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An engine-generator is the combination of an electrical generator and an engine (prime mover) mounted together to form a single piece of self-contained equipment. The engines used are usually piston engines, but gas turbines can also be used, and there are even hybrid diesel-gas units, called dual-fuel units.
Electrostatic machines are typically used in science classrooms to safely demonstrate electrical forces and high voltage phenomena. The elevated potential differences achieved have been also used for a variety of practical applications, such as operating X-ray tubes, particle accelerators, spectroscopy, medical applications, sterilization of food, and nuclear physics experiments.
A rounded terminal minimizes the electric field around it, allowing greater potentials to be achieved without ionization of the air, or other dielectric gas, surrounding it. Since a Van de Graaff generator can supply the same small current at almost any level of electrical potential, it is an example of a nearly ideal current source.
"Dynamo Electric Machine" (end view, partly section, U.S. patent 284,110) A dynamo is an electrical generator that creates direct current using a commutator.Dynamos were the first electrical generators capable of delivering power for industry, and the foundation upon which many other later electric-power conversion devices were based, including the electric motor, the alternating-current ...
Woolrich Generator, the earliest electrical generator used in an industrial process. [3] 1845: German physicist Gustav Kirchhoff developed the two laws now known as Kirchhoff's Circuit laws. 1850: Belgian engineer Floris Nollet invented (and patented) a practical AC generator. 1851: Heinrich Daniel Ruhmkorff developed the first coil, which he ...
The term "electric fluid" was based on the idea that a jar could be filled and refilled when it became empty. [3] That led to the revolutionary idea of "electrical fire" as a type of motion or current flow rather than a type of explosion. [36] Several 18th-century electric terms were derived from his name.
Perpetual Motion: Comprising a History of the Efforts to Attain Self-Motive Mechanism with a Classified, Illustrated Collection and Explanation of the Devices Whereby it Has Been Sought and Why They Failed, and Comprising Also a Revision and Re-Arrangement of the Information Afforded by "Search for Self -Motive Power During The 17th, 18th and ...
The apparatus is variously called the Kelvin hydroelectric generator, the Kelvin electrostatic generator, or Lord Kelvin's thunderstorm. The device uses falling water to generate voltage differences by electrostatic induction occurring between interconnected, oppositely charged systems.