File Name: difference between half wave and full wave rectifier .zip
The process of converting the AC current into DC current is referred to as rectification. Rectification can be achieved by using a single diode or group of diodes. These diodes which convert the AC current into DC current are referred to as rectifiers.
It is within the power rectification arena that the bridge rectifier is the most common form of rectifier. The full wave rectifier is more complicated than the half wave version, but the full wave rectifier offers some significant advantages, and as a result it is almost exclusively used in this area. The concept of the full wave rectifier is that it utilises both halves of the waveform to provide an output and this greatly improves its efficiency. A further advantage when used in a power supply is that the resulting output is much easier to smooth. When using a smoothing capacitor, the time between the peaks is much greater for a half wave rectifier than for a full wave rectifier. It can be seen from the circuit diagram, that the fundamental frequency within the rectified waveform is twice that of the source waveform - there are twice as many peaks in the rectified waveform.
Electronic components called diodes form the heart of rectifier circuits, as they pass current in only one direction. There are two types of full-wave rectifiers — the center-tapped full-wave rectifier, which requires a center-tapped transformer, and the bridge rectifier, which does not need a … By the same token, a full-controlled rectifier uses SCR's for all control elements; 4 in a single phase bridge, 6 in a three phase bridge. The output waveform and circuit diagram is shown below. Other important roles include surge protection and battery charging. Both full-wave and bridge rectifiers may be constructed from circuit diagrams. Its value is 0.
In Half Wave Rectifier , when the AC supply is applied at the input, a positive half cycle appears across the load, whereas the negative half cycle is suppressed. This can be done by using the semiconductor PN junction diode. The diode allows the current to flow only in one direction. Thus, converts the AC voltage into DC voltage. In half-wave rectification, only one crystal diode is used.
We know that a diode allows electric current in one direction and blocks electric current in another direction. We are using this principle to construct various types of rectifiers. Rectifiers are classified into different types based on the number of diodes used in the circuit or arrangement of diodes in the circuit.
A rectifier is an electrical device that converts alternating current AC , which periodically reverses direction, to direct current DC , which flows in only one direction. The reverse operation is performed by the inverter. The process is known as rectification , since it "straightens" the direction of current. Physically, rectifiers take a number of forms, including vacuum tube diodes , wet chemical cells, mercury-arc valves , stacks of copper and selenium oxide plates, semiconductor diodes , silicon-controlled rectifiers and other silicon-based semiconductor switches. Historically, even synchronous electromechanical switches and motors have been used.
Half Wave and Full Wave Rectifiers are the two categories of rectifier circuits. The crucial difference between Half Wave and Full Wave Rectifier is that a half wave rectifier converts only one-half cycle of the ac input supplied into pulsating dc signal. As against a full wave, rectifier converts both halves of the applied input signal into pulsating dc. Another major difference between the two is that the rectification efficiency of half wave rectifier is somewhat less as compared to the full wave rectifier.
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