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In the years 1831-1832, Michael Faraday discovered that electric currents are produced when an electric conductor - a medium capable of conducting electric currents, is passed perpendicularly through it. Now, while it may not sound very exciting, it is actually the next best thing discovered only to electricity. That was the time the basic foundation was laid for the ubiquitously important Electric Conductor, in form of something called as the faraday disc. This was a first generation homopolar generator and it used to produce a small DC voltage and large amounts of current. Thus miniature solutions and methodologies have been developed to replicate the very essential work of producing electricity. Not just by erudite scientists and engineers, but made possible for the common man who cannot understand an electron or even a generator weighing one ton. However, the Dynamo was the first electric generator, entrusted with the enormous task of producing electricity for the industry at large and uses electromagnetic pulses generated by a rotating mechanical device which develop into alternating electric currents. A French instrument specialist, Hippolyte Pixii, had built the first working dynamo model. Threads of iron were formed into a coil through which a spinning magnet positioned such that it's north and south poles alternate and produced alternating currents which were later changed into direct currents by using a commutator. A generator, as you must have known well enough by now, does produce an electric current but not an electric charge which is already present in the conductor, something akin to a water pump, which creates the flow of water but does not create water itself. Other forms of generators also exist and operate on other scientific concepts like piezoelectricity and magneto hydrodynamics. You will even come across different generators tending to cater to various purposes ranging from small portable generators to mammoth sized marines ones. You would then again, see classes of generators like turbine-generators, engine-generators and the like, which utilize different inputs for their running According to the maximum power theorem, it is understood that commercial generators are not made to produce maximum power, but then, they are designed at low-output and high-efficiency mode, made to come about by restricting the amount of heat lost due to the mechanical functioning. With the advent of the industrial revolution in Europe and the Americas, the sheer variety of generators and the undeterminable number of the same used in the industry, can only reflect the growing criticality of its use. It has, of late, has become an indispensable tool which most industries cannot do without.
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