Platt - Magnetic Amplifiers Theory and Application

254 Pages·2012·42.99 MB·English

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DATE DUE
1 1
DEMCO 38-297
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MAGNETIC AMPLIFIERS
Theory and Application
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MAGNETIC AMPLIFIERS
Theory and Application
SIDNEY PLATT
Director of Engineering Research and Development
Warner, Incorporated
PRENTICE-HALL, INC.
Englewood Cliffs, N. J., 1958
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©— 1958 by
PRENTICE-HALL, INC.
Englewood Cliffs, N. J.
ALL RIGHTS RESERVED. NO PART OF THIS BOOK MAY BE
REPRODUCED IN ANY FORM, BY MIMEOGRAPH OR ANY OTHER
MEANS, WITHOUT PERMISSION IN WRITING FROM THE
PUBLISHERS.
Library of Congress Catalog Card Number: 58-11838
PRINTED IN THE UNITED STATES OF AMERICA
54547
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TK
16559
Preface
Within a relatively short period of time, the magnetic amplifier has
assumed a role of prime importance as a valuable and helpful tool of
industry. Its adaptability and versatility, and its present and potential
applications, have combined to assure it a bright future.
This book summarizes the history and development of the mag-
netic amplifier from its origin as a simple saturable-core reactor device
to the sophisticated feedback amplifier of the present date. Basic
magnetic theory is discussed rather briefly; the operation of the
saturable reactor and the magnetic amplifier is described in full detail.
The text presents scores of industrial and commercial applications
and examines future uses of the magnetic device.
Chapters 1 through 3 of this volume provide an introduction to,
and history of, the magnetic amplifier and offer a review of the ele-
ments of magnetism, electromagnetism, and electromagnetic induc-
tion. Chapter 4 describes the basic saturable reactor, and a large
number of applications of the fundamental reactor are covered in
Chapter 5. The primary magnetic amplifier, in its non-feedback state,
is treated in Chapter 6, and applications of this unit are discussed in
Chapter 7. Chapters 8 and 9 describe the effects of external and in-
ternal feedback on magnetic amplifiers, with respect to the operation
and application of the devices. Additional applications of the mag-
netic amplifier are described in Chapters 10 through 12; properties
and characteristics of the amplifier follow in Chapter 13.
This book is intended for the undergraduate and graduate student
in electrical and electronic engineering, and as a source of reference
data for the practicing engineer, teacher, and technician. The ma-
terial is so organized that the student, engineer, or technician, starting
at the beginning of the book and continuing through to the end, will
gain a comprehensive knowledge of the existing magnetic amplifier art.
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vi
PREFACE
Many of the circuits illustrated in this text are patented. Conse-
quently the reader must note that no commercial use of any circuit
contained herein should be made without obtaining prior approval
from the patent holder. No responsibility is assumed by the author or
the publisher for any infringement of patent or other rights of third
parties which may result from the use of circuits, systems, or processes
described or referred to in this volume.
The author wishes to thank the manufacturers represented in this
book for their assistance in supplying circuit schematics and data.
The author also wishes to acknowledge the aid and assistance offered
by the members of his family during the time in which this book was
conceived and written.
Sidney Platt
August 1958
Malverne, K. T.
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