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  2. Uninterruptible power supply - Wikipedia

    en.wikipedia.org/wiki/Uninterruptible_power_supply

    A large data-center-scale UPS being installed by electricians. An uninterruptible power supply (UPS) or uninterruptible power source is a type of continual power system that provides automated backup electric power to a load when the input power source or mains power fails.

  3. UPS - Wikipedia

    en.wikipedia.org/wiki/UPS

    UPS most commonly refers to: Uninterruptible power supply, a device which provides continuous power to electronics; United Parcel Service, an American courier company;

  4. United Parcel Service - Wikipedia

    en.wikipedia.org/wiki/United_Parcel_Service

    United Parcel Service, Inc. (UPS) is an American multinational shipping & receiving and supply chain management company founded in 1907. [1] Originally known as the American Messenger Company specializing in telegraphs, UPS has expanded to become a Fortune 500 company [6] and one of the world's largest shipping couriers.

  5. List of computing and IT abbreviations - Wikipedia

    en.wikipedia.org/wiki/List_of_computing_and_IT...

    PCMCIA—Personal Computer Memory Card International ... UNIVAC—Universal Automatic Computer (By MKS) UPS—Uninterruptible Power Supply or Uninterrupted Power ...

  6. APC Smart-UPS - Wikipedia

    en.wikipedia.org/wiki/APC_Smart-UPS

    The Smart-UPS is a series of enterprise-level uninterruptible power supplies (UPS) made by American Power Conversion (APC). [1] Most of the units have a SmartSlot (with the exception of SC and SMC series) which accepts an optional interface card providing features ranging from network connectivity to temperature and humidity monitoring. [ 2 ]

  7. Power supply unit (computer) - Wikipedia

    en.wikipedia.org/wiki/Power_supply_unit_(computer)

    The desktop computer power supply converts the alternating current (AC) from a wall socket of mains electricity to a low-voltage direct current (DC) to operate the motherboard, processor and peripheral devices. Several direct-current voltages are required, and they must be regulated with some accuracy to provide stable operation of the computer.

  8. Backup battery - Wikipedia

    en.wikipedia.org/wiki/Backup_battery

    Backup batteries are used in uninterruptible power supplies (UPS), and provide power to the computers they supply for a variable period after a power failure, usually long enough to at least allow the computer to be shut down gracefully. [4] These batteries are often large valve regulated lead-acid batteries in smaller or portable systems.

  9. Diesel rotary uninterruptible power supply - Wikipedia

    en.wikipedia.org/wiki/Diesel_rotary...

    Most forms of uninterruptible power supply (UPS) can be either powered by battery or flywheel energy. These are ready for immediate use at the instant that the mains electricity fails, but the relatively small and finite amount of stored energy they contain makes them suitable for short periods of use, typically in the order of a few dozen minutes to a couple of hours depending on the actual load.