The difference between USB charger and power adapter?

The difference between USB charger and power adapter?

Nowadays, there are more and more electronic devices in people’s lives, and there are various USB chargers and power adapters. Although they have been charging them all the time, there are many people who cannot clearly distinguish the difference between the two. Some even think that the two are the same thing. But in fact, although the USB charger and power adapter are similar in function, there are still differences.

The common power adapter on the market is a power converter that is transformed, rectified and regulated. The output is DC. It can be understood as a low-voltage regulated power supply when the power is satisfied. Its function is to convert AC high voltage electricity into a low voltage current of about 3V to 24V for the operation of electronic equipment, and is often called an external power supply.

The power adapter is a conversion to other appliances and is generally a constant voltage source output. The adapter usually only provides a 5V/100mA DC power supply, which can be charged with the charge control circuit. The USB charger is a constant current-constant voltage-turbulent, three-stage intelligent charging, which uses first constant current charging, then constant voltage charging, and finally uses floating charging for maintenance charging. And the USB charger can directly supply power to the battery, which is the main difference between the two.

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