The study of power electronics is an exciting and a challenging experience. The scope for applying power electronics is growing at a fast pace. New devices keep coming into the market, sustaining development work in power electronics. The presentation material was very informational. This text will be a great ‘quick source’ for basic power electronics devices information. Content cover mainly power devices introduction and end with working circuit model with desired output waveforms which help students to understand working principle of devices and guide for implementation of device practical and observed characteristics for same. The material will complement and support the theory taught in the lectures, and should help the student to apply his knowledge of electronics.