This book is designed to serve as a textbook for students of engineering studying a course on Power Electronics. It provides a lucid and comprehensive treatment of the topics covered in the book. Characteristics of power diodes, power transistors, thyristors and other related topics, giving an up-to-date account, have been discussed first Then each chapter begins at an introductory level and is so developed progressively that an average student can comprehend the subject matter easily. Topics covered in this volume include diodes circuits and rectifiers, phase controlled rectifiers, choppers, inverters etc. A large number of illustrative figures and a wide variety of worked examples add to the clarity of subject matter presented in the book. A sufficient number of unsolved problems with answers, conceptual questions and hints to the relatively difficult ones are given at the end of each chapter to test student's knowledge regarding the topics covered. The book will serve the students as a textbook during their academic career and as a reference text during their professional career. This book would be found suitable as a textbook for students pursuing courses in the areas of Electrical, Electronics, Instrumentation, Telecommunications and Mechatronics.