Difference and relationship between power adapter and charger
The power adapter is a power converter that is transformed, rectified, and stabilized. The output is DC. When the power is satisfied, it can be understood as a low-voltage regulated power supply. The device includes control circuits that meet the charging characteristics, such as current limiting and voltage limiting. Now let ’s talk about what is the power adapter? What is a charger? What is the difference and relationship between the two.
Power adapter: English name Adapter
Common power adapters on the market are power converters that are transformed, rectified, and stabilized. The output is DC. Under the condition of meeting power, it can be understood as a low-voltage regulated power supply.
Power adapters are widely used in routers, phone handsets, game consoles, language repeaters, walkmans, notebooks, mobile phones and other devices. Most power adapters can automatically detect 100-240V AC (50 / 60Hz).
The power adapter is a small portable electronic device and a power conversion device for electronic appliances. It has an external power supply and is connected to the host with a cable. This can reduce the size and weight of the host. Only a few devices and appliances have the power built in the host. Inside.
It is internally composed of 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 wall-plug type and desktop type. There is a nameplate on the power adapter, which indicates the power, input and output voltage, and current indicators. Pay particular attention to the range of the input voltage.
Charger: English name Charger
Usually refers to a device that converts AC power to low-voltage DC power. The charger is a dedicated DC power supply for rechargeable batteries. It includes control circuits that meet the charging characteristics, such as current limiting and voltage limiting.
The charger is widely used in various fields, especially in the field of life, and is widely used in electric appliances, flashlights and other common electrical appliances. It generally charges the battery directly without passing through any intermediary devices and devices.
The flow 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 uses constant current charging, then constant voltage charging, and finally uses floating charging for maintenance charging.
Generally divided into three stages: fast charging, top-up charging, and trickle charging:
Fast charging stage: Charge the battery with a large current to quickly restore the battery power. The charging rate can reach 1C or higher. At this time, the charging voltage is low, but it will limit the charging current to a certain value range.
充电阶段：相对于快速充电阶段，补足充电阶段又可以称为慢速充电阶段。 Top-up charging phase: Compared to the fast-charging phase, the top-up charging phase can also be referred to as the slow-charging phase. When the fast charging phase is terminated, the battery is not completely sufficient, and a supplementary charging process needs to be added. The supplementary charging rate generally does not exceed 0.3C, because the battery voltage increases after the rapid charging phase, so the charging voltage during the supplementary charging phase is also It should be improved and kept within a certain range.
Trickle charging stage: In the late stage of the supplementary charging stage, when the temperature rise is detected to exceed the limit value or the charging current is reduced to a certain value, it starts to charge with a smaller current until it meets certain conditions and ends the charging.
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