Patent ID: 7049708

Claim:
A power source that is powered by a user to charge a load, the power source comprising: a housing; a stator component secured to the housing; a rotor component that rotates relative to the stator component, wherein rotation of the rotor component relative to the stator component results in the generation of electrical energy; a crank assembly that includes a first crank output that is rotated by the user, wherein rotation of the first crank output results in rotation of the rotor component; and a control system that receives the electrical energy and electronically controls the amount of torque required to rotate the rotor component based on at least one of (i) an angular velocity of the first crank output, (ii) an angular position of the crank assembly, (iii) a current in the load, and (iv) a current generated by rotation of the rotor component relative to the stator component.