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  2. Phase converter - Wikipedia

    en.wikipedia.org/wiki/Phase_converter

    An American Rotary Phase Converter with a Transformer. A phase converter is a device that converts electric power provided as single phase to multiple phase or vice versa. The majority of phase converters are used to produce three-phase electric power from a single-phase source, thus allowing the operation of three-phase equipment at a site that only has single-phase electrical service.

  3. Rotary converter - Wikipedia

    en.wikipedia.org/wiki/Rotary_converter

    Wiring schematic for a simplified bipolar field Gramme ring single-phase to direct current rotary converter. (In actual use, the converter is drum-wound and uses a multipolar field.) [2] Wiring schematic for a simplified two-phase to direct current rotary converter, with the second phase connected at right angles to the first. [3]

  4. Rotary phase converter - Wikipedia

    en.wikipedia.org/wiki/Rotary_phase_converter

    The first locomotive with a phase converter (only for demonstration purposes) The Kandó phase converter (1933) The "Kandó" locomotive, the first locomotive using a phase converter system. At the beginning of the 20th century, there were two main principles of electric railway traction current systems: DC system; 16⅔ Hz single phase system

  5. Three-phase electric power - Wikipedia

    en.wikipedia.org/wiki/Three-phase_electric_power

    Three-phase transformer with four-wire output for 208Y/120 volt service: one wire for neutral, others for A, B and C phases. Three-phase electric power (abbreviated 3ϕ [1]) is a common type of alternating current (AC) used in electricity generation, transmission, and distribution. [2]

  6. Electric power conversion - Wikipedia

    en.wikipedia.org/wiki/Electric_power_conversion

    A power converter is an electrical device for converting electrical energy between alternating current (AC) and direct current (DC). It can also change the voltage or frequency of the current. Power Converters can include simpler tools such as transformer or more complex like a resonant converter.

  7. Voltage converter - Wikipedia

    en.wikipedia.org/wiki/Voltage_converter

    Most single phase alternating-current electrical outlets in the world supply power at 210–240 V or at 100–120 V. A transformer or autotransformer can be used; (auto)transformers are inherently reversible, so the same transformer can be used to step the voltage up, or step it down by the same ratio.

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