A transformer is a static electric machine which changes the level of voltage and current in the circuit without changing the power and supply frequency. The electrical transformer works on the principle of mutual inductance.Based upon the number of windings used in the transformer, they can be grouped into two different categories −Two-winding transformer (or typical transformer or conventional transformer)AutotransformerRead through this article is to find out the major differences between two-winding transformer and autotransformer.What is a Two-Winding Transformer?A two-winding transformer or conventional transformer is one which consists of two magnetically coupled windings (primary and secondary) which are electrically insulated ... Read More

Multimeter and Voltmeter are handheld measuring devices. Voltmeters are used when one needs to measure only voltage. Multimeters, in contrast, can be used to measure multiple electrical quantities such as current, voltage, resistance, etc.Go through this article to find out the features of multimeters and voltmeters and how they differ from each other.What is a Multimeter?Multimeter, as the name implies, is a combination of different measuring instruments in a single unit. It can measure several electrical quantities such as current, voltage, resistance, etc. An extended version of multimeter can also measure other electrical properties like transistors gain, diode forward voltage, ... Read More

BJTs are three-terminal semiconductor devices used for switching and amplification of signals. MOSFETs, on the other hand, are four-terminal semiconductor devices used for switching applications. Read through this article to find out more about BJTs and MOSFETs and how they differ from each other.What is BJT?BJT stands for Bipolar Junction Transistor. It is a type of transistor in which the current flow is due to two types of charge carriers viz. electrons and holes. A BJT consists of three alternating layers of P-type and N-type semiconductor materials and two P-N junctions. The BJT has three terminals viz. emitter (E), base ... Read More

Semiconductor devices are extensively used in the field of electronics. A semiconductor is a substance whose resistivity lies between conductors and insulators. Semiconductors have negative temperature co-efficient. The resistance in semiconductors increases with the decrease in temperature and vice versa. The conducting properties of a semiconductor changes, when a suitable metallic impurity is added to it.In this article, we will highlight the major differences between intrinsic and extrinsic semiconductors by considering different parameters such as doping level, conductivity, charge density, etc.What is an Intrinsic Semiconductor?A semiconductor material in its pure form is known as an intrinsic semiconductor. Thus, the intrinsic ... Read More

Electrical engineering deals with the study of how to generate, transmit and utilize the electrical energy. Electronics engineering, on the other hand, deals with the study of how to control and switch the flow of electrical energy in a circuit. Go through this article to find out the other major differences between electrical and electronics engineering.What is Electrical Engineering?Electrical engineering is the branch of engineering which deals with the generation, transmission, distribution and utilization of electrical energy.Electrical engineering is also concerned with study and design of electrical machines. The field of electrical engineering provides solutions for problems in various fields ... Read More

Bipolar Junction Transistor (BJT) and Insulated Gate Bipolar Transistor (IGBT) are two types of transistors that are used in electronic circuits to control the currents. Read through this article to get an overview of how BJTs and IGBTs function and the major differences between them.What is BJT?BJT stands for Bipolar Junction Transistor. The BJT is a three layer, three terminal semiconductor device which is used in the electronic circuit for switching and amplification of signalsA BJT is formed by sandwiching either a P-type or N-type material between two layers of N-type material or P-type material respectively. Thus, based on the ... Read More

Power transformers and Distribution transformers are extensively used in power systems for stepping up and down the voltage level for various applications such as transmission and distribution. Read through this article to find out the major differences between power transformers and distribution transformers and how they function.What is a Transformer?A Transformer is a static electrical machine which changes the level of voltage and current in a circuit without changing the frequency of the supply. Transformers works on the principle of electromagnetic induction.Based on the design, operation, purpose of use, transformers are classified into different types such as auto-transformer, current transformer, ... Read More

Both conductors and insulators are extensively used in various fields of electrical and electronics engineering. In this article, we will compare and contrast the various features of conductors and insulators and how they function.What is a Conductor?The material which allows the electric current to pass through it is known as conductor. In other words, the material which has less than 4 electrons in its outermost shell is known as conductor.When electric potential is applied across a conductor, the electrons can freely move from atom to atom. In a conductor, the valance band and the conduction band are overlapped each other. ... Read More

LED lamps consume less energy as compared to Halogen lamps. LED lamps are cost efficient too. Read through this article to find out the major differnces between LEDs and Halogen lamps and how they function.What is LED Lamp?An electric lamp which produces light by using light emitting diodes or LEDs is known as an LED lamp or LED light bulb. An LED lamp works on the principle of electroluminescence, i.e. it emits the light due to the interaction of an electric field with a suitable solid.Basically, an LED is a specially doped PN junction diode which is made of special ... Read More

Both analog and digital circuits are extensively used in various fields of electrical and electronics engineering for signal processing. Go through this article to find out how analog and digital circuits function and how they differ from each other.What is an Analog Circuit?An analog circuit is a type electronic circuit that can process any analog signal or data and produce an output in analog form. Analog circuits are composed of resistors, inductors and capacitors, etc.The type of signal which is a continuous function of time is known as an analog signal. All the real-world signals are the analog signals, therefore, ... Read More