## Concept of Self Inductance

Self Inductance or Inductance is defined as the property of a material due to which it opposes the flow of current through it. It is usually denoted by ‘L’ and its SI unit is Henry. How a material possess such property? To understand, let us...

## Equivalent Inductance of Parallel Connected Inductors

When the potential difference between the terminals of two or more inductors are same, it is said that they are connected in parallel. As potential difference or voltage across the terminals are same therefore current flowing through the inductors may or may not be same....

## Mutual Inductance – Perfect Coupling and Coupling Factor

Mutual Inductance Mutual inductance is defined as inductance of a circuit caused by mutual coupling with other circuit. Mutual coupling of two coils means that magnetic field produced by one coil is linking / crossing the other coil and vice versa. Mutual Inductance is generally...

## Concept of Magnetization or Saturation Curve: B-H Curve

Magnetization curve or saturation curve is basically the graphical relationship between the magnetic flux density B and magnetic filed intensity H for a given magnetic material. As we know that, B = μ0μrH where  μ0 = Permeability of free space = 4πx10-7Tm/A  μr = Relative...

## Why Current through an Inductor lags Behind Voltage?

For understanding the reason, why current through and Inductor lags behind Voltage across the Inductor, we will first go mathematically then we will understand the concept analytically. Let us consider a purely inductive circuit as shown in figure below. As shown in the figure above,...

## Working Principle of Transistor

In this post I will focus on the working principle of the Bipolar Junction Transistor assuming that you are already aware of the construction details of the BJT or simply Transistors. The basic operation of the transistor will be described using the pnp transistor. The...

## Analysis of Clamping Circuit

The clamping network is one that clamps a signal to a different DC level. The network contains a capacitor, a diode, and a resistive element, but it can also have an independent DC supply source to introduce an additional shift in voltage level. The magnitude...

## How to Find RMS Value of any Function?

I am writing this post for those who are going to appear for the GATE-2019. If you see the Previous Year Question Papers, you will find that finding RMS for a composite wave or for an arbitrary function is asked frequently. Therefore it is quite...