An AC power pack provides alternating current (AC) power to different electronic and electrical devices from a direct current (DC) source. It is a handy item for powering a variety of items in a variety of ways.
The most common type of AC power pack is designed for use with a laptop computer or other mobile device. It typically plugs into the outlet or USB port of the device, providing the required voltage to power up the device. The power can then be adjusted with a switch or dial to accommodate different application requirements.