This book is geared to the practical needs of engineers, technicians, and hobbyists involved in the design, testing, and implementation of regulated power supplies. Irving M. Gottlieb has completely revised and updated this fourth edition to include step-by-step guidance for building the latest types of regulated power supplies. Gottlieb provides full coverage of standard power supply sources now found in a majority of applications. He also describes how new high frequency devices such as the insulated-gate bipolar transistor (IGBT), the mos-controlled thyristor (MCT), and current- and resonant-mode regulators have reduced production costs and improved power supply efficiency and reliability.