What is a power adapter?Power adapter is a power supply conversion equipment for small portable electronic equipment and electronic appliances. It generally consists of shell, power transformer and rectifier circuit. According to its output type, it can be divided into ac output type and dc output type. According to the connection can be divided into wall type and desktop type. It is widely used in telephone sub-machine, game machine, language repeater, walk man, laptop, cell phone and other equipment.
Most laptop power adapters are suitable for use with 100~240V ac (50/60hz). Most laptop computers have an external power supply, connected to the main machine by a power cord, which can reduce the size and weight of the main machine. A power adapter has a nameplate that indicates power, input/output voltage, and current. Pay special attention to the range of input voltage. This is called a "travel power adapter."
What is a charger?A charger is usually a device that converts alternating current to low-voltage direct current. Chargers are widely used in various fields, especially in the field of life is widely used for mobile phones, cameras and other common electrical appliances.
The charger is a static converter device which USES power electronic semiconductor devices to change the constant alternating current of voltage and frequency into direct current. In the battery as a working power source or backup power supply, the charger has a wide range of applications.
Differences between power adapter and charger.The charger contains the functions of the adapter, but there are also control circuits inside the charger, such as constant current and constant voltage, that meet the charging characteristics. The charging control circuit of the adapter is generally completed on the host computer. For example, mobile phone charger and laptop charger are just power adapters, which do not include charging control circuit inside. Charging control is completed inside the phone and computer.
The biggest difference between a charger and an adapter is that the charger only charges the battery, while the adapter not only charges the battery but also powers the host.