What is the main function of a rectifier in electrical systems?

The main function of a rectifier in electrical systems is to convert alternating current (AC) into direct current (DC). This process is essential because many electronic devices and applications require a steady and constant voltage supplied by DC, rather than the fluctuating voltage of AC. Rectifiers achieve this conversion by allowing current to flow in one direction only, effectively “rectifying” the AC waveform to produce a more stable output suitable for powering devices and circuits that require DC.

Understanding this role is crucial, especially in scenarios where DC is necessary for proper operation, such as in battery charging, powering electronic components, and in various applications within telecommunications and computing. This function distinguishes rectifiers from other electrical components which might focus on amplifying signals, isolating circuits, or managing load balance.