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  2. Utility frequency - Wikipedia

    en.wikipedia.org/wiki/Utility_frequency

    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.

  3. Mains electricity by country - Wikipedia

    en.wikipedia.org/wiki/Mains_electricity_by_country

    NEMA 1-15P NEMA 5-15P 110 V 190 V 60 Hz Uruguay: C, F, I, L 230 V 380 V 50 Hz Type I was the main standard until the 1990s, and still appears in old installations. Uzbekistan: C, E, F 220 V 380 V 50 Hz Vanuatu: C, G, I AS/NZS 3112 230 V 400 V 50 Hz Venezuela: A, B 120 V 208 V 240 V 115/220 V 220/440 V 230/460 V [73] 60 Hz Vietnam

  4. Mains hum - Wikipedia

    en.wikipedia.org/wiki/Mains_hum

    Mains hum, electric hum, cycle hum, or power line hum is a sound associated with alternating current which is twice the frequency of the mains electricity.The fundamental frequency of this sound is usually double that of fundamental 50/60 Hz, i.e., 100/120 Hz, depending on the local power-line frequency.

  5. Electricity sector in Japan - Wikipedia

    en.wikipedia.org/wiki/Electricity_sector_in_Japan

    The electric power industry in Japan covers the generation, transmission, distribution, and sale of electric energy in Japan. Japan consumed approximately 918 terawatt-hours (TWh) of electricity in 2014. [1] Before the 2011 Fukushima Daiichi nuclear disaster, about a quarter of electricity in the country was generated by nuclear power. In the ...

  6. Wide area synchronous grid - Wikipedia

    en.wikipedia.org/wiki/Wide_area_synchronous_grid

    For timekeeping purposes, over the course of a day the operating frequency will be varied so as to balance out deviations and to prevent line-operated clocks from gaining or losing significant time by ensuring there are 4.32 million on 50 Hz, and 5.184 million cycles on 60 Hz systems each day. This can, rarely, lead to problems.

  7. College Football Playoff Round 1 Overreaction: home field ...

    www.aol.com/sports/college-football-playoff...

    🖥️ Watch this full episode on YouTube Check out all the episodes of the College Football Enquirer and the rest of the Yahoo Sports podcast family at https://apple.co/3zEuTQj or at Yahoo ...

  8. Trump says he gave permission to Elon Musk to trash GOP ... - AOL

    www.aol.com/trump-says-gave-permission-elon...

    President-elect Donald Trump, after rejecting House Speaker Mike Johnson's plan to avoid a government shutdown, worked the phones on Thursday, showing wavering confidence in Johnson and claiming ...

  9. Voltage converter - Wikipedia

    en.wikipedia.org/wiki/Voltage_converter

    A simple voltage dropper can be used to reduce the voltage for low-power devices; if more than 12V is required, or for high-powered devices, a switched-mode power supply is used. The output will usually be DC in the range 1.5–24 V. Power supplies that output either 100–120 V AC or 210–240 V AC are available; they are called inverters ...