| 摘要 |
A portable power source ( 10 ) includes a housing ( 12 ), a stator component ( 20 ), a rotor component ( 18 ), a crank assembly ( 14 ), and a control system ( 24 ). The stator component ( 20 ) is secured to the housing ( 12 ), the rotor component ( 18 ) rotates relative to the stator component ( 20 ) and the crank assembly ( 14 ) is coupled to the rotor component ( 18 ). The crank assembly ( 14 ) is rotated by the user relative to the housing ( 12 ). As provided herein, rotation of the crank assembly ( 14 ) by the user results in rotation of the rotor component ( 18 ) relative to the stator component ( 20 ). In one embodiment, the control system ( 24 ) controls the amount of torque required to rotate the crank assembly ( 14 ). For example, the amount of torque required to rotate the crank assembly ( 14 ) is varied according to the rotational position of the crank assembly ( 14 ).
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