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  2. Jack (device) - Wikipedia

    en.wikipedia.org/wiki/Jack_(device)

    A house jack, also called a screw jack, is a mechanical device primarily used to lift buildings from their foundations for repairs or relocation. A series of jacks is used and then wood cribbing temporarily supports the structure. This process is repeated until the desired height is reached.

  3. Electrical connector - Wikipedia

    en.wikipedia.org/wiki/Electrical_connector

    An electrical connector is an electromechanical device used to create an electrical connection between ... A jack is a connector that installs on the surface of a ...

  4. Pallet jack - Wikipedia

    en.wikipedia.org/wiki/Pallet_jack

    An electric pallet jack. The recharging lead can be seen. Powered pallet jacks, also known as electric pallet trucks, walkies, single or double pallet jacks, or power jack, are motorized to allow lifting and moving of heavier and stacked pallets. Some contain a platform for the user to stand while moving pallets.

  5. Telephone jack and plug - Wikipedia

    en.wikipedia.org/wiki/Telephone_jack_and_plug

    A telephone jack and a telephone plug are electrical connectors for connecting a telephone set or other telecommunications apparatus to the telephone wiring inside a building, establishing a connection to a telephone network. The plug is inserted into its counterpart, the jack, which is commonly affixed to a wall or baseboard. The standards for ...

  6. Modular connector - Wikipedia

    en.wikipedia.org/wiki/Modular_connector

    On the plug, the contacts are flat metal bars positioned parallel to the connector body. Inside the jack, the contacts are metal spring wires angled away from the insertion interface. When the plug is mated with the jack, the contacts meet and create an electrical connection. The spring force of the jack contacts ensures a good interface.

  7. Reference designator - Wikipedia

    en.wikipedia.org/wiki/Reference_designator

    1A1A44J5 - Unit 1, Assembly 1, Sub-Assembly 44, Jack 5 (J5 is a connector on a box referenced as A44) 1A1A45J333 - Unit 1, Assembly 1, Sub-Assembly 45, Jack 333 (J333 is a connector on a box referenced as A45) A cable connecting these two might be: 1A1W35 - In the assembly A1 is a cable called W35. Connectors on this cable would be designated: