What does a rectifier do?

A rectifier is an essential component in electrical systems, primarily used to convert alternating current (AC) into direct current (DC). This conversion is crucial in various electronic devices and systems that require a stable and constant voltage for proper operation, such as battery chargers, power supplies, and DC motors.

The process of rectification usually involves the use of diodes, which allow current to flow in one direction while blocking it in the opposite direction. This property enables the rectifier to effectively change the AC waveform, which fluctuates between positive and negative values, into a DC waveform that has a constant polarity. Understanding the operation and application of rectifiers is fundamental in studying basic electricity and electronics, emphasizing their importance in both theoretical and practical scenarios.