For conventional flow courses in DC/AC Circuits in two- or four-year technology and engineering programs. THE most widely acclaimed text in the field for more than three decades, Introductory Circuit Analysis provides introductory-level students with the most thorough, understandable presentation of circuit analysis available. Exceptionally clear explanations and descriptions, step-by-step examples, practical applications, and comprehensive coverage of essentials provide students with a solid, accessible foundation.

As I wrote the preface for this tenth edition ofIntroductory Circuit Analysis,it was impossible not to reflect over the past 34 years of its history. There were times when it was particularly difficult to be sure which subjects were outdated, whether a new topic should be added, whether a presentation was at the correct level or too mathematically complex, whether the computer coverage should be expanded, and so on. Fortunately, however, students' questions in class and in laboratory sessions, combined with comments from peers and reviewers, helped define the areas to be reworked and the subjects to 'be, added. Nonetheless, in my desire to please everyone, the book grew in size to the point where I seriously considered dropping sections and even whole chapters. However, the reaction to such a change was so negative that it seemed that the best alternative was simply to accept the fact that any new material could be considered only if a similar amount of content was deleted. It is always interesting that as I sit down to write the preface for one edition, I am already aware of changes that will appear in the next edition. For example, in the area of computers for this edition, I felt a strong need to maintain the detailed descriptions that appear with the applications of PSpice, Mathcad, and Electronics Workbench. However, the quality of the supporting literature has improved significantly in recent years, leading me to believe that most of the detail will be dropped from the eleventh edition, with possibly only the output files or printouts provided. One of the most enjoyable challenges for me with each new edition is to come up with something innovative that will support the learning process. In the ninth edition it was the addition of numerous practical examples, and in the eighth edition it was the detail to support the Windows version of PSpice. Going back to the fifth edition (1987), I can recall debating whether to introduce computer analysis to the text with the addition of BASIC programs. Obviously, it was the right move when we consider the coverage that such analysis receives in most texts today. In another edition it was the expansion of the early chapter on mathematical operations, as I found that many students lacked the proper background for the work to follow. Revision is a continuing process that provides a wonderful challenge for future editions. The most obvious changes for this edition are in the computer area. I was pleased with OrCAD's family release of the 9.2 Lite Edition, allowing me to move on from Version 8. I can recall when I finally became confident in the use of the DOS version of PSpice, and then the Windows version was introduced. I realized that although I had developed my skills in the DOS mode, I had to learn this new approach. At first I was reluctant and took pains to point out everything I didn't like about the Windows version. However, with exposure and time, I recognized that it was obviously the way of the future; and now, of course, I welcome the change. The same was true to some extent when I became familiar with Version 8 of PSpice and then Version 9 (under new ownership) was introduced with a number of changes. There was a period where I simply stayed with Version 8 rather than make the change. However, Cadence Design Systems has made a significant effort to soften the changes and bring back its close association with the MicroSim version. The time has come to move on to the new version. Most of the changes are in the front end and in some of the simulation sequences. Be assured, however, that if you are familiar with Version 8 and you take a few minutes to review the introductory material in this text, the new version will soon be as user-friendly as the old. In fact, you will probably appreciate some of the changes that were made. For this edition the Multisim 2001 version of Electronics Workbench was added in response to its expanded use by a number of