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  2. Computer fan control - Wikipedia

    en.wikipedia.org/wiki/Computer_fan_control

    A fan controller with LEDs indicating fan status and potentiometers and switches to control fan speeds Another method, popular with PC hardware enthusiasts, is the manual fan speed controller. They can be mounted in an expansion slot or a 5.25" or 3.5" drive bay or come built into a computer's case.

  3. Programmable logic controller - Wikipedia

    en.wikipedia.org/wiki/Programmable_logic_controller

    A programmable logic controller (PLC) or programmable controller is an industrial computer that has been ruggedized and adapted for the control of manufacturing processes, such as assembly lines, machines, robotic devices, or any activity that requires high reliability, ease of programming, and process fault diagnosis.

  4. Lighting control system - Wikipedia

    en.wikipedia.org/wiki/Lighting_control_system

    Lighting control system. A lighting control system incorporates communication between various system inputs and outputs related to lighting control with the use of one or more central computing devices. Lighting control systems are widely used on both indoor and outdoor lighting of commercial, industrial, and residential spaces.

  5. Eastern span replacement of the San Francisco–Oakland Bay ...

    en.wikipedia.org/wiki/Eastern_span_replacement_of...

    The eastern span replacement of the San Francisco–Oakland Bay Bridge was a construction project to replace a seismically unsound portion of the Bay Bridge with a new self-anchored suspension bridge (SAS) and a pair of viaducts. The bridge is in the U.S. state of California and crosses the San Francisco Bay between Yerba Buena Island and ...

  6. Variable-frequency drive - Wikipedia

    en.wikipedia.org/wiki/Variable-frequency_drive

    A variable-frequency drive ( VFD, or adjustable-frequency drive, adjustable-speed drive, variable-speed drive, AC drive, micro drive, inverter drive, or drive) is a type of AC motor drive (system incorporating a motor) that controls speed and torque by varying the frequency of the input electricity. Depending on its topology, it controls the ...

  7. Traffic light - Wikipedia

    en.wikipedia.org/wiki/Traffic_light

    Lights have not counted down, when 99 seconds are left, start counting. During the standby time, the light may be displayed as "99", "00", "--" or not displayed. Last 2 digits count light of the timeout (the counter light is 15 while the time is 115 seconds, there are some types of lights that count as "-9" or "9-" when the time is 109 seconds)

  8. Solar lamp - Wikipedia

    en.wikipedia.org/wiki/Solar_lamp

    Solar lamp. A solar lamp, also known as a solar light or solar lantern, is a lighting system composed of an LED lamp, solar panels, battery, charge controller and there may also be an inverter. The lamp operates on electricity from batteries, charged through the use of a solar photovoltaic panel. Solar-powered household lighting can replace ...

  9. Mercedes-Benz G-Class - Wikipedia

    en.wikipedia.org/wiki/Mercedes-Benz_G-Class

    In the same year, the 100,000th G Model was built in Graz and in 1994, the model line was officially renamed the G-Class. Ventilated front disc brakes and a driver's air bag became standard. In 1996 the automatic transmission became an electronically controlled 5-speed unit and headlamp washers, cruise control, and a front passenger's air bag ...

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