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A power supply is an electrical device that ... was a vacuum tube AC ... for use in other countries. 230 V 50 Hz or 115 60 Hz or even 400 Hz for avionics testing. ...
Stand-alone switched-mode power supply An adjustable switched-mode power supply for laboratory use. A switched-mode power supply (SMPS), also called switching-mode power supply, switch-mode power supply, switched power supply, or simply switcher, is an electronic power supply that incorporates a switching regulator to convert electrical power efficiently.
400 V 50 Hz 230/400 V voltage is defined in "GOST 29322-2014 Mezhgosudarstvennyi Standart Napryazheniya Standartnye". Kenya: G 240 V 415 V 50 Hz Kiribati: I AS/NZS 3112 230 V 400 V 50 Hz Kosovo: C, F [49] 230 V 400 V 50 Hz Kuwait: C, G 240 V 415 V 50 Hz Kyrgyzstan: C, F 220 V 380 V 50 Hz Laos: A, B, C, E, F 230 V 400 V 50 Hz
The waveform of 230 V and 50 Hz compared with 120 V and 60 Hz. The utility frequency, (power) line frequency (American English) or mains frequency (British English) is the nominal frequency of the oscillations of alternating current (AC) in a wide area synchronous grid transmitted from a power station to the end-user.
The first German jet engines built during the Second World War used a mechanical APU starting system designed by the German engineer Norbert Riedel.It consisted of a 10 horsepower (7.5 kW) two-stroke flat engine, which for the Junkers Jumo 004 design was hidden in the engine nose cone, essentially functioning as a pioneering example of an auxiliary power unit for starting a jet engine.
Mains electricity or utility power, grid power, domestic power, and wall power, or, in some parts of Canada, hydro, is a general-purpose alternating-current (AC) electric power supply. It is the form of electrical power that is delivered to homes and businesses through the electrical grid in many parts of the world.
However, to supply the same amount of power, the current would be higher than an equivalent 115 V or 230 V circuit; greater current requires larger conductors or more energy lost as heat. High voltage DC (380 V) is finding use in some data center applications and allows for small power conductors, but is subject to the more complex electrical ...
Often airplanes use 400 Hz power so a 50 Hz or 60 Hz to 400 Hz frequency converter is needed for use in the ground power unit used to power the airplane while it is on the ground. Airlines might also utilize the converters to provide in-air wall current to passengers for use with laptops and the like.
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