For the patch inductors, it is known that its application is relatively wide, the English name is Chip inductors, also known as power inductors, high current inductors and surface mounted high power inductors.
The patch inductor is a nonlinear electronic component, which requires that the current through the inductor cannot change, so it will carry out a high resistance state for the current that changes.
First, we need to understand that inductance is a property of a closed loop, that is, when the current through the closed-loop changes, the electromotive force will appear to resist the current change.
The standard method of the color ring inductance is the same as the color ring resistance, and the volume size can distinguish the size of the current that can pass through.
Inductor is a commonly used component in switching power supply, because its current, voltage phase is different, so theoretically the loss is zero.
Inductor is a passive component, and only works when current passes through it. Its function is to convert ac to dc, and then filter out part of the noise wave, so that the smooth wave can pass through.
Components of inductance: generally, it is composed of magnetic core or iron core, skeleton, winding group, shielding cover, packaging material, etc.
Common mode inductors (Choke), also known as Common mode Choke, are used to filter Common mode EMI signals in switching power supplies of computers.
Color ring inductors, similar to common color ring resistors, usually use three or four color rings to mark the inductance quantity.
Magnetic beads are specially designed to suppress high-frequency noise and spike interference on signal lines and power lines, and also have the ability to absorb electrostatic pulses. Magnetic beads are used to absorb UHF signals.
Inductance may be made by winding a core of conductive material, typically copper wire, or the core may be removed or replaced with a ferromagnetic material. Core materials with higher permeability than air can bind the magnetic field more tightly around the inductance element, thus increasing the inductance.
The Inductor is a device that stores electrical energy as magnetic energy. The structure of an inductor is similar to that of a transformer, but with only one winding. An inductor has a certain inductance that only resists changes in current.