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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.
For example, a 900-watt power supply with the 80 Plus Silver efficiency rating (which means that such a power supply is designed to be at least 85% efficient for loads above 180 W) may only be 73% efficient when the load is lower than 100 W, which is a typical idle power for a desktop computer. Thus, for a 100 W load, losses for this supply ...
Media in category "Uninterruptible power supply" This category contains only the following file. Smartups-2200xlrm3u-inside.jpg 1,067 × 729; 409 KB
UMPC—Ultra-Mobile Personal Computer; UMTS—Universal Mobile Telecommunications System; UNC—Universal Naming Convention; UNIVAC—Universal Automatic Computer (By MKS) UPS—Uninterruptible Power Supply or Uninterrupted Power Supply; URI—Uniform Resource Identifier; URL—Uniform Resource Locator; URN—Uniform Resource Name; USB ...
Taking this one stage further, the clue word can hint at the word or words to be abbreviated rather than giving the word itself. For example: "About" for C or CA (for "circa"), or RE. "Say" for EG, used to mean "for example". More obscure clue words of this variety include: "Model" for T, referring to the Model T.
A power supply is an electronic device that supplies electric energy to an electrical load. Power supply may also refer to: Power supply unit (computer) a computer component; Electricity delivery to households and industry via electric power generation and distribution networks; Power Supply, a 1980 album of Budgie
An integrated power supply is one that shares a common printed circuit board with its load. An external power supply, AC adapter or power brick, is a power supply located in the load's AC power cord that plugs into a wall outlet; a wall wart is an external supply integrated with the outlet plug itself. These are popular in consumer electronics ...
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.