In a full-wave rectifier using a centre-tapped transformer, the number of diodes required is
Aone
BtwoCORRECT
Cthree
Dfour
GCEPhysicsElectronics2024
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Why the answer is B, and why the others tempt you.
A full-wave rectifier using a centre-tapped transformer requires exactly two diodes. Each diode conducts on alternate half-cycles of the AC input, producing a pulsating DC output. A bridge rectifier (without a centre tap) uses four diodes.
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