This full-color guide provides a clear introduction to DC/AC circuits with numerous exercises and examples, an abundance of illustrations, photographs, tables and charts, and a strong emphasis on troubleshooting. Uses a conventional-flow approach throughout, and incorporates mathematical concepts only when needed to understand the discussion. Covers everything from components, quantities and units to voltage, current and resistance; series circuits; magnetism and electromagnetism; phasors and complex numbers; capacitors; inductors; RC and RL circuits; circuit theorems, and more. Considers reactive circuits by circuit type as well as by component type . Integrates many TECH Tips (Technology Theory Into Practice) and PSpice Computer Analysis sections that apply theory learned to a practical activity using realistic circuit board and instrument graphics. Weaves worked examples and related exercises throughout to clarify basic concepts and illustrate procedures and troubleshooting techniques. Contains over 1,300 full-color illustrations, and over 750 problem sets and 850 self-test and review questions. For electronic technology professionals or anyone who wants a fundamental understanding of the principles of electric circuits.