Darney's Circuit Theory and Modelling : Updated and Extended for EMC/EMI.

Format:

Book

Author/Creator:

Darney, Ian B.

Contributor:

Hewitt, Chris M.

Series:

Electromagnetic Waves Series

Language:

English

Subjects (All):

Electromagnetic compatibility.

Electric circuits.

Physical Description:

1 online resource (154 pages)

Edition:

1st ed.

Place of Publication:

Stevenage : Institution of Engineering & Technology, 2024.

Summary:

The technique described in this book can be used to analyse all the mechanisms involved in the propagation of Electromagnetic Interference (EMI), avoiding the need to invoke the complexities of electromagnetic computation. The book is aimed at electrical and electronic circuit design engineers and EMI/EMC design consultants.

Contents:

Intro

Title

Copyright

Contents

About the authors

Foreword by Chris M. Hewitt

Figure border colour key

Internet link identification

1 Introduction

1.1 Introduction

1.2 Background

1.3 Assessment

1.4 Problem

1.6 Mesh analysis

1.7 Approach

1.8 Frequency analysis

1.9 Transient analysis

1.10 Conclusion

2 Cross coupling models

2.1 Introduction

2.2 Step-by-step derivation of the transmission line model

2.2.1 Definition of the model

2.2.2 Forward propagation

2.2.3 Rates of change

2.2.4 Line losses

2.2.5 Reflections

2.2.6 Two-way propagation

2.2.7 Boundary conditions

2.2.8 The transformation equations

2.2.9 Propagation velocity

2.2.10 Conclusion

2.3 The three-conductor model

2.3.1 Primitive capacitance

2.3.2 Primitive inductance

2.3.3 Primitive impedance

2.3.4 Primitive equations

2.3.5 Loop equations

2.3.6 Circuit equations

2.3.7 Definition of parameters

2.3.8 General circuit model

2.3.9 Relating the theories

2.4 The voltage injection transformer

2.4.1 Design

2.4.2 Characterisation test

2.4.3 Worksheet

2.4.4 Application

2.5 The current monitor transformer

2.5.1 Design

2.5.2 Assembly

2.5.3 Test set-up

2.5.4 Circuit model

2.5.5 Simulation

2.5.6 Definitive circuit model

2.5.7 Application

2.6 The signal link

2.6.1 Test rig

2.6.2 Test set-up

2.6.3 Current measurement

2.6.4 Test results

2.6.5 Lumped-parameter model

2.6.6 Distributed-parameter model

2.6.7 Computation

2.6.8 Modelling the peaks

2.6.9 Definitive circuit model

2.6.10 Applications

3 Multi-conductor models

3.1 Composite conductors

3.1.1 Introduction

3.1.2 Concept

3.1.3 Twin conductor assembly

3.1.4 Differential mode current

3.1.5 Component values

3.1.6 Circuit model

3.1.7 Conclusion.

3.2 The multi-potential ground

3.2.1 Introduction

3.2.2 Assembly under review

3.2.3 Current distribution

3.2.4 Circuit model

3.2.5 Differential mode

3.2.6 Conclusion

3.3 The nature of shielding

3.3.1 Introduction

3.3.2 Section under review

3.3.3 Primitive currents

3.3.4 Partial voltages

3.3.5 Voltages along elemental conductors

3.3.6 Component values for coaxial cable

3.3.7 Susceptibility

3.3.8 External components

3.3.9 Circuit model

3.3.10 Conclusion

4 Antenna models

4.1 The radiation resistance

4.1.1 Introduction

4.1.2 The dipole antenna

4.1.3 Isolated conductor

4.1.4 Measurement

4.1.5 Modelling

4.1.6 Definitive model

4.1.7 Conclusion

4.2 The virtual conductor

4.2.1 Introduction

4.2.2 The single conductor

4.2.3 Relating L and C to Z

4.2.4 Twin conductor assembly

4.2.5 Circuit parameters

4.2.6 Conclusion

4.3 Cable characterisation

4.3.1 Introduction

4.3.2 Test method

4.3.3 Circuit modelling

4.3.4 Computations

4.3.5 Assessment

4.3.6 Conclusion

4.4 Transfer admittance

4.4.1 Introduction

4.4.2 Analysis

4.4.3 Principle of reciprocity

4.4.4 Radiated emission and radiation susceptibility

4.4.5 Conducted emission and conducted susceptibility

4.4.6 Conclusion

4.5 Modelling radiated interference

4.5.1 Introduction

4.5.2 Emission

4.5.3 Propagation

4.5.4 The threat voltage

4.5.5 Power received

4.5.6 The signal link

4.5.7 Circuit model

4.5.8 Conclusion

4.6 Absorbing EMI

4.6.1 Introduction

4.6.2 EED characteristics

4.6.3 Firing system

4.6.4 Lumped parameter model

4.6.5 Distributed parameter model

4.6.6 Mathcad worksheet: page 1

4.6.7 Mathcad worksheet: page 2

4.6.8 Mathcad worksheet: page 3

4.6.9 Initial assessment

