The adapter is a Chinese translation of English Adapter/adaptor. An adapter is an interface converter that can be a separate hardware interface device that allows a hardware or electronic interface to be connected to other hardware or electronic interfaces, or an information interface.
Power adapter is a power supply conversion device for small portable electronic devices and electronic appliances. It is generally composed of a casing, a power transformer and a rectifier circuit. It can be divided into an AC output type and a DC output type according to its output type; Divided into wall-mounted and desktop. Widely used in telephone sub-machines, game consoles, language repeaters, walkmans, laptops, cellular phones and other equipment.
Switching power supply is a kind of power supply that uses modern power electronics technology to control the ratio of time when the switch is turned on and off, and maintains a stable output voltage. The switching power supply is generally composed of a pulse width modulation (PWM) control IC and a MOSFET. With the development and innovation of power electronics technology, switching power supply technology is constantly innovating. At present, switching power supplies are widely used in almost all electronic devices due to their small size, light weight and high efficiency. It is an indispensable power supply method for the rapid development of the electronic information industry.