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A rectifier is an electrical device composed of one or more diodes that converts alternating current (AC) to direct current (DC). A diode is like a one-way valve that allows an electrical current to flow in only one direction. This process is called rectification.
A rectifier can take the shape of several different physical forms such as solid-state diodes, vacuum tube diodes, mercury arc valves, silicon-controlled rectifiers and various other silicon-based semiconductor switches.
Rectifiers are used in various devices, including:
A rectifier is an electrical device that converts AC to DC. AC regularly reverses direction, while DC flows in one direction only.
Rectification produces a type of DC that encompasses active voltages and currents, which are then adjusted into a type of constant voltage DC, although this varies depending on the current's end use. The current is allowed to flow uninterrupted in one direction, and no current is allowed to flow in the opposite direction.
Almost all rectifiers contain more than one diode in particular arrangements. A rectifier also has different waveforms, such as:
One of the key problems with rectifiers is that AC power has peaks and lows, which may not produce a constant DC voltage. Usually a smoothing circuit or filter needs to be coupled with the power rectifier to produce a smooth DC current.