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An AC adapter or AC/DC adapter (also called a wall charger, power adapter, power brick, or wall wart) [1] is a type of external power supply, often enclosed in a case similar to an AC plug. [2] AC adapters deliver electric power to devices that lack internal components to draw voltage and power from mains power themselves.
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 because of their safety; the hazardous 120 or 240 volt main current is transformed down to a ...
In addition to output voltage/current meters, few are equipped with a wattage (power) meter which indicates the product of both in real time, and a USB charging port. [15] [16] [17] Many models have a handle at the top for carrying. For cooling, a heat sink, fan, or both may be used. Heat sinks may be mounted externally or internally.
A number of extensions to the USB Specifications have progressively further increased the maximum allowable V_BUS voltage: starting with 6.0 V with USB BC 1.2, [43] to 21.5 V with USB PD 2.0 [44] and 50.9 V with USB PD 3.1, [44] while still maintaining backwards compatibility with USB 2.0 by requiring various forms of handshake before ...
An adaptor (in the context of plugs and sockets) is defined in IEC 60050 as "a portable accessory constructed as an integral unit incorporating both a plug portion and one or more socket-outlet portions". (There is an alternative spelling, 'adapter', but adaptor is the form usually used in standards and official documents.)
12-pin for PCI Express graphics cards, each PCI Express 12-pin connector can output a maximum of 648 W (12V, 9A), 2 150 W 8-pin can be combined via an adapter cable to form one 648 W 12-pin. 16-pin 12VHPWR connector for PCI Express graphics cards, each PCI Express 16-pin connector can output a maximum of 662 W (12V, 9.2A), 12 power pins, 4 ...