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#centre tap

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Rectifiers, Filters and Applications

In a full-wave rectifier with centre-tap transformer, the output frequency for a 50 Hz input is:

**Rectifier** converts AC to DC using diode unilateral conduction, half-wave conducts only during positive half-cycle when forward biased, output pulsating DC with frequency equal to input 50 Hz, full-wave with centre-tap uses two diodes conducting alternate half-cycles, output frequency 100 Hz for 50 Hz input, 120 Hz for 60 Hz input, output voltage closer to peak with capacitor filter. A full-wave rectifier doubles the input frequency by using both half-cycles, so for a 50 Hz input, the output frequency is 50 × 2 = 100 Hz . Substituting values gives 100 Hz, which matches expected behaviour fo

Ref: NCERT > Physics Book > Electronic Devices > Rectifiers, Filters and Applications

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Rectifiers, Filters and Applications

The purpose of a centre-tap transformer in a full-wave rectifier is to:

**Rectifier** converts AC to DC using diode unilateral conduction, half-wave conducts only during positive half-cycle when forward biased, output pulsating DC with frequency equal to input 50 Hz, full-wave with centre-tap uses two diodes conducting alternate half-cycles, output frequency 100 Hz for 50 Hz input, 120 Hz for 60 Hz input, output voltage closer to peak with capacitor filter. The centre-tap transformer splits the secondary voltage into two equal halves, allowing two diodes to rectify alternate half-cycles, producing a full-wave output. Substituting values gives Split the AC input, w

Ref: NCERT > Physics Book > Electronic Devices > Rectifiers, Filters and Applications

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