Fundamentals of Electronic Circuit Design

Fundamentals of Electronic Circuit Design

By Hongshen Ma

Preface ? Why Study Electronics?

Purely mechanical problems are often only a subset of larger multi-domain problems faced by the designer. Particularly, the solutions of many of today's interesting problems require expertise in both mechanical engineering and electrical engineering. DVD players, digital projectors, modern cars, machine tools, and digital cameras are just a few examples of the results of such combined innovation. In these hybrid systems, design trade-offs often span the knowledge space of both mechanical and electrical engineering. For example, in a car engine, is it more cost-effective to design a precise mechanical timing mechanism to trigger the firing of each cylinder, or is it better to use electronic sensors to measure the positions of each piston and then use a microprocessor to trigger the firing? For every problem, designers with combined expertise in mechanical and electrical engineering will be able to devise more ideas of possible solutions and be able to better evaluate the feasibility of each idea.

A basic understanding of electronic circuits is important even if the designer does not intend to become a proficient electrical engineer. In many real-life engineering projects, it is often necessary to communicate, and also negotiate, specifications between engineering teams having different areas of expertise. Therefore, a basic understanding of electronic circuits will allow the mechanical engineer to evaluate whether or not a given electrical specification is reasonable and feasible.

The following text is designed to provide an efficient introduction to electronic circuit design. The text is divided into two parts. Part I is a barebones introduction to basic electronic theory while Part II is designed to be a practical manual for designing and building working electronic circuits.

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Part I

Fundamentals Principles

By Hongshen Ma

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Important note:

This document is a rough draft of the proposed textbook. Many of the sections and figures need to be revised and/or are missing. Please check future releases for more complete versions of this text.

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Fundamentals of Electronic Circuit Design

Outline

Part I ? Fundamental Principles

1 The Basics 1.1 Voltage and Current 1.2 Resistance and Power 1.3 Sources of Electrical Energy 1.4 Ground 1.5 Electrical Signals 1.6 Electronic Circuits as Linear Systems

2 Fundamental Components: Resistors, capacitors, and Inductors 2.1 Resistor 2.2 Capacitors 2.3 Inductors

3 Impedance and s-Domain Circuits 3.1 The Notion of Impedance 3.2 The Impedance of a Capacitor 3.3 Simple RC filters 3.4 The Impedance of an Inductor 3.5 Simple RL Filters 3.6 s-Domain Analysis 3.7 s-Domain Analysis Example 3.8 Simplification Techniques for Determining the Transfer Function 3.8.1 Superposition 3.8.2 Dominant Impedance Approximation 3.8.3 Redrawing Circuits in Different Frequency Ranges

4 Source and Load 4.1 Practical Voltage and Current Sources 4.2 Thevenin and Norton Equivalent Circuits 4.3 Source and Load Model of Electronic Circuits

5 Critical Terminology 5.1 Buffer 5.2 Bias 5.3 Couple

6 Diodes 6.1 Diode Basics 6.2 Diode circuits

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