power adapter

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power adapter

A power supply for electronic devices. Also called an "AC adapter" or "charger," power adapters plug into a wall outlet and convert AC to a single DC voltage. Computers use multiple DC voltages, and the power adapter is the external part of the power supply for a laptop. The additional DC voltages are created by internal circuits. Desktop computer power supplies are in one internal unit, which converts AC to all DC voltages.

Power adapters also exist for other purposes; for example, to output a different AC voltage, rather than DC. See transformer, power supply, power distribution unit, wall wart, wall tap, power strip and USB charger.

The Laptop Power "Brick"
The weight of a laptop's external AC adapter is hardly ever published in the specs, but it adds bulk and poundage in the briefcase.

The "Wall Wart"
The ubiquitous black adapter with its own AC plug often overlaps the adjacent socket, unless a "wall wart-aware" power strip like this one is used.
References in periodicals archive ?
The recall does not affect any Apple USB power adapters.
The European USB power adapter came with iPhone 3GS, iPhone 4 and iPhone 4S models shipped from October 2009 to September 2012.
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Dell determined that the issue was related to the limitation of the 90W power adapter that was shipped with the notebook.
The device uses a power adapter or four AA batteries and features a built-in port for printing/electronic communication.
Luckily, the solution to this problem involves not garlic but simply a more energy-efficient power adapter: the EcoCharge by Ventev.
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"Salcomp's strategic target is to achieve add-on growth from mobile phone charger segment as well as from other selected power adapter and charger segments," CEO Markku Hangasjarvi said.
Comarco Inc, a provider of mobile power solutions, announced on 17 October that it has been awarded a follow-on contract to supply its ChargeSource universal power adapter which will be offered by Lenovo as an accessory for its line of notebook computers.
Both machines support up to 4GB memory with a 160GB hard drive, and features include either a DVD-ROM DL SATA150 16-48X Max Drive, or a Super Multi-burner DL DVD [+ or -] RW drive, as well as an external power adapter.
They also have a built-in iSight video camera and a MagSafe Power Adapter that magnetically connects the power cord and safely disconnects when under strain.
An external power adapter and mini-USB cable are included.--D-Link Systems