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  2. List of free PC games - Wikipedia

    en.wikipedia.org/wiki/List_of_free_PC_games

    The following is a list of PC games that have been deemed monetarily free by their creator or copyright holder. This includes free-to-play games, even if they include monetized micro transactions. List

  3. Frequency changer - Wikipedia

    en.wikipedia.org/wiki/Frequency_changer

    Download as PDF; Printable version; ... 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 ...

  4. 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.

  5. 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

  6. 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).

  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. Crystal oscillator frequencies - Wikipedia

    en.wikipedia.org/wiki/Crystal_oscillator_frequencies

    Allows binary division to 100 Hz (32,768×100 Hz, or 2 15 ×100 Hz) and to 50 Hz, used in e.g. wattmeters and DC-AC converters 3.560 Amateur Radio: A common QRP frequency (80-meter band), also called 3560 kHz. Other less common crystals for the same band are 3.535, 3.550 (SKKC), 3.579 (digital modes) MHz. See also 7.025 MHz. 3.575611 PAL

  9. Rotary converter - Wikipedia

    en.wikipedia.org/wiki/Rotary_converter

    1909 500 kW Westinghouse rotary converter. A rotary converter is a type of electrical machine which acts as a mechanical rectifier, inverter or frequency converter.. Rotary converters were used to convert alternating current (AC) to direct current (DC), or DC to AC power, before the advent of chemical or solid state power rectification and inverting.