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  2. Ground-level power supply - Wikipedia

    en.wikipedia.org/wiki/Ground-level_power_supply

    A number of ground-level power supply systems were developed from the 1970s through the 1990s, [8] but were not reliable or safe enough for commercial use. [9] The first ground-level power supply system developed to modern safety standards was the Ansaldo Stream, [7] although a competing system, Alstom APS, was the first to be commercially ...

  3. Alstom APS - Wikipedia

    en.wikipedia.org/wiki/Alstom_APS

    The first ground-level power supply system developed to modern safety standards was the Ansaldo Stream, although Alstom APS was the first to be commercially implemented in 2003. [13] This success led to a proliferation of commercial implementations of ground-level power supply systems. [14]

  4. Earthing system - Wikipedia

    en.wikipedia.org/wiki/Earthing_system

    The TT earthing system is used throughout Japan, with RCD units in most industrial settings or even at home. This can impose added requirements on variable frequency drives and switched-mode power supplies which often have substantial filters passing high frequency noise to the ground conductor.

  5. Ground support equipment - Wikipedia

    en.wikipedia.org/wiki/Ground_support_equipment

    Ground power unit that needs towing. A ground power unit (GPU) is a vehicle capable of supplying power to aircraft parked on the ground. [2] Ground power units may also be built into the jetway, making it even easier to supply electrical power to aircraft.

  6. Single-wire earth return - Wikipedia

    en.wikipedia.org/wiki/Single-wire_earth_return

    Single-wire earth return (SWER) or single-wire ground return is a single-wire transmission line which supplies single-phase electric power from an electrical grid to remote areas at lowest cost. The earth (or sometimes a body of water) is used as the return path for the current, to avoid the need for a second wire (or neutral wire ) to act as a ...

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  8. Ground loop (electricity) - Wikipedia

    en.wikipedia.org/wiki/Ground_loop_(electricity)

    High-power devices should be placed closest to the power supply, while low-power devices can be placed farther from it. Signals, wherever possible, should be differential . Isolated power supplies require careful consideration of parasitic, component, or internal PCB power plane capacitance that can allow AC present on input power or connectors ...

  9. AOL Mail for Verizon Customers - AOL Help

    help.aol.com/products/aol-mail-verizon

    AOL Mail welcomes Verizon customers to our safe and delightful email experience!

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