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  2. Constant-voltage speaker system - Wikipedia

    en.wikipedia.org/wiki/Constant-voltage_speaker...

    600 watt transformers are widely available for contractors needing high power loudspeakers in constant-voltage installations. [12] Special-purpose transformers capable of handling 1250 watts down as low as 50 Hz are available. [4] One problem with high power, high current transformers is that fewer can be used on a single constant-voltage line.

  3. Tap converter - Wikipedia

    en.wikipedia.org/wiki/Tap_converter

    Both linear spacing and power-of-two-style Vernier spacing can be employed in establishing the tap positions, e.g., a four-tap transformer can provide taps at 0.25, 0.5, 0.75, 1.0 (linear) or 0.0625, 0.125, 0.25, and 0.5 (Vernier). (The limitations of the Vernier—in this case, that the maximum obtainable amplitude is 0.9375—are less ...

  4. List of power stations in Massachusetts - Wikipedia

    en.wikipedia.org/wiki/List_of_power_stations_in...

    This is a list of electricity-generating power stations in the U.S. state of Massachusetts, sortable by type and name. In 2022, Massachusetts had a total summer capacity of 12,767 MW through all of its power plants, and a net generation of 21,026 GWh. [ 2 ]

  5. List of railway electrification systems - Wikipedia

    en.wikipedia.org/wiki/List_of_railway...

    Operated 1914–1950. 600 V in city limits California: Sacramento Northern Railway: Operated 1910–1936. Converted to 1,500 V. The southern division was built by the Oakland, Antioch and Eastern Railway. East Bay, California: East Bay Electric Lines: 1911–1941 Oregon: Oregon Electric Railway: 1912–1945

  6. Tap changer - Wikipedia

    en.wikipedia.org/wiki/Tap_changer

    However, a transformer may include a tap changer on each winding if there are advantages to do so. For example, in power distribution networks, a large step-down transformer may have an off-load tap changer on the primary winding and an on load automatic tap changer on the secondary winding or windings. The high voltage tap is set to match long ...

  7. Holbrook Superconductor Project - Wikipedia

    en.wikipedia.org/wiki/Holbrook_Superconductor...

    The Holbrook Superconductor Project is the world's first production superconducting transmission power cable. [1] The lines were commissioned in 2008. [2] The suburban Long Island electrical substation is fed by a 600 meter long tunnel containing approximately 155,000 meters of high-temperature superconductor wire manufactured by American Superconductor, installed underground and chilled to ...

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