INTERMEDIA TE
ELECTRONICS
INTERMEDIATE
ELECTRONICS
R. J. MADDOCK
C. Eng., M.I.E.R.E.
Lecturer in E/ectronics,
Department in Electrical Engineering,
Southampton College of Technology
Book I
Springer Science+Business Media, LLC
ISBN 978-1-4899-5861-7 ISBN 978-1-4899-5859-4 (eBook)
DOI 10.1007/978-1-4899-5859-4
© Springer Science+Business Media New York 1969
Originally published by Butterworth & Co. (Publishers) Ltd. in 1969.
Softcoverreprint of the hardcover Ist edition 1969
Suggested U.D.C. number: 621·37/·38
Library of Congress Catalog Card Nurober 69-18297
PREFACE
Many textbooks adequately cover the development of small signal
equivalent circuits for electronic devices. Students frequently
experience difficulty in applying such circuits to the solution of the
various configurations found in practice. In this volume I have
demonstrated step by step procedures by which the required solutions
may be obtained by the use of such equivalent circuits.
The first chapter shows clearly the necessity for equivalent circuit
methods and also discusses the d.c. biasing requirements and circuits
for valve and transistor amplifiers. A chapter follows covering the
fundamentals of network analysis required for the remainder of the
book. Valve and transistor equivalent circuits are then introduced.
and detailed methods of application are given with many fully
worked examples. Later chapters extend these methods to a dis-
cussion on the effects of feedback, the solution of practical feedback
amplifiers and to the analysis and design of a range of sinusoidal
oscillators. A final chapter introduces the modifications required
when considering high frequency operation. The required high
frequency equivalent circuits are given together with sample
calculations.
I have included worked solutions and problems with answers in
all chapters. The parameters chosen for the various equivalent
circuits are those most commonly available from manufacturers'
published data. British Standard symbols and units are used through-
out except where very recent changes may be unfamiliar to the
majority of students.
Both valve and transistor circuits are discussed as I feel that for
many students the valve provides a useful teaching medium, but
in the later chapters, the stress is, in general, on transistor circuits.
The physical operation of the devices has not been covered, as
adequate Iiterature is available elsewhere. A list of works for further
reading is provided at the end of the book.
I have written this book as a result ofthe experience gained through
teaching students at Higher National Diploma and Certificate level
but I feel that it should also be useful for students at the early stages
of degree courses and the final year of technician courses.
V
PREFACE
I would like to offer my thanks to those members of the staff and
students of Southampton College of Technology who have helped
in the preparation of this book and to Miss L. Lavender and Mrs. R.
Huntingford for their assistance in typing the manuscript.
R. M.
vi
CONTENTS
Preface v
1. Graphical Analysis of Electronic Circuits . 1
2. Fundamentals of Network Analysis . 42
3. Low Frequency, Small Signal Equivalent Circuits for Valves
and Transistors . 94
4. Use of the Valve Equivalent Circuit. 112
5. Use of Transistor Equivalent Circuits 140
6. The Theory of Feedback Amplifiers. 181
7. Practical Feedback Amplifiers . 220
8. Oscillators 255
9. Modifications to Equivalent Circuits for High Frequency
Operation . 291
Appendix 1. Use of Logarithmic Units 312
Works for Further Reading 315
Index 317
vii
