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  2. Fan clutch - Wikipedia

    en.wikipedia.org/wiki/Fan_clutch

    Engine fan with viscous drive. A fan clutch is a thermostatic engine cooling fan that can freewheel at low temperatures when cooling is not needed, allowing the engine to warm up faster, relieving unnecessary load on the engine. As temperatures increase, the clutch engages so that the fan is driven by engine power and moves air to cool the engine.

  3. Computer fan - Wikipedia

    en.wikipedia.org/wiki/Computer_fan

    To cool these components, fans are used to move heated air away from the components and draw cooler air over them. Fans attached to components are usually used in combination with a heat sink to increase the area of heated surface in contact with the air, thereby improving the efficiency of cooling. Fan control is not always an automatic process.

  4. Macintosh startup - Wikipedia

    en.wikipedia.org/wiki/Macintosh_startup

    The Mac OS X startup screen from versions 10.2 to 10.9, displaying a dark-gray Apple logo on a lighter gray-white background as well as a loading throbber. In 2002, with the release of version 10.2, the Happy Mac symbol was retired and replaced with the Apple logo.

  5. Fan (machine) - Wikipedia

    en.wikipedia.org/wiki/Fan_(machine)

    A household electric fan A large cylindrical fan. A fan is a powered machine that creates airflow. A fan consists of rotating vanes or blades, generally made of wood, plastic, or metal, which act on the air. The rotating assembly of blades and hub is known as an impeller, rotor, or runner. Usually, it is contained within some form of housing ...

  6. Clear view screen - Wikipedia

    en.wikipedia.org/wiki/Clear_view_screen

    Other common names for it include "clear sight", "spin window", "Kent Screen" and "rotating windshield wiper". Clear view screens were patented in 1917 by Samuel Augustine de Normanville and Leslie Harcourt Kent as a stand-alone pillar-mounted screen, [ 1 ] with later patents for telescope and optics covers, followed by the more familiar ships ...

  7. Inrush current - Wikipedia

    en.wikipedia.org/wiki/Inrush_current

    It cannot limit the inrush current unless it cools for more than 1 minute to get a higher resistance. Another disadvantage is that the NTC thermistor is not short-circuit-proof. Another way to avoid the transformer inrush current is a "transformer switching relay". This does not need time for cool down.

  8. Big Ass Fans - Wikipedia

    en.wikipedia.org/wiki/Big_Ass_Fans

    Big Ass Fans is an American company that manufactures fans, evaporative coolers, and controls for industrial, agricultural, commercial and residential use. The company's headquarters is in Lexington, Kentucky , with additional offices in Australia, Malaysia, Singapore and Canada.

  9. Motor soft starter - Wikipedia

    en.wikipedia.org/wiki/Motor_soft_starter

    A motor soft starter is a device used with AC electrical motors to temporarily reduce the load and torque in the powertrain and electric current surge of the motor during start-up. This reduces the mechanical stress on the motor and shaft, as well as the electrodynamic stresses on the attached power cables and electrical distribution network ...