Rectifiers

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 Rectification is the process of converting alternating current (AC) into direct current (DC). A rectifier is an electrical device that performs this conversion by allowing current to flow in one direction only. The process of rectification is made possible by diodes, which act as one-way valves within the rectifier. 

Here are some things to know about rectifiers:
  • How they work
    Diodes are electrical components that have different resistances on either side. In a forward bias, a p-n junction diode allows current to pass, but in a reverse bias, it blocks the current. 
  • Types of rectifiers
    There are two main types of rectifiers: half-wave and full-wave. A half-wave rectifier only converts half of an AC cycle, resulting in a pulsating DC output. A full-wave rectifier uses both halves of the AC cycle, resulting in a more efficient DC conversion. 
  • Uses
    Rectifiers are commonly used in DC power supplies and high-voltage direct current transmission systems. They can also be used for modulation, such as demodulating the amplitude of a modulated signal in a radio signal. 
  • Efficiency
    The efficiency of a rectifier is the ratio of the DC output power to the AC input power. The maximum efficiency of a bridge rectifier is 81.2%. 

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