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  2. Higashi-Shimizu Frequency Converter - Wikipedia

    en.wikipedia.org/wiki/Higashi-Shimizu_Frequency...

    Location of Higashi-Shimizu and Japan's two utility frequencies Schematic of Higashi-Shimizu Frequency Converter. Higashi-Shimizu Frequency Converter (東清水変電所, Higashi-Shimizu Hendensho) is the third facility in Japan for interconnecting the power grid of eastern Japan, which operates at 50 hertz, and that of western Japan, which operates at 60 hertz.

  3. Cycloconverter - Wikipedia

    en.wikipedia.org/wiki/Cycloconverter

    Topology of blocking mode cycloconverter [1]. A cycloconverter (CCV) or a cycloinverter converts a constant amplitude, constant frequency AC waveform to another AC waveform of a lower frequency by synthesizing the output waveform from segments of the AC supply without an intermediate DC link (Dorf 1993, pp. 2241–2243 and Lander 1993, p. 181).

  4. Frequency changer - Wikipedia

    en.wikipedia.org/wiki/Frequency_changer

    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.

  5. Shin-Shinano Frequency Converter - Wikipedia

    en.wikipedia.org/wiki/Shin-Shinano_Frequency...

    The station houses two converters, one of which opened in December 1977, [1] the other in 1992. The original 1977 converter was one of the first thyristor-based HVDC schemes to be put into operation in the world and used oil-insulated, oil-cooled outdoor thyristor valves supplied by Hitachi (60 Hz end) and Toshiba (50 Hz end).

  6. Frequency conversion - Wikipedia

    en.wikipedia.org/wiki/Frequency_conversion

    Frequency conversion may refer to different processes affecting frequency of physical phenomena: A frequency changer , an electronic device that converts alternating current (AC) of one frequency to alternating current of another frequency

  7. Electric power conversion - Wikipedia

    en.wikipedia.org/wiki/Electric_power_conversion

    Aircraft often use 400 Hz power internally, so 50 Hz or 60 Hz to 400 Hz frequency conversion is needed for use in the ground power unit used to power the airplane while it is on the ground. Conversely, internal 400 Hz internal power may be converted to 50 Hz or 60 Hz for convenience power outlets available to passengers during flight.

  8. Royer oscillator - Wikipedia

    en.wikipedia.org/wiki/Royer_oscillator

    In 1959, just a few years after the Royer oscillator was patented and published, a new oscillator was invented that is commonly referred to as the "Baxandall inverter/converter" since it was patented by Peter James Baxandall, [7] and was initially published by him in a 1959 conference paper which clearly describes its operation. [8]

  9. Pentagrid converter - Wikipedia

    en.wikipedia.org/wiki/Pentagrid_converter

    The pentagrid converter is a type of radio receiving valve (vacuum tube) with five grids used as the frequency mixer stage of a superheterodyne radio receiver. The pentagrid was part of a line of development of valves that were able to take an incoming RF signal and change its frequency to a fixed intermediate frequency , which was then ...