A transformer is a static electrical machine that is used to increase or decrease the voltage and current in an AC (Alternating Current) system. Based on construction, the transformers are broadly classified into following two types Core Type Transformer Shell Type Transformer In this tutorial, we will highlight all the major differences between a core type transformer and a shell type transformer. But before discussing the differences, let's understand the basics of core type and shell type transformer, so that it becomes easier to understand the differences between them. What is a Core Type Transformer? In the ... Read More

There are two most popular MOS (Metal Oxide Semiconductor) technologies namely CMOS and NMOS which are widely used in the field electronics and power electronics such as in ASICs, memories, processors, etc. Nowadays, the CMOS technology is one of the leading semiconductor technology. It is because the CMOS technology dissipates less power when compared to the bipolar and NOMOS technology. In this tutorial, we will discuss the major differences between CMOS technology and NMOS technology. But before discussing the differences, let's get a brief overview of what the CMOS and NMOS technologies are. What is CMOS Technology? CMOS stands ... Read More

A power plant is an interconnected system of various electrical equipment that is used to generate electricity. The major components of a power plant include an alternator (or generator), a prime mover, control system, a generating transformer, etc. The prime mover is a mechanism that drives the alternator or generator to produce electrical energy. The control system governs the parameters such as voltage, power factor, reactive power, frequency, etc. of the generating system. The generating transformer is to step up the voltage of the generated power for transmission purpose. Nowadays, several types of power plants are being used for power ... Read More

In a semiconductor diode, the term breakdown implies the short circuit of the diode. As we know, the diode allows the flow of electric current in only one direction (forward direction) and blocks the flow of current in the reverse direction. But, when the applied voltage in the reverse direction exceeds a limit (called breakdown voltage), the diode starts conducting in the reverse direction as well. This stage is called the breakdown in the diode. The following two types of breakdowns take place in a PN-junction semiconductor diode − Zener Breakdown Avalanche Breakdown In this article, we shall ... Read More

In electronics and communication engineering, amplifiers and oscillators are two important circuits. The major difference between an amplifier and an oscillator is that an amplifier increases the magnitude of a signal, while an oscillator generates an oscillating signal. However, there are many more differences between an amplifier and an oscillator that we shall learn in this article. But, before highlighting the differences, let's get a brief overview of what amplifiers and oscillators are. What is an Amplifier? An amplifier is an electronic circuit which accepts a weak signal as its input and produces an output signal of high magnitude or ... Read More

Vacuum tube and Transistor are types electronic switching devices used a variety of electronic devices and circuits such as computers, communication systems, power supplies, TV, radios, amplifiers, etc. However, both are significantly different from each other based on their technology and operation. In this article, we will highlight all the points that differentiate a vacuum tube from a transistor. Let's start with some basics of vacuum tubes and transistors. What is a Vacuum Tube? A vacuum tube is an electronic device used to control the current flowing in a circuit using a vacuum in a sealed glass tube. Basically, ... Read More

In every electrical system, we need to measure various electrical quantities such as current, voltage, power, energy, etc. For this purpose various types of measuring instruments have been developed to measure the respective quantity. Go through this article to find out more about wattmeter and energy meter. We also learn about the significant differences between a wattmeter and energy meter. One major difference between wattmeter and energy meter is that the wattmeter measures electrical power in the circuit, whereas the energy meter measures total amount of energy consumed by the load.What is a Wattmeter? A wattmeter is an ... Read More

An electric circuit that is used to start an electric motor is called a starter. Depending on the type of electric motor, there are different types of starters available. In this article, we will discuss the basics of three-point starters and four-point starters which are used for DC motor starting. We will also highlight how these two types of starters are different from each other. What is a Three Point Starter? As its name implies, a three point starter (shown in the above figure) is the one which has only three points (or terminals). A typical three point starter ... Read More

A cell is a device which can convert chemical energy into electrical energy. A cell consists of two electrodes and chemical substances inside it. When the cell is connected in a circuit, the chemical reactions take place inside the cell and as a result of these chemical reactions, an electric current flows in the circuit. In this article, we will discuss about galvanic cells and electrolytic cells and how these two types of cells are different from each other.What is a Galvanic Cell?A galvanic cell is an electrochemical cell in which an electric is produced from spontaneous oxidation-reduction reactions.The galvanic ... Read More

An electric motor is an electromechanical energy conversion device which converts the electrical energy input into mechanical energy output in the form of rotation of shaft. Based on the types of electric supply and working, the electric motors are classified in many types such as DC motors, induction motors, synchronous motors, stepper motors, servo motors, and many more. In this article, we will highlight all the major differences between a stepper motor and a DC motor. But, before discussing the differences, let's start with some basics of stepper motor and DC motor. What is a Stepper Motor? A type ... Read More