Basic knowledge of Inductor
Here present the article about the basic knowledge of inductor
The basic form of ,an Inductor is nothing more than the coil of wire is wound around a central core.for the most coils a current (i) flow through the coil produces a magnetic flux,(N)around it that is proportional to the flow of electrical current. An Inductor,also called a choke,is another passive type of electrical component that is simply coil of wire that is designed to take advantage of this relationship by inducing a magnetic field in itself or in the core as result of the current passing through the coil.This results is more high the stronger magnetic field than one that would be produced by a simple coil of wire.
Inductor are formed with wire tightly wrapped around a solid central core which can either a straight cylindrical rod or a continuous loop or ring to concentrate their magnetic flux.
- Inductor' is the passive electrical component used in electronic circuits that conserves the electrical energy from the current flowing through it as a magnetic field. '
What is inductor
In reality, a inductor is a wire. Which can be of any conductive material like: copper, aluminum, iron etc. When malformed material is placed around this wire. (This is called insulation.) And if it is wrapped round with no base or base, then this type of parts is called inductor. The insulation is applied so that the wire does not shorten when it is wrapped. The current is received from the end of the wire only from the other end and not in the middle.
Working concept of inductor
The electrical current flows through an wire conductor, the magnetic flux is developed around an conductor producing a relationship between the direction of this magnetic flux which is circulating around the conductor and the direction of the current flowing through the same conductor.This well known relationship between current and magnetic flux direction is called "Fleming's Left Hand But the Rule”. But the other important property relating to the wound coil that also exists, that an secondary voltage is induced into the same coil by the movement of the magnetic flux as it is opposes or resists any changes in the electrical current flowing it.
The basic form of ,an Inductor is nothing more than the coil of wire is wound around a central core.for the most coils a current (i) flow through the coil produces a magnetic flux,(N)around it that is proportional to the flow of electrical current. An Inductor,also called a choke,is another passive type of electrical component that is simply coil of wire that is designed to take advantage of this relationship by inducing a magnetic field in itself or in the core as result of the current passing through the coil.This results is more high the stronger magnetic field than one that would be produced by a simple coil of wire.
Inductor are formed with wire tightly wrapped around a solid central core which can either a straight cylindrical rod or a continuous loop or ring to concentrate their magnetic flux.
The symbol for a inductor is that of a coil of wire so therefore, the coil of wire can also be called as Inductor. Inductors are usually classified according to the type of inner core around which they are wound, for example, with different core types with hollow core (free air), solid iron core or soft ferrite core. Separated by adding continuous or dotted parallel lines. The Wire coil as shown below.
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| Inductor symbols |
The current(i) flows through the inductor produces a magnetic flux that is proportional to it.But unlike an Capacitor which oppose a change of voltage across their plates,a inductor opposes the rate of change of current flowing through it due to the creation of self-induced energy within its magnetic field.
In other words, the inductors oppose the changes of current but will easily pass a steady state DC current.This ability of a inductor to resist changes in current and which also relates current(i) with its magnetic flux linkage, NΦ as a constant of proportionality is called Inductance which is given the symbol L with units of Henry,(H) after Sir Joseph Henry.
The according to Faraday's Law,any change in this magnetic flux linkage produces a self-induced voltage in the single coil of:
where:
N is the number of turns
A is the cross-sectional Area in m2
Φ is amount of flux in Webers
μ Is the Permeability of the core material
L the Length of the coil in meters-
di/dt is the Currents rate of change in amps/second
A time separating magnetic field induces a voltage that is proportional to the rate of change of current output and indicates an increase in EMF with a positive value and a decrease in EMF from a negative value. The equation, current and inductance related to this self-induced voltage can be found by replacing μN2A / 1 with L called the constant representation of proportionality called the inductance of the coil.
This relation between the flux in the inductor and the current flowing through the inductor is given as:Φ =Li.As a inductor consists of a
coil of conducting wire, then reduces the above equation to give the self-induced emf,sometimes called the back emf induced in the coil too:
Where:
L is self-inductance and di/dt the rate of current change.
Use of inductor
- For making electrical filters
- For impedance matching
- To generate thousands of volts in the beginning for burning tubelight etc. and Two limit the current flowing through it after burning.
- create spark in old cars and scooters etc. (ignition coil)
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Very helpful and useful information you shared about inductor. keep posting such blogs.
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Well written blog. very valuable information you shared. keep sharing.
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