PROCEEDINGS OF THE IEEE, VOL.
70,
NO.
3, 315
MARCH 1982
[ 21 D. E. Johnson and J. L. Hilburn, Rapid Practical Designs of Active
Filters. New York: Wiley, 1975.
Reprinted from Circuits and Systems Magazine, June
198 1.
Electric Machine Theory for Power Engineers-Van E. Mablekos (New
York: Harper & Row, 1981, 698 pp.). Reviewed by MehdiEtezadi85036.
Amoli, ArizonaPublic Service Co., Phoenix, AZ
This is indeed a welcome addition to the set of several exciting introductory books on electromechanical energy conversion devices. It is a
well-suited text foran introductory course for electrical engineering
studentswithinterest in power systems. The traditionalsubjects of
electric machinery, i.e., transformers, dc machines, induction machines,
andsynchronous machines, arethoroughly covered without resorting
tomany complicatedelectromagnetic field theorems andequations.
Many numerical examples demonstratethetheoryand
principles set
forth in the text; the abundance
of excellent figures, diagrams, and
actual pictures serves to illustrate theimportant concepts. For the
benefitof the students interested in control theory, simple dynamic
analyses of several machines, using the sdomain techniques, are presented at the end of selected chapters.
The book consists of seven chapters and four appendices. Chapters
1-4 cover transformers, dc machines, three phase system theory, and
induction motors, respectively. The chapter on dc machines also contains analog simulation and CSMP programs for descniing thedynamics
of a dc machineunder different excitations. The remaining chapters
are
dedicated
to synchronous machines. Elementary
synchronous
machines and measurementof three-phase synchronous devices are
topics of Chapters 5and 7, respectively. Systemsconsiderations of
synchronous machines are covered in Chapter 6. Topics such as connection to an infinite bus, excitation
systems, parallel operations, dynamic analysis, and swing equations are presented in this chapter.
Consistent withthestatement
at the preface, theauthor presents
material useful to students in control systems. Since stepping motors
are used in a variety of control systems application, a section covering
the theory, controls, and applications of these motors would have been
a valuable addition to the book.
The general organization of the book is reasonable in terms of both
overall coverage and chapter headings. Each chapter includes asummary, a set of homework problems and a reference list. The text can be
used in a two-semester course for electrical engineering students with a
major in power systems. However, proper selection of the material in
the text allows one to design a onesemester course in electric machine
theory.
Reprinted from IEEE Circuits and Systems Magazine, September,
1981.
Introduction to Microprocessors-A. P. Mather (New Delhi, India: Tata
McGraw-Hill Ltd., 1980,370 pp.). Reviewed by R. C. Desai, Electrical
Engineering Department, M.S. University of Baroda, Vadodnra 390001,
India.
It is predicted that microprocessors, programmable logic devices, will
have a tremendous impact not only upon conventional digital systems
presently employed in instrumentation and computer networks butalso
on common appliances used in daily life to enhance the comforts and
conveniences of human life during the next decade. As such, any new
bookwrittenonthe
fascinatingsubjectofmicroprocessors
deserves
cordial welcome.
There are two distinct approaches through which this subject can be
introduced to a reader. One approachcould betheintroduction of
general concepts regarding the architecture and programming of microprocessors without reference to any particular model and thenconsidering specific microprocessors only as examples. But in order to present
the general principles in an integrated and coherent manner, the author
has chosen theopposite
approach:Introducingaparticular
microprocessor (Intel 8085) first, followed by a generalization of the concepts
and their illustration using microprocessors.
The contents of this book includes binary numbers and arithmetic,
semiconductor memories, organizations of Intel 8085 interfacing memchapteron interfacing
ory and 1/0devices. Besides thesetopics,a
devices andperipheralsubsystems
reveals the availability of specialpurposechipsand
discusses the detailsofperipheralinterface,and
interrupt and digital microcircuit (DMA) controllers and also analog to
digital converter (ADC) and digital to analog converter (DAC) devices.
