Full Wave Rectifier

A full-wave rectifier converts both halves of an alternating current (AC) input waveform into a pulsating direct current (DC) output.

• Functional Identity: It acts as a power-conversion circuit that uses the complete AC cycle rather than wasting the negative half-cycle.
• Mechanism of Action:
  • Center-Tapped Full-Wave Rectifier: Uses a center-tapped transformer and two diodes. Each diode conducts on alternating half-cycles, steering current through the load in the same direction.
  • Bridge Rectifier: Uses four diodes arranged in a bridge configuration and does not require a center-tapped transformer.

• Practical Utility: It provides a higher efficiency, doubles the output ripple frequency, and produces a smoother DC signal that is easier to filter for electronic devices than a half-wave rectifier.