This book is designed keeping in view the syllabi of various states for the course in Industrial Electronics adn control. It is presently the only book that covers the complete course requirement at the diploma lovel Written in a comprehensive adn lucid manner, this book deals with the principle of operation and applications of both teh magnetic control devices as well as the electronic control devices as well as the electronic control devices, using thyristors. Apart from the control systems the book deals with semiconductor physics, applications of thyristor based control devices adn industrial circuits. It also explains electronic control of heating, welding and solid state motor control circuits, these circuits have been verified and tested by experts, in the laboratory.