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Is the power adapter and charger the same? If it's different, what's the difference

The power adapter and charger are not the same thing. The differences are as follows:

1. Different definitions. A power adapter is a power conversion device for small portable electronic devices and electronic appliances. It is generally composed of a shell, a power transformer, and a rectifier circuit. According to its output type, it can be divided into AC output type and DC output type; According to the connection method, it can be divided into plug-in wall type and desktop type. A charger is a static converter device that uses power electronic semiconductor devices to convert AC power with fixed voltage and frequency into DC power

2. The charger includes the function of an adapter, but there are control circuits such as constant current and constant voltage inside the charger that meet the charging characteristics. The charging control circuit of the adapter is generally completed on the host. For example, mobile phone chargers and laptop chargers are actually just power adapters, which do not include charging control circuits internally. Charging control is done 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 can not only charge the battery but also provide power to the host

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