Wall Mount Power Supplies enclosed in a non-flammable plastic enclosure are with an AC plug that mechanically mounts the power supply to the AC outlet. A DC output lead connects the wall mount power supply's DC output voltage to the device being powered. Wall Mount power supplies have many names including AC adapters, plug-in adapter, wall bumps, wall adapters, wall warts, wall plug transformers, linear wall mount, power cubes.
External Power Supplies for battery-powered equipment may be described as chargers or rechargers.
Regardless of the name, these power supplies are the most common source of low voltage power.
They consist of small plastic boxes that plug directly into the wall.
While they come in a variety of performance and quality levels.
These products are used with devices that cannot afford the size / heat or safety compliance challenges required of internal power conversion circuits.
These products can be used for devices that do not have other sources of power, as well as battery-powered devices that sometimes charge batteries in addition to powering the device when the power is plugged in.