Skip to main content

How to Classify Inductors? What Are the Characteristic Parameters of Inductors?

 Inductance coil is one of the electronic components widely used in electrical products, instrumentation and equipment. It is an electronic component that uses the basic elements of the current magnetic effect of the total flow of electricity to carry out work.


Its electrical characteristics are opposite to capacitors. High-frequency data signals will encounter very large frictional resistance when passing through the inductance coil, and it is more difficult to pass smoothly. However, the frictional resistance generated when the low-frequency data signal passes is relatively small, that is, the low-frequency data signal can pass easily. Most of the resistors of the inductance coil to the DC adjustable regulated power supply are zero.


In electronic circuits, inductors are mainly used to carry out safety precautions and filtering for AC data signals or to form a coupling circuit with low-voltage capacitors and resistors. In the circuit design diagram, the inductance coil is indicated by the English alphabet L.


Classification methods of inductors


There are many methods to classify inductors:


According to the wire core classification, it can be divided into hollow core, magnetic core, copper core and iron core.


According to the installation method, it can be divided into a vertical and horizontal inductors.


According to the output power classification, it can be divided into high-frequency, intermediate-frequency and low-frequency inductors.


According to the application field, they are classified by switching power supply circuit filter coil, high frequency filter coil, high frequency choke coil, low frequency choke coil, line deviation and field deviation coil, line fluctuation and line linear calibration coil, local oscillation and High frequency undulating oscillating coil.


According to the adjustable state of inductance, it is classified into fixed and unchangeable inductors, changeable inductors, and inductors that can be slightly adjusted.


According to the winding method and structure of the coil, they are single-sided, multi-layer, with or without skeleton inductors, and variable inductors.


Classification methods of inductors


What are the characteristic parameters of inductors?


1. Inductance

In electromagnetism and electronics, inductance is the tendency of an electrical conductor to oppose a change in the electric current flowing through it. The unit of inductance is Henry, and the representative letter is H. The commonly used units are mH and μH.


2. Quality Factors

The quality factor (or Q) of an inductor is the ratio of its inductive reactance to its resistance at a given frequency, and is a measure of its efficiency. Q is the ratio of inductance XL and its equivalent resistance, that is, Q=XL/R. The higher the Q value of the coil, the smaller the loss of the loop.


3. Nominal Current

The nominal current of the inductor coil is the maximum amount of current allowed to pass when the inductor coil is operating under normal conditions. Rated current is the main parameter of high-frequency, low-frequency choke coils and high-power series resonant coils.


4. Distributed Capacitance

The capacitance between turns of the coil, between coil and shield, and between coil and plate is called distributed capacitance. The existence of distributed capacitance reduces the Q value of the coil and makes the stability worse, so the smaller the distributed capacitance of the coil, the better. The distributed capacitance can be reduced by segmental winding.

Comments

Post a Comment

Popular posts from this blog

Identify Different Types of Transformer Cores, Based on Materials

  Hi guys, this is JRPanel ! In previous  blog s, we have introduced several points about High Frequency Transformer, like  bobbins  and  Flat Spiral Coil . In this blog, JRPanel would like to introduce the commonly used magnetic cores in transformers ,  based on materials.   Generally speaking, the material of the core determines the environment in which the transformer is used. A transformer that uses a core of a different material will have its performance affected, may even be non-functional.   By material, magnetic cores are generally divided into the  several  categories . JRPanel will introduce them one by one to help you understand more fully.   1. Manganese Zinc Ferrite Core Mn-Zn core is a soft magnetic core with high initial permeability (2000~15000). The higher the initial permeability, the lower the surface resistance, so it is generally used in circuits below 1 MHz. Mn-Zn core has a high saturation flux density and causes lower losses, making it one of the most desirable
Post a Comment
Read more

The Relationship Between Plastic Nameplates and Membrane Switches

Before the 1970s, most nameplates   were made of metal materials. Today, plastic  nameplates   have been widely used in household appliances, instruments, meters, office equipment and other fields, and have become an indispensable part of electromechanical products. It not only plays the role of trademark identification, specification model, function indication, etc., but also becomes an element that reflects the appearance of the product.   With the continuous use of new materials and new processes, the surface of plastic  nameplates   is constantly improving, and it has become the crystallization of three major technologies: comprehensive surface treatment, processing and molding, and screen printing.   Plastic  nameplates   can be divided into 2 types according to their material processing methods and objects of use:   1. The injection-type plastic  nameplate   is made of ABS, PC and other engineering injection molding, and then undergoes secondary surface decoration processing such
Post a Comment
Read more

The Main Use and Classification Methods of Transformer Bobbins

  Hi guys, this blog is still about   high frequency transformers .   JRPanel   would like to introduce you the main use of transformer bobbins and how we classify them.   In the pictures are the transformer bobbins.        Following are the main uses of that JRPanel has summarized for you:   1. The bobbins provide space for winding copper wires in transformers.   2. Wire channel in the bobbins provides path for transformer winding.   3. The bobbins help to fix the core in the transformers.   4. The metal pins in the bobbins are connected to the  PCB  after soldering, which play an important role in conducting electricity when the transformer is working.   5. The baffle at the bottom of the bobbins isolates the core from the tin stack to avoid poor volta ge resistance.       From this it can be seen that the importance of bobbins in transformer is extraordinary.   After understanding the main uses of transformer bobbins,  JRPanel  is to introduce its common classification methods.   Fi
Post a Comment
Read more