상황
A hand crank dynamo generates low-voltage AC, which is rectified by a bridge and stored in a capacitor; a manual switch connects the energy to an LED through a current-limiting resistor.
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01
Use a bridge rectifier to convert the dynamo's AC output to DC
02
Add a bulk capacitor to smooth and store the rectified energy
03
Insert a series resistor to limit LED current and a switch for manual control
Use for portable, manually charged LED lights or any low-power hand-crank generator supply needing rectification and current limiting.