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Constructed a two-phase motor where the rotor is set in rotation by the combined rotating field produced with two sets of coils. [24] 1887, Helios Co. Based on Coerper's patent, Helios Co. constructed the first 3-phase motor with three slip-rings. The project was dropped in 1890 as they could get satisfactory results using a 2-phase current.
In 2007, Baldor Electric acquired the Dodge and Reliance Electric brands from Rockwell Automation for $1.8 billion. This more than doubled the size of the company, taking it from $800 million in annual revenue to $1.8 billion. In 2011, Baldor was acquired by ABB Ltd of Switzerland in an all-cash deal of US$4.2 billion ($1.1 billion debt ...
Aurelio Ángel Baldor de la Vega (October 22, 1906, Havana, Cuba – April 2, 1978, Miami) was a Cuban mathematician, educator and lawyer. [1] Baldor is the author of a secondary school algebra textbook, titled Álgebra, used throughout the Spanish-speaking world and published for the first time in 1941. He is also the author of the following ...
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An induction motor or asynchronous motor is an AC electric motor in which the electric current in the rotor that produces torque is obtained by electromagnetic induction from the magnetic field of the stator winding. [1] An induction motor therefore needs no electrical connections to the rotor.
The International Electro-Technical Exhibition of 1891, in Frankfurt, Germany, featured the long-distance transmission of high-power, three-phase electric current. It was held between 16 May and 19 October on the disused site of the three former “Westbahnhöfe” (Western Railway Stations) in Frankfurt am Main. The exhibition featured the ...
An electrostatic motor or capacitor motor is a type of electric motor based on the attraction and repulsion of electric charge. An alternative type of electrostatic motor is the spacecraft electrostatic ion drive thruster where forces and motion are created by electrostatically accelerating ions.
Timeline of motor and engine technology (c. 30–70 AD) – Hero of Alexandria describes the first documented steam-powered device, the aeolipile. [1] 13th century – Chinese chronicles wrote about a solid-rocket motor used in warfare. 1698 – Thomas Savery builds a steam-powered water pump for pumping water out of mines. [2]