This book is designed to sever a textbook for the students of engineering studying a course on power Electronics. It provides a lucid and comprehensive treatment of the topics covered in the book. A large number of illustrative figures and a wide variety of worked examples add to the clarity of subject mater. This book would be found suitable as a textbook for the students pursuing courses in the areas of the Electrical, Electronics, Instrumentation, Telecommunications and Mechatronics. Contents 1- Introduction 2- Power Semiconductor Diodes and Diode Circuits 3- Diode Rectifiers 4- Power Transistors 5- Thyristors 6- Phase Controlled Rectifiers 7- DC Choppers 8- Inverters 9- AC Voltage Controllers 10- Cycloconverters 11- Some Applications 12- Electric Drives 13- Power Factor Improvement 14- Switching Mode DC-DC Converters 15- Power Supplies 16- Flexible AC Transmission Systems .