EMC for Product Designers

EMC for Product Designers

Meeting the European EMC Directive

1st Edition - August 5, 1992

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  • Author: Tim Williams
  • eBook ISBN: 9781483183886

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EMC for Product Designers: Meeting the European EMC Directives is a six-chapter text that considers the by-product of the co-existence of all kinds of radio services, called electromagnetic compatibility (EMC). This book discusses the solution to the damaging frequency interference of EMC and the problem of EMC to electronic equipment. The opening chapter considers the effect of adapting the EMC Directives to decrease the economic damage being caused by electromagnetic interference, as well as the analysis, definition, and compliance of EMC and EMC Directives. The next chapters deal with the measurement of EMC; RF emission testing; features of circuits, layout, and grounding; digital and analogue circuit design; and description of interfaces, filtering, and shielding. These topics are followed by discussion of the equipment for mains harmonic emission, the facilities and equipment for measuring RF susceptibility, and the transient susceptibility to ESD. The concluding chapters examine the use of performance criteria in measuring EMC. These chapters describe the features and application of the Fourier spectrum. The book can provide useful information to economists, engineers, radio technicians, students, and researchers.

Table of Contents

  • Preface

    Chapter 1 Introduction

    What Is EMC?

    Compatibility between Systems

    The Scope of EMC

    The Compatibility Gap

    The EMC Directive

    The New Approach Directives

    Background to the Legislation

    Scope, Requirements and Exceptions

    The CE Mark and the Declaration of Conformity

    Manufacturing Quality Assessment

    Systems and Installations

    Enforcement and Sanctions

    Compliance with the Directive

    Self Certification

    The Technical Construction File

    The Transition Period

    Telecommunications Terminal Equipment

    Testing and the Competent Body


    Action for Compliance

    Chapter 2 Standards

    The Standards Making Bodies

    The International Electrotechnical Commission


    Standards Relating to the EMC Directive - Emissions

    EN 50 081 Part

    pr EN 50 081 Part 2

    EN 55 O11*

    EN 55 013*

    EN 55 014*

    EN 55 015*

    EN 55 022*

    EN 60 555 Parts 2 and 3*

    Standards Relating to the EMC Directive - Immunity

    EN 50 082 Part 1

    pr EN 50 082 part 2

    pr EN 50 093

    EN 55 020*

    pr EN 55 101

    IEC 801

    Other Standards

    FCC Rules

    German Standards

    Other Non-Harmonized Standards

    RF Emissions Limits

    Chapter 3 EMC Measurements

    RF Emissions Testing

    Measurement Instrumentation



    Test Methods

    Sources of Uncertainty

    RF Susceptibility



    Test Methods

    Conducted RF Susceptibility

    ESD And Transient Susceptibility



    Sources of Uncertainty

    Evaluation of Results

    Performance Criteria

    Mains Harmonic Emission


    Test Conditions

    Chapter 4 Interference Coupling Mechanisms

    Source and Victim

    Common Impedance Coupling

    Mains Coupling

    Radiated Coupling


    Radiated Emissions

    Conducted Emissions

    Mains Harmonics


    Radiated Field


    Electrostatic Discharge

    Magnetic Fields

    Supply Voltage Fluctuations

    Chapter 5 Circuits, Layout and Grounding

    Layout and Grounding

    System Partitioning


    Ground Systems

    PCB Layout

    Ground Plane

    Loop Area

    Configuring I/O Grounds

    Rules for Ground Layout

    Digital and Analog Circuit Design

    The Fourier Spectrum

    Radiation from Logic Circuits

    Analog Circuit Emissions

    The Switching Power Supply

    Design for Immunity - Digital Circuits

    Logic Noise Immunity

    The Microprocessor Watchdog

    Defensive Programming

    Transient and RF Immunity - Analog Circuits

    Chapter 6 Interfaces, Filtering and Shielding

    Cables and Connectors

    Cable Segregation and Returns

    Cable Screens at Low Frequencies

    Cable Screens at RF

    Types of Cable Screen

    Screened Cable Connections

    Unscreened Cables


    Filter Configuration


    Mains Filters

    Ι/Ο Filtering

    Transient Suppression

    Contact Suppression


    Shielding Theory

    The Effect of Apertures

    Shielding Hardware

    Appendix A Design Checklist

    Appendix Β EMC Test and Control Plans

    Control Plan

    The Purpose of the Control Plan


    Test Plan

    The Need for a Test Plan


    Test and Calibration Procedures

    Susceptibility Criteria

    Appendix C Useful Tables and Formula

    The Decibel




    Capacitance, Inductance and PCB Layout


    Fourier Series

    Appendix D CAD For EMC


    Available Packages

    Circuit CAD

    Appendix Ε The EC And EFTA Countries

    The European Community

    The European Free Trade Association




Product details

  • No. of pages: 272
  • Language: English
  • Copyright: © Newnes 1992
  • Published: August 5, 1992
  • Imprint: Newnes
  • eBook ISBN: 9781483183886

About the Author

Tim Williams

Tim Williams worked for a variety of companies as an electronic design engineer, before startinghis own consultancy specializing in EMC design and test advice and training. He has monitored the progress of the EMC Directive and its associated standards since it was first made public, over the last 25 years.

Affiliations and Expertise

Elmac Services, Wareham, UK

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