What are the roles of a diode and a capacitor in an AC–DC converter?
To Explain: Roles of a capacitor and a diode in an AC-DC converter.
Explanation of Solution
Introduction:
A diode is a semiconductor device which allows the flow of current in a single direction. A capacitor is a device which stores electrical energy.
A diode is used to convert AC to DC but the output is a pulsed DC.
In order to smooth the pulsed DC, a capacitor can be used. A capacitor charges to peak voltage obtained after rectification and then provides the required current from the stored charge.
Conclusion:
A diode is used to convert AC to DC and a capacitor is used to smooth the pulsed DC.
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