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  2. Brownout (electricity) - Wikipedia

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

    A switched-mode power supply will be affected if the brownout voltage is lower than the minimum input voltage of the power supply. As the input voltage falls, the current draw will increase to maintain the same output voltage and current, until such a point that the power supply malfunctions or its under-voltage protection kicks in and disables ...

  3. Power outage - Wikipedia

    en.wikipedia.org/wiki/Power_outage

    A brownout is a drop in voltage in an electrical power supply. The term brownout comes from the dimming experienced by incandescent lighting when the voltage sags. Brownouts can cause poor performance of equipment or even incorrect operation. A blackout is the total loss of power to a wider area and of long duration. [1]

  4. List of major power outages - Wikipedia

    en.wikipedia.org/wiki/List_of_major_power_outages

    The initial blackout lasted around 9 hours where at 21:00 local time power to most of the affected areas was restored, [236] with almost 20 hours of blackout in total. Initially, the PLN (Indonesia's state electricity company) stated that cause of the outage was due to disruptions in a number of plants in Java, [ 237 ] but later said that the ...

  5. Uninterruptible power supply - Wikipedia

    en.wikipedia.org/wiki/Uninterruptible_power_supply

    When power loss occurs, the rectifier simply drops out of the circuit and the batteries keep the power steady and unchanged. When power is restored, the rectifier resumes carrying most of the load and begins charging the batteries, though the charging current may be limited to prevent the high-power rectifier from damaging the batteries.

  6. Rolling blackout - Wikipedia

    en.wikipedia.org/wiki/Rolling_blackout

    A room during load shedding at night in West Bengal, India. A rolling blackout, also referred to as rota or rotational load shedding, rota disconnection, feeder rotation, or a rotating outage, is an intentionally engineered electrical power shutdown in which electricity delivery is stopped for non-overlapping periods of time over different parts of the distribution region.

  7. Electrical grid - Wikipedia

    en.wikipedia.org/wiki/Electrical_grid

    A brownout near Tokyo Tower in Tokyo, Japan. A brownout is an intentional or unintentional drop in voltage in an electrical power supply system. Intentional brownouts are used for load reduction in an emergency. [34] The reduction lasts for minutes or hours, as opposed to short-term voltage sag (or dip). The term brownout comes from the dimming ...

  8. Brownout - Wikipedia

    en.wikipedia.org/wiki/Brownout

    Brownout may refer to: Brownout (electricity), drop in voltage in an electrical power supply; Brownout (software engineering), a technique to make applications more tolerant to capacity shortages; Brownout (aeronautics), reduced flight visibility due to airborne particles, especially from helicopter downwash

  9. Voltage sag - Wikipedia

    en.wikipedia.org/wiki/Voltage_sag

    A voltage sag (U.S. English) or voltage dip [1] (British English) is a short-duration reduction in the voltage of an electric power distribution system. It can be caused by high current demand such as inrush current (starting of electric motors, transformers, heaters, power supplies) or fault current (overload or short circuit) elsewhere on the system.