Concept:A center-tapped full-wave rectifier uses a center-tapped transformer winding to provide two antiphase AC voltages, requiring only two diodes to achieve full-wave rectification.
Formula:$$\text{Diode Count (Center-Tapped Full-Wave Rectifier)} = 2$$
Solution:- The center tap serves as the common reference ground for the circuit.
- Diode \( D_1 \) conducts during the positive half-cycle when the upper winding is positive.
- Diode \( D_2 \) conducts during the negative half-cycle when the lower winding becomes positive relative to the center tap.
- Thus, exactly 2 diodes are required.
Why other options are incorrect:- Option A: 1 diode produces half-wave rectification.
- Option B: 4 diodes are used in a bridge rectifier circuit.
- Option D: 3 diodes do not form a standard single-phase rectifier topology.
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