4.6.10 Modified system

4.6.11 Modified model.

4.6.12 Modified worksheet

4.6.13 Final assessment

4.6.14 Conclusion

5 Transient analysis

5.1 Time step analysis

5.1.1 Introduction

5.1.2 Basic equations

5.1.3 Series LCR circuit

5.1.4 Low pass filter

5.1.5 Assessment

5.1.6 Conclusion

5.2 Charges and photons

5.2.1 Introduction

5.2.2 Synchronisation

5.2.3 Delay line model

5.2.4 Reflections

5.2.5 Computation

5.2.6 Results

5.2.7 Assessment

5.2.8 Underlying mechanism

5.2.9 Conclusion

5.3 Power line transients

5.3.1 Introduction

5.3.2 Capacitive load

5.3.3 Inductive load

5.3.4 Assessment

5.3.5 Conclusion

5.4 Power line filter

5.4.1 Introduction

5.4.2 Basic power line

5.4.3 Adding a filter

5.4.4 Block diagram

5.4.5 Near end

5.4.6 Transmission line

5.4.7 Far end

5.4.8 First page of worksheet

5.4.9 Second page of worksheet

5.4.10 Conclusion

5.5 Transient emission

5.5.1 Introduction

5.5.2 Setup

5.5.3 Test method

5.5.4 Vertical scaling

5.5.5 Horizontal scaling

5.5.6 Modelling

5.5.7 Equations

5.5.8 Computation

5.5.9 Assessment

5.5.10 Transient emission

5.5.11 Surface charges

5.5.12 Conclusion

5.6 Answering the Catt Question

5.6.1 Introduction

5.6.2 The Catt Anomaly

5.6.3 Electromagnetic theory

5.6.4 Transmission line

5.6.5 Charges, electrons, and photons

5.6.6 Coupling mechanism

5.6.7 Emission losses

5.6.8 Magnetic field

5.6.9 Electromagnetic field

5.6.10 Conclusion

5.7 Flow of partial currents

5.7.1 Introduction

5.7.2 Drift velocity

5.7.3 Loop resistance

5.7.4 Transmission line model

5.7.5 Simulation

5.7.6 Mechanism

5.7.7 Partial currents

5.7.8 Charge carriers

5.7.9 Photon action

5.7.10 Resistance and inductance

5.7.11 Simple model

5.7.12 Conclusion

6 Three conductor transient models.

6.1 Transient cross-coupling

6.1.1 Introduction

6.1.2 Frequency response test

6.1.3 Definitive circuit model

6.1.4 Transient model

6.1.5 Transient response test

6.1.6 Resistor values

6.1.7 Source voltage

6.1.8 Propagation times

6.1.9 Reflection equations

6.1.10 Transient emission

6.1.11 Current transformer

6.1.12 Waveform

6.1.13 Oscilloscope display

6.1.14 Mathcad worksheet

6.1.15 Results

6.1.16 Assessment

6.1.17 Conclusion

6.2 Suppressing transient emission

6.2.1 Introduction

6.2.2 Testing and modelling

6.2.3 Analysis

6.2.4 Mathcad worksheet

6.2.5 Simulation

6.2.6 Accuracy

6.2.7 Application

6.2.8 Conclusion

6.3 Optimum common-mode rejection

6.3.1 Introduction

6.3.2 General circuit model

6.3.3 Optimum loading

6.3.4 Mathcad worksheet

6.3.5 Simulation

6.3.6 Far end interface

6.3.7 Conclusion

6.4 Ground bounce

6.4.1 Introduction

6.4.2 Test rig

6.4.3 Switching module

6.4.4 Test setup

6.4.5 Cross-coupling model

6.4.6 Analysis

6.4.7 Computations

6.4.8 Simulation

6.4.9 Illustration

6.4.10 Conclusion

7 Further EMC/EMI research

7.1 Dipole transients

7.1.1 Introduction

7.1.2 Frequency analysis

7.1.3 Transient analysis

7.1.4 Worksheet: first page

7.1.5 Worksheet: second page

7.1.6 Other frequencies

7.1.7 Correlating the responses

7.1.8 Assessment

7.1.9 Conclusion

7.2 Coaxial coupling model

7.2.1 Introduction

7.2.2 Setup

7.2.3 Test method

7.2.4 Developing the model

7.2.5 Assigning parameter values

7.2.6 Defining the functions

7.2.7 Main program

7.2.8 Definitive circuit model

7.2.9 Coupling mechanism

7.2.10 System considerations

7.2.11 Conclusion

7.3 Relating photons to charges

7.3.1 Summary

7.3.2 Introduction

7.3.3 Setup

7.3.4 Test method.

7.3.5 Basic model

7.3.6 Antenna-mode current

7.3.7 Antenna-mode reflection

7.3.8 Worksheet constants

7.3.9 Worksheet functions

7.3.10 Main program

7.3.11 Assessment

7.3.12 Alternative method

7.3.13 Charges and photons

7.3.14 Magnetic field

7.3.15 Electric field

7.3.16 Conclusion

Appendix A Inductance and capacitance primitives

Appendix B Mathcad worksheets

Appendix C Links to Internet resources and references

Appendix D Definitions

Index.

Notes:

Description based on publisher supplied metadata and other sources.

Part of the metadata in this record was created by AI, based on the text of the resource.

ISBN:

1-83724-454-5

1-5231-6329-1

1-83953-954-2

OCLC:

1424745928