Author: misamaliraza94
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PN Junction Theory
A PN-junction is formed when an N-type material is fused together with a P-type material creating a semiconductor diode. This tutorial about PN junction theory shows that when silicon is doped with small amounts of Antimony, an N-type semiconductor material is formed, and when the same silicon material is doped with small amounts of Boron,…
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Semiconductor Basics
Semiconductor materials are the basic building blocks of all electronic devices from transistors, to phones, to computers, and to the internet. Here in this tutorial we will look at the concepts behind semiconductor basics, the physics and the differences between insulators and conductors. If the resistor is the most basic passive component in electrical or…
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Star Delta Transformation
Star-Delta Transformations and Delta-Star Transformations allow us to convert impedances connected together in a 3-phase configuration from one type of connection to another. We can now solve simple series, parallel or bridge type resistive networks using Kirchhoff´s Circuit Laws, Mesh Current Analysis or Nodal Voltage Analysis techniques. But in a balanced 3-phase circuit we can use star delta transformation techniques…
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Maximum Power Transfer
Maximum power is transfered when the value of that load resistance is equal to the equivalent resistance of the supplying network. Maximum Power Transfer occurs when the resistive value of the load is equal in value to that of the voltage sources internal resistance allowing maximum power to be supplied. Generally, this source resistance or…
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Nortons Theorem
Nortons theorem reduces an electric circuit down to a single resistance in parallel with a constant current source. Nortons theorem is an analytical method used to change a complex circuit into a simple equivalent circuit consisting of a single resistance in parallel with a current source Nortons Theorem states that “Any linear circuit containing several energy…
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Thevenin’s Theorem
Thevenin theorem is an analytical method used to change a complex circuit into a simple equivalent circuit consisting of a single resistance in series with a source voltage. In the previous three tutorials we have looked at solving complex electrical circuits using Kirchhoff’s Circuit Laws, Mesh Analysis and finally Nodal Analysis. But there are many…
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Nodal Voltage Analysis
Nodal Voltage Analysis finds the unknown voltage drops around a circuit between different nodes that provide a common connection for two or more circuit components. Nodal Voltage Analysis complements the previous mesh analysis in that it is equally powerful and based on the same concepts of matrix analysis. As its name implies, Nodal Voltage Analysis uses the “Nodal”…
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Mesh Current Analysis
Mesh Current Analysis is a technique used to find the currents circulating around a loop or mesh with in any closed path of a circuit. While Kirchhoff´s Laws give us the basic method for analysing any complex electrical circuit, there are different ways of improving upon this method by using Mesh Current Analysis or Nodal Voltage Analysis that results…
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Kirchhoffs Circuit Law
Kirchhoffs Circuit Laws allow us to solve complex circuit problems by defining a set of basic network laws and theorems for the voltages and currents around a circuit. Using Kirchhoffs circuit law relating to the junction rule and his closed loop rule, we can calculate and find the currents and voltages around any closed circuit…
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Electrical Units of Measure
Electrical Units of Measurement are used to express standard electrical units along with their prefixes when the units are too small or too large to express as a base unit. The standard electrical units of measure used for the expression of voltage, current and resistance are the Volt [ V ], Ampere [ A ] and Ohm [ Ω ] respectively. These electrical units of measurement are…