What Are The Main Parameters Of Inductors

Inductor main parameters are inductance, allowable error, inductive XL, quality factor Q, nominal current, etc., where the inductor coil on the AC current obstruction size called inductive XL, the unit is ohms. It is related to the inductance L and the AC frequency f by XL=2πfL. The function of inductor in the circuit is filtering, oscillation, delay, trap, filter noise, stabilize current and inhibit electromagnetic wave interference, etc. What are the main parameters of the specific inductor and what role the inductor plays in the circuit, and I in the text to understand it!
What are the main parameters of inductors
1. Inductance:
The amount of inductance marked on the inductor indicates the inherent characteristics of the coil itself, reflecting the ability of the inductor to store magnetic field energy, and also reflecting the ability of the inductor to generate induced electromotive force when changing the current, in hen (H). Its size is related to the number of turns of the coil, the winding method and the core material, and has nothing to do with the current. The more the number of turns, the more concentrated the coil wound, the greater the electrical sensitivity; The inductance of a coil with a magnetic core is larger than that without a magnetic core. The inductance of the magnetic core with large permeability is large.
2. Allowable error:
The maximum allowable deviation range of the actual inductance of the inductor relative to the nominal value is called the allowable error.
3. Inductive XL:
The size of the inductor coil on the AC current obstruction is called the inductive reactance XL, the unit is ohms. It is related to the inductance L and the AC frequency f by XL=2πfL.
4. Quality factor Q:
It is a physical quantity that measures the quality of the coil and is represented by the letter "Q". The higher the Q value, the smaller the power consumption of the inductor, the higher the efficiency, and the better the "quality". The Q value is related to the structure of the coil (wire thickness, multiple or single strand, winding, core). The ratio of inductive XL to its equivalent resistance, that is: Q=XL/R, the higher the Q value of the coil, the smaller the loss of the loop, the Q value of the coil is related to the DC resistance of the wire, the medium loss of the skeleton, the loss caused by the shield or the iron core, the influence of the high-frequency skin effect and other factors, the Q value of the coil is usually dozens to one hundred.
5, nominal current:
Refers to the size of the coil allowed through the current, often represented by the letters A, B, C, D, E, nominal current of 50, 150, 300, 700, 1600 mA. Large volume electrical sensation, nominal current and inductance are indicated on the housing.
What role does the inductor play in the circuit
Inductors have the property of preventing the passage of alternating current and allowing direct current to pass smoothly, and the higher the frequency, the greater the coil impedance. Therefore, the main function of the inductor is to isolate and filter the AC signal or to form a resonant circuit with capacitors and resistors.
Inductors in the circuit mainly play the role of filtering, oscillation, delay, trap, and so on, but also screen signals, filter noise, stabilize the current and inhibit electromagnetic wave interference. The most common function of inductors in circuits is to form LC filter circuits together with capacitors. The capacitor has the characteristic of "blocking DC, blocking AC", while the inductor has the function of "blocking DC, blocking AC".