What does a power supply rectifier do?

A power supply rectifier is primarily responsible for converting alternating current (AC) into direct current (DC). The AC voltage, which varies in polarity over time, is transformed into pulsating direct current, which flows in one direction. This conversion is crucial because many electronic devices and components require DC for proper operation, and they cannot function directly with AC.

The rectification process typically involves the use of diodes that allow current to pass in one direction while blocking it in the opposite direction. This process does not create a smooth DC output immediately; instead, it produces a pulsating waveform. Additional components, like filters, may be used after rectification to smooth out this pulsating DC into a more stable form.

While regulating voltage levels, transforming voltage levels, and stabilizing current flow are important functions within power supply systems, they pertain to different processes or components and are not the primary role of a rectifier.