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Introduction To The Rectifier Circuit |
Article Submitted by: Daniel Decker
Friday, 19 March 2010
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Introduction A rectifier is an electronic device that converts AC to DC. Rectifiers may be made of solid state diodes, vacuum tube diodes, mercury arc valves, and other components. The process of converting AC to DC is known as rectification. Components of power supplies and as detectors of radio signals are some of the uses of a rectifiers. An ordinary or common type of DC (Direct Current) power supply has a linear circuit which is compose of 3 basic section: Transforming System, The Rectifier System, and Filter System. The First Stage: Transforming System This is where the voltage or current from the power source will be converted (downconvert or stepdown). The Second Stage: Rectifier Circuit A diodes circuit rectifies the the AC signal converting to some form of pulsating Direct Current. The Third Stage: Filter Section Filter Section is also called the Waveform Conditioning. A glitch removal on the (Direct Current) DC power rail. The capacitor serves as a energy reservoir. Rectifier Circuit Information A rectifier is an electrical device made of one or more semiconductive elements such as Germanium, Silicon, Gas, Gallium Arsenide , AlGaAs, HgCdTe, InP, InGaAsP, and InGaAlP. In earlier time progression of solid state rectifiers, vacuum tubes (also called thermionic valve and electron tubes ) diodes and copper oxide or selenium rectifier stack were avail, but vacuum tube where replace in the needs of portability, efficiency and effectivity, because vacuum tubes requires lot of resources. Requires Large temperature (pre- heated before it function to his optimum performance) sockets must allow for thermal expansion, to prevent stress in the glass at the pins. Requires High amount of voltage Relatively Slow Big and bulky The Rectifier can be classified it two categories Half Wave Rectifier Circuit In a half wave rectification, either the positive o negative part of the sinusoidal wave form is to be transferred or conveyed. During the positive condition of the half duty cycle of the sinusoidal wave, when the diode is in forward bias position, the diode is at On state, or the gate is open, only the positive arc will pass the diode, during the negative condition of the half duty cycle of the sinusoidal wave, when the diode is in forward bias position , the diode is at off state, or the gate is open, no negative arc will pass the diode, turning a voltages into unidirectional pulsating voltages, Full Wave Rectifier Circuit Full wave also know as Bridge Rectifier, for both Positive and negative swing or half duty cycle of the current there is a forward path through the Diode bridge. At the same time that one set of diodes is forward biased, the other set is reverse biased, In a bridge type rectifier circuit two diodes are At this point is in used,full wave circuit is compose of two half wave rectifier circuit Joined or fastened together to a single load. Current flow Explain During the positive half duty cycle D2 and D3is on state, both D2 and D3 are in forward bias, D2 and D3 gates are open, D2 passing the positive arc duty cycle, while D3 is passing the negative arc duty cycle, During in this state D1 and D4 are at reverse bias and at off state. During the negative half duty cycle D1 and D4 is on state, both D1 and D4 are in forward bias, D1 and D4 gates are open, D1 passing the negative arc duty cycle, while D4 is passing the positive arc duty cycle, During in this state D2 and D4 are at reverse bias and at off state. In this practice and execution the diode is keep switching every one whole complete cycle. Article Source: http://www.ArticleBlast.com |
About The Author:
I'm Daniel Decker and I work for http://www.dcacpower.com as an Article Writer. Please visit our site for your Power Inverter needs.
I'm Daniel Decker and I work for http://www.dcacpower.com as an Article Writer. Please visit our site for your Power Inverter needs.
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