Difference between chargers and adapters
A power charger usually refers to a device that converts AC power into low-voltage DC power, which includes internal control circuits to meet the charging characteristics such as current limiting, voltage limiting, etc. A power adapter is a power converter that undergoes voltage transformation, rectification and voltage stabilization, and DC output, which can be understood as a low-voltage regulated power supply in the case of meeting the power. Let’s talk about what is a power charger? What is a power adapter? What is the relationship/difference between them.
A power charger, usually refers to a device that converts AC power into low-voltage DC power, the charger is a special DC power supply for rechargeable batteries, which includes internal control circuits to limit the current, voltage and other charging characteristics to meet. Charges are widely used in various fields, especially in the field of mobile devices, electric vehicles, flashlights and other common appliances. It generally charges the battery directly, without any intermediary devices or equipment.
The process of the power charger has three-stage intelligent charging: constant current – constant voltage – trickle current. 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. The three-stage charging uses constant current charging, then constant voltage charging, and finally float charging for maintenance charging. It is generally divided into three stages: fast charging, top-up charging and trickle charging.
- Fast charging stage: the battery is charged with high current to quickly restore the battery power, the charging rate can reach more than 1C, the charging voltage is lower at this time, but will limit the charging current within a certain value range.
- Top-up charging stage: Compared with the fast charging stage, the top-up charging stage can also be called the slow charging stage. When the fast charging stage is terminated, the battery reaching 60% or above full, which is not fully charged, so it needs complementary charging. The top up charging rate generally does not exceed 0.3C, because the battery voltage increases after the fast charging stage, so the charging voltage in the complementary charging stage should also increase and be constant within a certain range.
- Trickle charge stage: In the late stage of the complementary charging stage, when the temperature rise is detected beyond the limit or after the charging current is reduced to a certain value, it starts charging with a smaller current until it meets certain conditions and then ends charging.
Power adapter, the common power adapter on the market is after the conversion, rectification and voltage regulator power converter, the output is DC, in the case of meeting the power can be understood as a low-voltage regulated power supply.
Power adapters are widely used in routers, telephone , game consoles, language repeaters, Walkman, notebooks, and other devices. Most power adapters can automatically detect 100 to 240V AC (50/60Hz). Power adapter is a small portable electronic devices and electronic appliances power supply power conversion equipment. Its external power supply, with a line and the host connection, which can reduce the size and weight of the console, only a very small number of devices and appliances to power built-in in the console.
It is internally composed of power transformer and rectifier circuit. Based on its output type, they can be divided into AC output type and DC output type. Based on the connection method, they 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 power flow and other indicators.
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