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power adapter

   Also found in: Wikipedia 0.01 sec.

An external power supply for laptop computers and just about every portable or semi-portable electronic device on the market. Also called an "AC adapter," it contains a rectifier to convert AC current to DC and a transformer to convert voltage from 120 down to 9, 12, 15 or whatever is required. If a power adapter is not used with an electronic device, the power supply that creates the DC current is inside the unit. See transformer and power supply.

Adapters Need Room
The ubiquitous black power adapter may be a small box, but compared to an AC plug, its extra bulk makes it hard to plug in at times. Today, many power strips add extra space around their sockets (the bottom two in this image) in order to accommodate them.
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Its power adapter charges the battery by magnetically coupling the power cord to the computer.
A whole bushel by McClure, Ann / University Business
It also comes loaded with a built-in iSight video camera for video conferencing on-the-go, Front Row media experience with Apple Remote, DVI with dual display support, optical digital audio input and output, gigabit ethernet, scrolling trackpad, MagSafe power adapter and other advanced features.
MacBook: Apple by Patton, Carol / District Administration
All of these adapters leverage the Company's tip technology, which enables one power adapter to power/charge hundreds of brands and thousands of models of mobile electronic devices through the use of interchangeable tips.
Mobility Electronics to Present at the 9th Annual Needham & Co. ... by Business Wire
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