Basics of Electrical Engineering

Polarity of Voltage and Direction of Current

EE September 29, 2017

Polarity and direction are two basic concepts that are associated with electrical components. In this post, you'll learn the basics...

Conversions

Voltage Sources in Series Configuration

EE September 26, 2017

A circuit with two or more than two voltage sources can be reduced to a single voltage source. The value and orientation of final v...

Conversions

Basics of Rectangular and Polar form Conversions [Complex Numbers]

EE September 19, 2017

The complex number is a sum of real and imaginary part. Such number is of the form a + jb, where a is the real part and b is the imaginary...

Wye to Delta conversion

Wye to Delta Conversion

EE September 14, 2017

In this post, you'll learn about Wye to Delta conversion formulas and examples. We previously studied about the Delta to Wye conv...

Practical

Basics of LED - Light Emitting Diode

EE September 13, 2017

LED (light emitting diode) is an electronic component which emits electrical light. In this post, you'll learn about: Symbol and co...

Parallel resistors

Example of Four Parallel Resistors of 10 ohms

EE September 13, 2017

Four resistors are connected in a parallel configuration. Each of them has a value of 10 ohms. Find the equivalent resistance at the termin...

Main

Theory for Basics of Electrical Engineering

EE September 12, 2017

This section presents basic topics of Electrical Engineering. Various examples are added for the reference. Basic properties of electr...

Main

Practical Lessons in Electrical Engineering

EE September 12, 2017

Basics of AC and DC power Basics of batteries Basics of breadboard Basics of dam Basics of digital oscilloscope Basics of diode B...

Delta to Wye Conversion

Delta to Wye Conversion Formulas with Examples

EE September 11, 2017

The delta and wye connections are two special arrangments which are often used in electrical circuits. In this post, you'll learn abou...

Current divider

How to apply CDR for three resistors

EE September 10, 2017

Three resistors are joined in a parallel configuration. The values are 8 Ω, 10 Ω and 7 Ω. Using current divider, find the current flowing t...

Practical

Basics of Digital Oscilloscope

EE September 09, 2017

The oscilloscope is an electronic graph displaying device which plots electrical signals against time. In this article, you'll: Lear...

Series Parallel Networks

Series-Parallel Circuit Example # 1: A network containing 4k, 8k and 12k [1bee]

EE September 08, 2017

Statement: An electrical network contains three resistors of 4k, 8k and 12k in series-parallel configuration as shown in the figure below. ...

Norton theorem

Norton Theorem Example # 2: Norton Equivalent for a Circuit with two Input Voltages

EE September 07, 2017

Statement: An Electrical network contains two voltage sources of 10 V and 20 V, and three resistors 5 k, 25 k and 15 k powering the load re...

Kirchhoff's current law

Kirchhoff's Current Law Example # 2: 9 Resistors join in a network

EE September 06, 2017

9 Resistors are connected in a network. 4 branch currents are known, Find the unknown values. Solution: Solving such circuit for unknow...

Resistors

Types of Resistor: Fixed and Variable Resistors

EE September 02, 2017

All resistors are classified into two major classes. A fixed resistor exhibits essentially constant value of resistance, whereas a varia...