shield will increase the loss of the coil and reduce the Q value.
6. Packaging materials Some inductors (such as color code inductors, color ring inductors, etc.) are wound, and the coil and core are sealed with packaging materials. Encapsulation materials are plastic or epoxy resin.
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