Preface We know what we are, but know not what we may be. -WILLIAM SHAKESPEARE, HAMLET (1600) OrCAD PSpice for Windows, Volume I is the first in a three-volume series on PSpice circuit simulation and covers DC/AC theory and applications, (Volume II coversDevices, Circuits, and Operational Amplifiersand Volume III coversDigital and Data Communications). The material is based on OrCAD Lite 9.2, the latest free evaluation version of the most popular simulation software on the market today: OrCAD Corporation's PSpice. It is introductory in nature and is appropriate for those with little or no experience in circuit simulation. The level of difficulty is tailored to the technology student, but it offers enough "gentle" material for the technician and enough challenging material for the engineer. It covers both PSpice techniques and DC/AC theory and applications, and the choice and sequence of material closely follows that of a conventional theory text on DC/AC principles. Since most activities can be done by either PSpice simulation or hands-on construction, it is designed to replace a conventional DC/AC laboratory manual. Why PSpice? As a dedicated student or educator, you may strongly believe that circuit simulation must be a part of your classroom experience before applying your knowledge and skills on the job. Would it not be reasonable to seek out the most popular circuit simulation software on the market today? Would it not be highly beneficial to use the identical software package that is used by engineers and technicians on the job--complete with professional-level advanced techniques and restricted only by circuit size? Would it not also be sensible to reduce your costs to zero, and to distribute the free software without regard for licenses or copyright restrictions? The solution, then, is PSpice. Each chapter follows a deliberate step-by-step approach, with new material building on old and each activity supported with numerous circuits, tables, and graphs. Each chapter starts with a briefDiscussionsection that is designed to supplement and reinforce a theory text. ASimulation Practicesection follows with one or more specific experimental activities that can be performed using either PSpice circuit simulation or hands-on with conventional parts and instruments. Scattered throughout the text are a number ofSimulation Notes,designed to clarify, summarize, and reinforce the more vital PSpice techniques. Should you forget a previously learned PSpice technique, simply locate the corresponding simulation note (with the help of Appendix A) and review the process. Having copies of various simulation notes in front of you during circuit analysis might also prove to be helpful. OrCAD's Total Solution For designing electronic circuits, OrCAD offers a total solution package, including schematic entry, FPGA synthesis, digital, analog, mixed-signal simulation, and printed circuit board layout--everything from start to finish. All software components are fully integrated and are designed to follow an engineer's natural design flow. From this complete and comprehensive package, this text is based exclusively on just one aspect: PSpice A/D. PSpice A/D simulates nearly any mix of analog and digital circuits and conveniently displays the results in graphical form--exactly what we need to support most curricula typically found in technology and engineering programs. It is powerful, easy to learn, and simple to use. Quite simply, OrCAD's PSpice A/D is one of the best learning tools to come along in many years. OrCAD Lite Fortunately, for those of us in education, OrCAD Corporation has made PSpice evaluation software available at no cost. All the activities in this book are based on OrCAD Lite version 9.2. Its only major limitaGoody, Roy W. is the author of 'Orcad Pspice for Windows Dc and Ac Circuits', published 2000 under ISBN 9780130157966 and ISBN 0130157961.