Alternatively known as an AC/DC adapter, AC converter or charger, an AC adapter is an external power supply used with devices that run on batteries or have no other power source. AC adapters help reduce the size of a laptop computer by alleviating the need for a standard sized power supply. As shown in the image, an AC adapter is made up of a central unit which draws power from an AC outlet. It then converts the power to DC that is used by the computer, and a second cord that plugs into the computer.
Each AC adapter has a specific power rating, measured in volts or watts that it can handle and output to an electronic device. Because of the power rating and the type of plug on the end, an AC adapter is not universal and can only be used with devices with the same requirements and connector.
How an AC Adaptor Works
In short, an AC Adaptor converts the electric currents received by the electrical outlet into a typically lower alternating current that an electronic device can use.
Where to buy AC Adapters
Find the right AC Adapters for your laptop or any gadget at all at Banggood. Their Adapters are durable and of high quality.
For electronics that run on battery power, but may also be plugged into an electrical outlet, AC adaptors are used to convert alternating current into direct current.