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Portable generators are used in the home during times of electricity flout, in the field during times of emergencies, and for recreational purposes--anywhere electricity is needed away from the local power grid.
In general, all generator designs vary in the composition of coils (i.e., whether they are made of ferromagnetic materials), the number of coils, the total area or number of turns of each coil, the distance between coils, and the magnetic field strength.
The generator rotor is turned by a device termed a prime mover, often a Diesel engine, steam turbine, water turbine or gas turbine coupled to the rotor shaft.
In 1831-1832 Michael Faraday discovered that a potential difference is generated between the ends of an electrical conductor that moves perpendicular to a magnetic field.
He also built the first electromagnetic generator called the Faraday disc, a type of homopolar generator, using a copper disc rotating between the poles of a horseshoe magnet.
The generator rotor is turned by a device termed a prime mover, often a Diesel engine, steam turbine, water turbine or gas turbine coupled to the rotor shaft.
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