The charger usually refers to a device that converts alternating current into low-voltage direct current, which includes a control circuit that meets the charging characteristics such as current limiting and voltage limiting, and the power adapter is a power converter after voltage change, rectification and voltage regulation, and the output is DC, which can be understood as a low-voltage voltage regulation power supply in the case of meeting the power. Let's talk about what is a power adapter? What's the charger? What is the relationship between the two and the difference between them?

Charger: The English name charger usually refers to a device that converts alternating current into low-voltage direct current. The charger is a dedicated DC power supply for rechargeable batteries, which includes a control circuit that meets the charging characteristics such as current limiting and voltage limiting.

Chargers are widely used in various fields, especially in the field of life is widely used in electric vehicles, flashlights and other common electrical appliances. It is generally to charge the battery directly, not through any intermediary devices and devices.

The process of the charger is: constant current - constant voltage - trickle, three-stage intelligent charging. The three-stage charging theory in the charging process can greatly improve the charging efficiency of the battery, shorten the charging time, and effectively extend the battery life. Three-stage charging adopts constant current charging, then constant voltage charging, and finally adopts floating charging for maintenance charging.

Generally divided into fast charging, supplementary charging, trickle charging three stages:

Fast charging stage: Charge the battery with a large current to quickly restore the battery power, the charging rate can reach more than 1C, at this time the charging voltage is low, but it will limit the charging current within a certain range of values.

Supplementary charging stage: Compared with the fast charging stage, the supplementary charging stage can also be called the slow charging stage. When the fast charging stage is terminated, the battery is not fully sufficient, and the replenishment charging process needs to be added, and the replenishment charging rate is generally not more than 0.3C, because the battery voltage has increased after the fast charging stage, so the charging voltage of the replenishment charging stage should also be increased, and be constant within a certain range.

Trickle charging stage: In the late replenishment charging stage, when the temperature is detected to rise beyond the limit value or the charging current is reduced to a certain value, it starts to charge with a smaller current until certain conditions are met.

Power Adapter: The English name Adapter, the common power adapter on the market is a power converter after transformer, rectifier and voltage regulation, the output is DC, in the case of meeting the power can be understood as a low-voltage voltage regulation power supply.

Power adapters are widely used in routers, telephone machines, game consoles, language rereaders, walkmen, notebooks, mobile phones and other devices. Most power adapters can automatically detect 100 to 240V AC (50/60Hz).

The power adapter is a small portable electronic equipment and electronic electrical power supply conversion equipment, it puts the power external, with a line and the host connection, so that you can reduce the size and weight of the host, only a very small number of equipment and electrical power is built in the host.

It is composed of power transformer and rectifier circuit, according to its output type can be divided into AC output type and DC output type; According to the connection mode can be divided into wall type and desktop type. There is a nameplate on the power adapter, which marks the power, input and output voltage and current and other indicators, paying special attention to the range of input voltage.

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