I-shape inductor manufacturer

Function and structure of I-shaped inductance

The I-shaped inductance coil is generally composed of a magnetic core or iron core, a skeleton, a winding group, a shielding cover, and packaging materials.
I-shaped inductors are also called: choke coils, differential mode inductors. It is a coil used to limit the passage of alternating current, and it is divided into a high-frequency choke coil and a low-frequency choke coil. Adopting open magnetic circuit structure design, it has the characteristics of good structure, small size, high Q value, and low cost. Suitable for computers, inkjet printers, copiers, display monitors, mobile phones, broadband modems, game consoles, color TVs, VCRs, cameras, microwave ovens, lighting equipment, automotive electronics, etc.

Structural composition of I-shaped inductance
1. The skeleton of the I-shaped inductor is supported by the winding support of the copper core coil. I-shaped inductance is one of the properties of electronic circuits or devices, referring to: When the current changes, some large fixed inductors or adjustable inductors (such as oscillating coils, choke coils, etc.) are generated due to electromagnetic induction to resist current changes. The commonly used I-shaped inductors are regarded as the vertical type of axial inductors. The application convenience is similar to the axial inductor, but the common I-shaped inductor can have a larger volume inductor type, and the current can naturally be improved to a certain extent. Most of them wind the enameled wire (or yarn-covered wire) directly on the skeleton, and then put the magnetic core or copper core, iron core, etc. into the inner cavity of the skeleton to increase its inductance. The skeleton is usually made of plastic, bakelite, and ceramics, and can be made into different shapes according to actual needs. Small inductance coils (such as I-shaped inductors) generally do not use a skeleton, but directly wind the enameled wire on the magnetic core.

Air Core Inductor Coil
1. (Also known as bodiless coil or air-core coil, mostly used in high-frequency circuits) without magnetic core, skeleton and shielding cover, etc. Instead, it is wound on the mold first, and then the mold is taken off, and a certain distance is drawn between each coil of the coil.
2. Winding refers to a group of coils with specified functions, which is the basic component of I-shaped inductors. There are single-layer and multi-layer windings. There are two forms of single-layer winding: dense winding (the wires are next to each other when winding) and inter-winding (there is a certain distance between each ring of wires when winding); There are many kinds of multilayer windings, such as layered flat winding, random winding, and honeycomb winding.
3. The magnetic core and magnetic bar are generally made of nickel-zinc ferrite (NX series) or manganese-zinc ferrite (MX series). It has various shapes such as "I" shape, column shape, hat shape, "E" shape, pot shape, and ring shape.
4. The core materials mainly include silicon steel sheet, permalloy, etc., and its shape is mostly "E".
5. In order to prevent the magnetic field generated by some inductance coils from affecting the normal operation of other circuits and components, a metal screen cover (such as the oscillating coil of a semiconductor radio, etc.) is added to the shielding cover. Using shielded inductors will increase the loss of the coil and reduce the Q value.