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Hand Dynamo: it is mainly used in rechargeable electric torch, handy charger, rechargeable radio and so on.
The handle crank drive the gear, make the dynamo's speed at 3000 rpm, and produce the output current, output voltage, and output power.
The specification is following:
1. Speed: 1000-3000 rpm
2. Output voltage: 2-10 V
3. Output current: 0.2-2 A
4. Output power: 0.5-6 W
5. Size: Diameter 45mm, Thickness: 12mm(without gear) , 18.5mm(with small gear) , 23.5mm(with big gear)
We also could produce the hand dynamo according your require.