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 ...

USB chargers plug into an AC outlet and provide a USB Type A or Type C socket to cable DC power to the device. At the device side, various USB sockets along with Apple's Lightning interface have ...

More information: Haitham Kanakri et al, Capacitorless Solid-State Power Filter for Single-Phase DC-AC Converters, CES ...