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How does a cell phone charger produce a voltage of 5.0 V form the line voltage of 230 V?

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Question

How does a cell phone charger produce a voltage of 5.0 V form the line voltage of 230 V?

Very Short Answer
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Solution

The charger steps down the mains voltage, rectifies the resulting AC into pulsating DC, and filters it to reduce ripple. A voltage regulator then provides the required steady 5.0 V DC output.

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Chapter 16: Semiconductor Devices - Intext Question [Page 350]

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Balbharati Physics [English] Standard 12 Maharashtra State Board
Chapter 16 Semiconductor Devices
Intext Question | Q 1. | Page 350
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