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The dc level obtained from a sinusoidal input can be improved to cent
percent using a process called full wave rectification. The most commonly used
circuit for performing this function is the bridge circuit with four diodes. The circuit
diagram of the Bridge rectifier and the input waveform is given below.













The input waveform is given as,





























The diodes D2 and D3 conduct while D1 and D4 are in “off” state.
The configuration showing the current and polarity across the resistor R
during the first half cycle (or positive region of the input) is shown below.
















The input and output waveform during the above cycle is shown below.
























































The voltage level Vdc for full wave rectifier is twice as much as that for a half
wave rectifier.

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  1. UnknownApril 13, 2011 at 8:37 AM

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