A capacitor connected across the output of a rectifier acts as
Correct answer: B. a smoothing element, charging at the peaks and discharging between them to reduce ripple
- A. an amplifier
- B. a smoothing element, charging at the peaks and discharging between them to reduce ripple
- C. a switch
- D. an oscillator
Explanation
The capacitor stores charge while the rectified voltage rises and releases it while the voltage falls, filling in the troughs so the output approaches a steady direct voltage. A larger capacitance or a larger load resistance gives less ripple, since the time constant is longer. Full wave rectification smooths better than half wave because the gaps to be filled are shorter.
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About Rectification
Rectification converts alternating current into unidirectional current using semiconductor diodes. The content includes half wave and full wave rectifiers, bridge circuits, output waveforms, ripple and smoothing with capacitors, with the difference between rectification and voltage regulation kept clear.
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