The electrical equipment used to convert alternating current (AC) to direct current (DC) is called a rectifier, and the rectifier is mainly divided into half wave rectifier (HWR) and full wave rectifier (FWR), where the full wave rectifier can be divided into center tapped full wave rectifier and bridge full wave rectifier. Among them, bridge rectifier circuits are a common part of electronic power supplies, and many electronic circuits require rectified DC power supplies in order to power various electronic basic components from available AC power supplies. In daily life, such rectifiers can be found in various electronic AC power devices, such as motor controllers, modulation processes, welding applications, etc. In this article, we will introduce what is a rectifier and how it works