A rectifier is electrical component that is used for the conversion of alternating current that after a specific period reverses its direction. The alternating current is allowed to flow only in one direction. The process that is performed by rectifiers is known as rectification and can be performed in a number of different ways. Rectification can be performed with the help of vacuum tube diodes, mercury arc valves and other type of oxide rectifiers. Rectifiers can be used for a number of different applications but the most common use of rectifiers are power supplies of DC, high voltage current flowing, transmission system of energy. It can be used for both applications current generation and current source. It can be used in radio systems, detectors, gas heating, and as a flame detector in many flame prevention devices. A rectifier can be used for a different application and in most of the modern electrical appliances.