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Alternating current
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Alternating current is an electric current that periodically reverses direction and changes its magnitude continuously with time, in contrast to direct current, which flows only in one direction. Alte
Three-phase high-voltage electric power transmission lines use alternating currents to distribute power over long distances between electric generatio
Three-phase high-voltage electric power transmission lines use alternating currents to distribute power over long distances between electric generation plants and consumers. The lines in the picture are located in eastern Utah.
The Hungarian ZBD Team (Károly Zipernowsky, Ottó Bláthy, Miksa Déri), inventors of the first high efficiency, closed-core shunt connection transformer
The Hungarian ZBD Team (Károly Zipernowsky, Ottó Bláthy, Miksa Déri), inventors of the first high efficiency, closed-core shunt connection transformer
The prototype of the ZBD transformer on display at the Széchenyi István Memorial Exhibition, Nagycenk in Hungary
The prototype of the ZBD transformer on display at the Széchenyi István Memorial Exhibition, Nagycenk in Hungary
War of the currents
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The war of the currents was a series of events surrounding the introduction of competing electric power transmission systems in the late 1880s and early 1890s. It grew out of two lighting systems deve
Alternating current
…1887 by Thomas Edison (a proponent of direct current), who attempted to discredit alternating current as too dangerous in a public campaign called the "war of the currents". In 1888, alternating current systems gained further viability with the introduction of a functional AC motor, something these systems had lacked up…
American inventor and businessman Thomas Edison established the first investor-owned electric utility in 1882, basing its infrastructure on DC power.
American inventor and businessman Thomas Edison established the first investor-owned electric utility in 1882, basing its infrastructure on DC power.
Westinghouse Electric Company 1888 catalog advertising their "Alternating System".
Westinghouse Electric Company 1888 catalog advertising their "Alternating System".
William Stanley developed the first practical AC transformer for Westinghouse and helped build the first AC systems.
William Stanley developed the first practical AC transformer for Westinghouse and helped build the first AC systems.
The myriad of telephone, telegraph, and power lines over the streets of New York City in a photo of the Great Blizzard of 1888. An AC line that fell d
The myriad of telephone, telegraph, and power lines over the streets of New York City in a photo of the Great Blizzard of 1888. An AC line that fell during the storm led to the electrocution of a boy that spring.