This course describes the principle of power electronics, its switching nature, the characteristics of different switching devices such as power diode, bipolar junction transistor, and thyristor. It also contains the basic types of converter topologies such as ac-dc rectifiers, dc-dc choppers, dc-ac inverters, and ac-ac voltage controllers. The study of these converters includes; circuit topology, circuit waveforms, principle of operation, performance parameters, methods of control, and applications.