The composition of inductors
Release time:
2025-05-07
There are various types of multi-layer windings, such as layered flat winding, random winding, and honeycomb winding.
Inductors are generally composed of a skeleton, winding, shielding cover, packaging material, magnetic core or iron core, etc.
1. Skeleton refers to a bracket used for winding coils. Some large fixed or adjustable inductors (such as oscillating coils, blocking coils, etc.) are mostly wrapped with enameled wire (or yarn wrapped wire) around the skeleton, and then the magnetic core or copper core, iron core, etc. are inserted into the inner cavity of the skeleton to increase their inductance. The skeleton is usually made of plastic, laminated wood, or ceramic, and can be made into different shapes according to actual needs. Small inductors (such as color coded inductors) generally do not use a skeleton, but directly wrap the enameled wire around the magnetic core. Hollow inductors (also known as derived coils or hollow coils, commonly used in high-frequency circuits) do not require magnetic cores, skeletons, or shielding covers. Instead, they are first wound on a mold and then removed from the mold, with a certain distance between the coils.
2. A winding refers to a set of coils with a specified function, which is the basic component of an inductor. There are single-layer and multi-layer windings. There are two forms of single-layer winding: dense winding (when the wire is wound one by one) and intermittent winding (when the wire is wound at a certain distance between each turn); There are various types of multi-layer windings, such as layered flat winding, random winding, and honeycomb winding.
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