A chapter devoted to microprocessor applications presents in detail the
complete hardware and software
for an open-loop temperature monitoring system. It also discusses in brief other microprocessor applications for closed-loop process controls for growth control of synthetic
quartz crystal, data acquisition systems, and 1 / 0 device control. The
last-but+ne chapter descnies in brief the hardware and software subsystems available from several manufacturers as an aid to the design
and development of microprocessor and microcomputer-based systems.
The last chapter discusses the architecture and working of the 16-bit
Intel 8086 microprocessor which has an architecture superior to that of
the 8085.
Appendices include the instruction ,sets for the Intel 8085 and 4004.
The set of instructions for the 8085 will also be useful for those working with 8080 microprocessorsbecause 8080 is 100 percentupward
softwarecompatible with the 8085 and both
can be madehardware
compatible with the addition of a few extra devices. The author emphatically mentions that this book is notintendedto
replace any
manual, and that Intel manualsmust be followed for complete data
required for design purposes.
Though theauthor claims to have made theeffort of making the
book self-sufficient by providing the necessary background material in
Chapters 2 and 4, the reviewer is of the opinion that the author should
have discussed the fundamentals of digital electronics in greater detail,
adding 10 to 15 extrapages to the book.
Reprinted from IEEE Transactions on Systems, Man, and Cybernetics,
October 198 1.
Electronic Communications (2nd Ed.)-Dennis Roddy and John Coolen
(Reston, VA: Reston Publishing Co., 1981,620 pp.). Reviewedby
Rodger E. Ziemel, University OfMissouri-Rolla,MO.
According to the preface, this book is intended for use in the final
year of a technology program in telecommunications. It is well written
andcontains much information on circuits, devices, andsystems for
telecommunications, including integrated circuits
for communications
applications. Being written fortechnology programs, the exposition
tends toward being more descriptive than mathematical.
The book is organized into fwe parts. These are: “Communications
Fundamentals,” which includes chapters on passive circuits, waveforms
and spectra, audio signals and noise; “Electronic Communications Circuits,” which consists of chapters onamplifiers, oscillators, and receivers;
“Modulation of Signals,” which is composed of chapters on amplitude
modulation, single-sideband modulation, angle modulation, and pulse
modulation; “Transmission and Radiation of Signals,” which contains
chapters on transmission lines and cables, waveguides, radio-wave
propagation, and antennas; and “Communications Systems,” which has
chapters on telephone systems, digital communications, and
facsimile
and television signals for its content. Included also are appendices on
logarithmic units and transverse electromagnetic waves. A selection of
problems follows each chapter, mainly of the drill or essay variety.
The coverage of the book, being broad, necessarily lacks depth. Two
cases in point are the chapters on waveform spectra, in which results
are given with few derivations (the Fourier transform is not mentioned),
and the chapter on digital communications in which many topics are
touched upon, butwith barest of detail.
In general, 1 found this book very readable, particularly the material
in Part Four. While the inclusion of information on discrete and integrated circuits for telecommunications is welcome, one always runs the
risk of such material going out of date in a short time span-usually fiie
years. In fact, a colleague of mine, who is the head of an industrial
research laboratory, pointed out to me that much of the circuits information in the text is already five years out of date, which isn’t too
surprising given the length of time required to produce a text book. If
exposing the student to a broad range of topics with little theory is
desired, then this book fulfidls its stated purpose. It is definitely not
the type of text one would use in an engineering program, but could
serve as a supplemental source ofinformation on various topics.
Reprinted from IEEE CommunicationsMagazine, November
1981.
The Politics of Privacy: Planning for Personal Data Systems as Powerful Technologies-James Rule, Douglas McAdam, Linda Steams, and
DavidUglow (New York: Elsevier, 1980, 212 pp.). Reviewed by Sidney Birnbaum, California State Polytechnic University, Pomona,C A .
In the early sixties a tentative proposal was advanced to form a Mtional data bank by linking together some six hundred separate federal
repositories of personal data. The proposal envisioned a statistical data
bank to be used primarily for research. That many of us were uneasy,