The difference between power adapter and charger

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  • Jimmy at
  • December 08, 2020

The difference between power adapter and charger

Power adapter generally refers to the DC or low-voltage AC power supply needed to convert our city power into notebook, mobile phone, indicator, router, switch and other electrical appliances. For notebook and mobile phone, power adapter is charger, but for most other parts, power adapter is only a power supply. Before introducing the difference between charger and power adapter, let's first know what is charger and what is power adapter. The power adapter manufacturer will make a good analysis for you


Charger, usually refers to a kind of equipment that converts alternating current into low-voltage direct current. It includes current limiting, voltage limiting and other control circuits to meet the charging characteristics. Charger is widely used in various fields, especially in the field of life is widely used in mobile phones, cameras and other common electrical appliances. It generally charges the battery directly without any intermediary equipment and device. Charger process is: constant current - constant voltage - trickle, three - step intelligent charging. The three-stage charging theory can greatly improve the charging efficiency, shorten the charging time and effectively extend the battery life. Three stage charging adopts constant current charging, then constant voltage charging, and finally floating charging for maintenance charging.

Power adapter:
Most power adapters can automatically detect 100-240V AC (50 / 60Hz). Power adapter is a small portable electronic equipment and electronic appliances power supply conversion equipment, it external power supply, with a line to connect with the host, so that the size and weight of the host can be reduced, only a very small number of equipment and electrical appliances have the power supply built into the host. It is composed of power transformer and rectifier circuit. According to its output type, it can be divided into AC output type and DC output type; according to connection mode, it can be divided into wall type and desktop type. There is a name plate on the power adapter, which indicates the power, input and output voltage and current quantity. Pay special attention to the range of input voltage.