Practical Electronic Circuits
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Practical Electronic Circuits

A Strong Foundation for Creating Electronic Projects

About the Book

This book Practical Electronic Circuits: A Strong Foundation for Creating Electronic Projects  is designed to provide skills and a hands-on practical experience for students of electronic engineering and computer science. It also provides a good foundation for anyone interested in learning how to create electronic projects.

Electronics curricula are densely packed in many engineering and computer science colleges. This book therefore is a great help because it treats each topic thoroughly. So it is a great companion.

The book will be of great help for your electronics education because it is filled with simple and moderately complex practical projects. Links to stores where you can get very cheap electronic parts to work with are also included.

You will also learn how to be safe in your workspace, and how to develop the courage you need to carry out any electronic project. A step by step approach is used to explain the process of carrying out an electronic project.

This book is also a great value for every electronics students undergoing technical training. It encourages them through providing useful technical advice needed in a highly practical environment, with a clearly defined problem so they do not get stuck while building even complex projects.

About the Author

A. B. Lawal
A. B. Lawal

I am multi-talented. As a computer engineer and a computer scientist, I have over 15 years of teaching experience in software development and computer hardware architecture. I am the CEO of Ojula Technology Innovations, a book publishing company. I co-publish my books with Charles H. Johnson who also offers technical assistance to my company. In the last few years I have helped the IT industry develop various useful programs on Windows, MacOS and PLCs (programmable logic controllers).

I always build solutions from scratch and go as far as modifying open source software to meet my client’s needs. As an embedded systems expert, I design embedded Systems that optimize performance and cost against complex requirements. I leverage Stratify OS (a POSIX like RTOS for micro-controllers) to quickly and cost-effectively develop complex firmware applications in Python and C/C++ languages. I work with a dedicated team of Python programmers who look into specific automation problems and proffer solutions to them.

For any inquiry, you can contact us with any of the email addresses below any time. If you want to contribute your knowledge to this website, or if you have a request, just send us your message. We promise to do our best to help.

Bolakale Aremu (CEO), Founder info@ojulaweb.com, OjulaTech@gmail.com.

Charles H. Johnson (Co-publisher and Technical Assistant) amandamorin3000@gmail.com.

Table of Contents

  • Preface

  • About the Author

  • 1. Fundamentals of Electronic Circuits

  • 1.1 Power Supplies & Electronic Signals
  • 1.1.1 Power Supply
  • 1.1.2 Electronic Signal
  • 1.2 Electricity: Charges & Current
  • 1.2.1 Electric Charge
  • 1.2.2 Electric Current
  • 1.2.3 Current Drawn By Common Electronic Devices

  • 1.3 Electric Voltage, Grounds & Power
  • 1.3.1 Electric Voltage
  • 1.3.2 Grounds
  • 1.3.3 Electric Power
  • 1.3.4 Electric Heat

  • 1.4 Conductors, Resistors & Semiconductors
  • 1.4.1 Conductors, Insulators & Resistivity
  • 1.4.2 Electrical Resistance & Resistivity
  • 1.4.3 Conductivity
  • 1.4.4 Good Conductors, Poor Conductors & Semiconductors
  • 1.4.5 Semiconductors

  • 1.5 Resistor Symbols, Types & Color Codes
  • 1.5.1 Active & Passive Components
  • 1.5.2 Resistor Symbols
  • 1.5.3 Ohm’s Law
  • 1.5.4 Types of Resistors

  • 1.5.5 Thermistor
  • 1.5.6 Varistor Resistor
  • 1.5.7 LDR (Light Dependent Resistors) or Photo Resistor
  • 1.5.8 Surface Mount Resistor (SMD)
  • 1.5.9 Standard Resistors

  • 1.5.10 Resistor Tolerance
  • 1.5.11 The E-Series
  • 1.5.12 How to Read Resistor Color Codes
  • 1.5.13 How to Read 4-Color Coded Resistors
  • 1.5.14 Zero-Ohm Resistor
  • Practice Exercise 1: Reading Color Codes

  • 1.5.15 How to Read 5-Color Coded Resistors
  • 1.5.16 How to Read 5-Color Coded Resistors with Reliability Band
  • 1.5.17 How to Read the Color Codes of Surface-Mount (SMD) Resistors
  • 1.5.18 How to Read 6-Color Coded Resistors with TCR
  • 1.5.19 How to Understand Resistor Power Ratings
  • Practice Exercise 2: Building a Current-Limiting Circuit for an LED

  • 1.6 Resistor Networks: Series & Parallel Combinations
  • 1.6.1 The Series Combination
  • 1.6.2 The Parallel Combination
  • 1.6.3 The Voltage Divider Circuit: How to Use Resistors to Tap Voltages
  • Practice Exercise 3: Building Resistor Networks & Divider Circuit

  • 1.7 Open, Closed & Short Circuits
  • 1.7.1 Difference Between Open & Closed Circuits
  • 1.7.2 Short Circuits & Dangers of Overloading
  • 1.8 Electrostatic Charge Protection
  • 1.8.1 How to Protect Electronic Components from Static Discharges
  • 1.9 Electronic Switches
  • 1.9.1 Categories of Switches
  • 1.9.2 Types of Switches
  • Practice Exercise 4: Using DPDT Switch to Control Light & Alarm Circuits

  • 1.10 Understanding Wires, Cables & Wire Gauges
  • 1.10.1 Difference Between Wire & Cable
  • 1.10.2 Wire Gauges
  • 1.10.3 Types of Cables Used in Electronics & Telecommunication

  • 2. How to Set up A Modest Workshop for Yourself

  • 2.1 Where You Can Set up A Modest Workshop
  • 2.1.1 The Essential Ingredients of a Good Workshop
  • 2.2 The Basic Hand Tools for Your Workshop
  • 2.3 Basic Electronic Components for Your Workshop

  • 3. Workshop Safety: How to Stay Safe

  • 3.1 General Workshop Safety
  • 3.2 Personal Workshop Safety
  • 3.2.1 Soldering Safety
  • 3.3 Safety from Unexpected High Voltages

  • 4. More Helpful Resources

  • Conclusion

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