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Can the power adapter be used as a charger?
time2006/12/23
- The power adapter is generally a transformer power supply. The charger is generally a switching power supply. As long as the voltage of the power adapter and the charger voltage are the same or only a few volts apart, they can be used universally.
The power adapter is generally a transformer power supply. The charger is generally a switching power supply. As long as the voltage of the power adapter and the charger voltage are the same or only a few volts apart, they can be used universally.
The power adapter cannot be used as a charger. The difference is:
The charger usually refers to a device that converts alternating current into low-voltage direct current. It includes a control circuit that meets the charging characteristics, such as current limiting and voltage limiting. The power adapter is a power converter that is transformed, rectified, and regulated. The output is DC, which can be understood as a low-voltage regulated power supply when the power is satisfied.
The charger is a device that converts alternating current into low-voltage direct current. The charger is a dedicated DC power supply for rechargeable batteries. It includes a current limiting, voltage limiting and other control circuit that satisfies the charging characteristics.
The flow of the charger is: constant current - constant voltage - turbulence, 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. The three-stage charging adopts constant current charging, constant voltage charging, and finally uses floating charging for maintenance charging.
Generally divided into three stages: fast charging, complementary charging, and trickle charging:
Fast charging phase: 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 lower, but the charging current is limited to a certain value range.
Complementing the charging phase: Compared to the fast charging phase, the complementary charging phase can also be called the slow charging phase. When the fast charging phase is terminated, the battery is not fully charged, and it is necessary to add a supplementary charging process. The charging rate is generally not more than 0.3C, because the battery voltage is increased after the fast charging phase, so the charging voltage of the charging phase is also supplemented. It should be improved and constant within a certain range.
Trickle charging phase: After the late charging phase is detected, when it is detected that the temperature rise exceeds the limit value or the charging current decreases to a certain value, charging with a smaller current is started until the charging is completed until a certain condition is satisfied.
Power adapter: English name Adapter, 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.
Power adapters are widely used in routers, telephone handsets, game consoles, language repeaters, walkmans, notebooks, mobile phones and other devices. Most power adapters can automatically detect 100 to 240V AC (50/60Hz).
The power adapter is a power supply conversion device for small portable electronic devices and electronic appliances. It connects the power supply externally and connects to the host computer by a line. This can reduce the size and weight of the mainframe. Only a very small number of devices and electrical appliances are built into the mainframe. Inside.
It is internally composed of a power transformer and a rectifier circuit. It can be divided into an AC output type and a DC output type according to its output type; it can be divided into a wall type and a desktop type according to the connection mode. There is a nameplate on the power adapter, which indicates the power, input and output voltage and current amount, etc., paying particular attention to the range of the input voltage.