Pedal powered system can be used to recharge your cell phones, laptops or to power your camping outside. This is just a start but in future if it gets implemented in local exercise parlor and in every bicycle in a optimized way , it can produce electricity on large scale. Moreover , this method used successfully in recent wall street demonstration.Things to know :
Alternator : An alternator is an electromechanical device that converts mechanical energy to electrical energy in the form of alternating current.
Alternators generate electricity using the same principle as DC generators, namely, when the magnetic field around a conductor changes, a current is induced in the conductor. Typically, a rotating magnet, called the rotor turns within a stationary set of conductors wound in coils on an iron core, called the stator. The field cuts across the conductors, generating an induced EMF (electromotive force), as the mechanical input causes the rotor to turn.
Inverter : An inverter is an electrical device that converts direct current (DC) to alternating current.
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With the help of an alternator, mountain bike and an inverter, we can run a human-powered 220 Watt food processor as shown below :
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