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REFull-wave rectifiers are commonly used in power supplies to convert AC to DC, providing the steady DC voltage needed for electronic devices. There are two main types of full-wave rectifiers: Center-Tapped Full-Wave Rectifier and Bridge Rectifier.
A Bridge Rectifier uses four diodes in a bridge configuration to convert both the positive and negative halves of the AC input into DC.
▶️ During the positive half-cycle of the AC waveform, diodes D1 and D2 are forward-biased, allowing current to flow through the load in the direction indicated. Diodes D3 and D4 are reverse-biased during this half-cycle and do not conduct.
▶️ During the negative half-cycle of the AC waveform, diodes D3 and D4 become forward-biased, allowing current to flow through the load in the same direction as during the positive half-cycle. Diodes D1 and D2 are reverse-biased in this cycle, preventing current from flowing through them.
This consistent direction of current through the load results in a continuous DC output, as seen in the rectified waveform.
In practical applications, a smoothing capacitor is often added to the output of the rectifier to smooth out the ripples in the DC output, providing a more steady and smooth DC voltage. However, this capacitor is not shown here, as the focus is on the basic operation of the bridge rectifier itself.
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