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Design and construction of a rectifying circuit with a variac for testing

 Department: Electrical Electronics Engineering  
 By: usericon sifypatprojects  

 Project ID: 4463
   Rating:  (3.3) votes: 6
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   Price:₦5000
Abstract
This project work focuses on the construction of a rectifying circuit with a variac for testing. A rectifier is an electrical device that converts alternating current (AC), to direct current (DC), which flows in only one direction. The process is known as rectification since it"straightens" the direction of the current. Physically, rectifiers take a number of forms, including vacuum tube diodes, mercury-arc valves, copper and selenium oxide rectifiers, semiconductor diodes, silicon-controlled rectifiers and other silicon-based semiconductor switches. Rectifiers have many uses but are often found serving as components of DC power supplies and high-voltage direct-current power transmission systems. Rectification may serve in roles other than to generate direct current for use as a source of power. A variac is often used to step up or step down voltages in the 110-115-120 V range and voltages in the 220-230-240 V range - for example, providing 110 V or 120 V (with taps) from 230 V input, allowing equipment designed for 100 or 120 V to be used with a 230 V supply. This allows US electrical equipment to be fed from the higher European voltage. Variac can also be used to supply European 230 V appliances from a 100 or 120 V supply in countries outside Europe. In all cases, the supply and the variac must be correctly rated to supply the required power....
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