Basic Electrical Circuit Research Articles

Basic Electric Circuit Analysis - D. E. Johnson, J. L. Hilburn, and J. R. Johnson [Book Reviews

The reviewer feels the presentation of material in this text is logical and easily understood. Some examples however, suffer due to brevity of explanation. It is often necessary to give very detailed explanations for beginning students and this book sometimes falls short of that. Perhaps the most confusing thing about the entire book is the introduction of operational amplifiers early in the book. The number of new concepts introduced in this course is large enough without adding one that might be better left for an introductory electronics course. The most often heard complaint from students using the text in the classroom was that a large number of exercises and problems refer to previous exercises or problems. Some of these referred to problems themselves referring to earlier problems. This means that the student must be paging back and forth to assemble all the information to work a given problem. It would be far better to repeat a circuit diagram or set of conditions than to have to search through the book so much to get the statement of a problem.

The intrinsic electrical equivalent circuit of a laser diode

The basic electrical equivalent circuit of a laser diode is derived. The effects of spontaneous emission and self-pulsations are included. It is found that self-pulsations are represented by a negative resistance in the model. Application of this model suggests purely electronic methods of suppressing relaxation oscillations in laser diodes.

Book reviews

This text is intended for use in an introductory undergraduate course in electric power engineering. As the author suggests in the preface, a course based on this text is suitable for students from various engineering disciplines, since the only prerequisite material is basic physics and electric circuits. This book is quite different from the author's previous text, Electric Energy Systems Theory: An Introduction, which is suited to an audience of electrical engineering students with backgrounds in state variables and control theory.

A Penetrating Gaze at One Open Phase: Analyzing the Polyphase Induction Motor Dilemma

Portions of the material proposed for a chapter in a new IEEE Standard (#399-the ``Brown Book'') being prepared by the Power System Analysis Subcommittee of the I & CPS Committee are presented. In order to establish a library of approved analytical methods, the material provides a review of the more important basic electrical circuit analysis techniques used for determining the voltage and current relationships which describe various power system network events and operating conditions. Certain simplified circuit arrangements are examined. They illustrate the power and merit of the analytical methods that evolve, as well as the errors that can occur because of improper regard for the restraints that apply. Using the analytical methods, the classical problem of a three-phase induction motor operating with one phase of the supply line open-circuited is studied in considerable detail. Finally, important observations and conclusions are presented regarding the motor protection requirements.

Multimedia based teaching aids for basic electric circuit theory

This paper describes multimeda software developed to increase understanding of basic electric circuit theory concepts. The package is designed to be used by first year students exposed by the first time to this material. Two packages are described here. The first one is called WinCIR! and the second one is called Circuits Tutorial. Both packages require Windows to work and are written in Visual Basic and Hypertext, respectively. Animations, audio, and video are included to better appreciate some of the concepts taught in the course.

A Demonstration Binary Adder

Nowadays, when so much computing is done with the use of the binary scale, it is arguable that some knowledge of binary arithmetic should be part of the mathematical equipment of the normal grammar-school pupil. The basic electric circuits for binary addition are comparatively simple, and a satisfactory machine for demonstrating the principles can be constructed with standard multiple switches and a flash-lamp battery and bulbs. In the U.S.A. the progressive firm of Berkeley Enterprises, Inc., of Newtonville Mass. has popularized “Geniac” kits from which various simple computing devices can be manufactured from interchangeable components. I am indebted to the Geniac Manual for some of the basic circuits I have used, though I have modified them considerably