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