File Name: types of inductors and their symbols .zip
There are only three basic components in any electronic circuit design- resistor, capacitor, and inductor.
Different Types of Inductors. An inductor is a passive electrical device typically a conducting coil that introduces inductance into a electric circuit.
There are only three basic components in any electronic circuit design- resistor, capacitor, and inductor. We have already covered the introduction to a resistor and its different types , and also covered capacitors and its different configurations. In this tutorial, we are going to know about different types of inductors and how to choose an inductor for different applications. Inductors are often referred to as "AC resistance".
The main characteristic of an inductor is its ability to resist changes in current and store energy in the form of a magnetic field. The standard unit of inductance is the henry. Depending on the application there are many types of inductors, they come in various form factors, there are high-frequency inductors, low-frequency power line inductors, and some specially designed inductors for decoupling and filter applications, below we will discuss different types of inductors in details.
The elements of a laminated core inductor consist of a bobbin, a laminated core, and a coil which is wrapped around the bobbin. To make a laminated core inductor, a wire is wrapped around the bobbin of the inductor, then the E and I plates are placed inside the bobbin one by one to form the core, this E and I sheets are made out of steel with high silicon content and its heat-treated to produce high permeability and to lower the hysteresis and eddy current losses.
Example Features. Example Part No. By taking a cylindrical material of specific diameter like a drill bit as a template, we can wrap around a length of wire to make an air-core inductor, further the inductance can be stabilized by dipping the inductor in varnish or securing it by wax. The core material is air, so it has low permeability hence lower inductance so, it can be used for high-frequency applications. By winding a length of wire around a ferrite core will result in a ferrite core inductor.
So, what is a Ferrite core and when should we use it? Ferrite core inductors have high permeability, high electrical resistivity and low eddy current losses these characteristics make them suitable for many high-frequency applications. Winding a length of wire in a specially made cylindrical bobbin and securing it with a shrink tube forms a bobbin inductor. The core material is ferrite so, the properties are also similar to a ferrite core inductor.
The small size makes them suitable for power adapter like applications. A length of wire is wrapped around a donut-shaped core is commonly known as a toroid core inductor. The core material is ferrite so, the material properties resemble a ferrite core inductor. This type of core can contain a magnetic field very well because of its closed-loop nature, thus improving the size and inductance.
Due to the high magnetic field and high inductance value with fewer windings, the impedance is very less which helps to improve the efficiency of the inductor. To make this type of inductor a very thin copper wire is wrapped around a dumbbell-shaped ferrite core, and two lids are connected at the top and the bottom of the dumbbell core. After that it goes through a molding process the green material surrounding the inductor where the values are printed as colored bands, therefore we can determine the value of the inductor just by reading the color bands and comparing them with the color code chart just like a resistor.
It is built by winding a length of wire in a cylindrical bobbin and securing it in a specially made ferrite housing forms, shielded surface mount inductor. These inductors are specially designed for PCB mounted applications and the shielding is there to reduce EMI and noise from the inductor and also to be able to use in a high-density design.
Coiling up a multi-stranded wire then putting it in a ferrite will result in a wireless charging coil. A length of multi-stranded wire is used to reduce the skin effect, which describes a high-frequency magnetic field that can penetrate a certain depth, means if a solid wire is used in this case the most of the current will flow through the outer part of the conductor which therefore increase the resistance.
By placing a ferrite plate under a coil it can improve the inductance and can also focus the magnetic field and reduces emissions. Winding two wires in a common core form a coupled inductor. The windings can be connected in series, parallel or as a transformer, as per application requirements, they work by transferring energy from one winding to another by mutual inductance, the most common coupled inductors have one-to-one turns ratio used in manly DC-DC converters.
The name itself indicates that it consists of multilayers. It is built by using thin plates made out of ferrite. The coil pattern is printed on it, with special metallic paste recipe confidential to manufacturer , proper placement of these sheets a layer after another forms a coil hence inductance.
By wrapping a length of wire around a hollow cylinder bobbin, and by placing and moving the core made out of ferromagnetic material or brass we can change the value of the inductor. If the core material is ferrite, then moving the core material in the centre of the winding will increase the inductance. If the core material is brass, then moving it to the center of the winding will decrease the inductance.
The STM32Cube with graphical software configuration tool reduces development efforts, time, and cost. Different Types of Inductors and Their Applications. Different Types of Inductors. Click to Enlarge. What is an Inductor? Types of Inductors Depending on the application there are many types of inductors, they come in various form factors, there are high-frequency inductors, low-frequency power line inductors, and some specially designed inductors for decoupling and filter applications, below we will discuss different types of inductors in details.
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Types of Inductors and Applications
There are different types of inductors used in the industry. Therefore It is important to know about the specific type of inductor before buying it. We have already shared a detailed post about inductors? Below, we will discuss different types inductors based on different factors and their applications. The core of the inductor plays an important role in its characteristics.
Basic Electronics - Types of Inductors
Different types of inductors are available based on sizes and ratings. Their physical sizes vary from tiny sizes to the huge transformer, depending on the power being handled and the frequency of AC being used. As one of the basic components used in electronics , inductors are extensively used in much wider application areas like signal controlling, noise elimination, voltage stabilization, power electronic equipments, automobile operations etc. A diverse electronic component used in a wide range of applications requires various types of inductors.
An inductor is a passive two-terminal electrical component that stores in a magnetic field when current flows through it. It is also called a choke, coil or reactor. There are two main classifications of inductors, air core and iron core.
There are different types of inductors. Depending on their material type they are basically categorized as follows. Ceramic is the most commonly used material for inductor cores. Since ceramic has no magnetic properties, there is no increase in the permeability value due to the core material.
Inductors are available in different shapes and has different uses. Their sizes vary depending upon the material used to manufacture them. The main classification is done as fixed and variable inductors. An inductor of few Henries may be in a dumbbell shape at the size of a simple resistor.
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