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field weakening

См. также в других словарях:

  • Magnetic field — This article is about a scientific description of the magnetic influence of an electric current or magnetic material. For the physics of magnetic materials, see magnetism. For information about objects that create magnetic fields, see magnet. For …   Wikipedia

  • geomagnetic field — Magnetic field associated with the Earth. It is essentially dipolar (i.e., it has two poles, the northern and southern magnetic poles) on the Earth s surface. Away from the surface, the field becomes distorted. Most geomagnetists explain the… …   Universalium

  • Brushed DC electric motor — A brushed DC motor is an internally commutated electric motor designed to be run from a direct current power source. Contents 1 Simple two pole DC motor 2 The commutating plane 2.1 Compensation for stator field distortion …   Wikipedia

  • Electric motor — For other kinds of motors, see motor (disambiguation). For a railroad electric engine, see electric locomotive. Various electric motors. A 9 volt PP3 transistor battery is in the center foreground for size comparison. An electric motor converts… …   Wikipedia

  • British Rail Class 25 — Infobox Locomotive name = British Rail Class 25 powertype = Diesel electric caption = Class 25 locomotive stands on Springs Branch Traction Maintenance Depot at Wigan roadnumber = D5151–D5299, D7500–D7677; later 25001–25327 totalproduction = 327… …   Wikipedia

  • FS Class E636 — Infobox Locomotive name = FS class E636 powertype = Electric electricsystem = 3,000 V DC tractionmotors = DC series caption = E636 002 in its original livery, property of FerAlp Team museum in Bussoleno builddate = 1940 ndash;1962 builder = Breda …   Wikipedia

  • FS Class E656 — Infobox Locomotive name=FS class E656 electricsystem=3,000 V DC tractionmotors=DC powertype=Electric caption=Unit E656.476 in XMPR livery. builddate=1975 1989 builder=Officine Casaralta, Officine Reggiane, SOFER, TIBBcomponentistica Ercole… …   Wikipedia

  • Variable-frequency drive — A variable frequency drive (VFD) is a system for controlling the rotational speed of an alternating current (AC) electric motor by controlling the frequency of the electrical power supplied to the motor.cite book | first=Sylvester J. |… …   Wikipedia

  • ER200 — The ER200 was a Russian electric train built in Riga by Rīgas Vagonbūves Rūpnīca. It was the first high speed Direct Current intercity Electric Multiple Unit (EMU) with rheostatic brake.There were two designs. First in 1974 came the ER200 1 EMU… …   Wikipedia

  • FS Class E646 — Infobox Locomotive caption= Unit E646.094 in XMPR livery name=FS class E646 powertype=Electric electricsystem=3,000 V DC collectionmethod = Pantograph tractionmotors=DC builddate=1958 1967 builder=TIBB weight=110 tons uicclass=Bo Bo Bo… …   Wikipedia

  • FS Class D345 — Class D345 D345 locomotive in the original livery. Power type Diesel Builder FIAT Grandi Motori, Breda, SOFER Build date 1 …   Wikipedia

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