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  2. Vacuum variable capacitor - Wikipedia

    en.wikipedia.org/wiki/Vacuum_variable_capacitor

    A vacuum variable capacitor. A vacuum variable capacitor is a variable capacitor which uses a high vacuum as the dielectric instead of air or other insulating material. This allows for a higher voltage rating than an air dielectric [1] using a smaller total volume.

  3. Mains electricity by country - Wikipedia

    en.wikipedia.org/wiki/Mains_electricity_by_country

    Frequency and voltage supplied to most premises by country. Mains electricity by country includes a list of countries and territories, with the plugs, voltages and frequencies they commonly use for providing electrical power to low voltage appliances, equipment, and lighting typically found in homes and offices.

  4. Mains electricity - Wikipedia

    en.wikipedia.org/wiki/Mains_electricity

    A 50 Hz ±5 Hz vibrating-reed mains frequency meter for 220 V. The world's first public electricity supply was a water wheel driven system constructed in the small English town of Godalming in 1881. It was an alternating current (AC) system using a Siemens alternator supplying power for both street lights and consumers at two voltages, 250 V ...

  5. Variable capacitor - Wikipedia

    en.wikipedia.org/wiki/Variable_capacitor

    A digitally tuned capacitor is an IC variable capacitor based on several technologies. MEMS , BST and SOI / SOS devices are available from a number of suppliers and vary in capacitance range, quality factor and resolution for different RF tuning applications.

  6. Man United forward Amad Diallo signs contract extension to 2030

    www.aol.com/man-united-forward-amad-diallo...

    Manchester United forward Amad Diallo has signed a contract extension with the Premier League club until 2030. Diallo, who scored a late equalizer in a 2-2 draw with league leader Liverpool on ...

  7. Induction generator - Wikipedia

    en.wikipedia.org/wiki/Induction_generator

    As an example, consider the use of a 10 hp, 1760 r/min, 440 V, three-phase induction motor (a.k.a. induction electrical machine in an asynchronous generator regime) as asynchronous generator. The full-load current of the motor is 10 A and the full-load power factor is 0.8. Required capacitance per phase if capacitors are connected in delta: