With the development of society and the popularity of technology, more and more people are using electronic products. For example:Mobile phone power cord, data cable, charger, charging socket, laptop charging cable, USB, etc.. These may all be adapters. Think about how we charge our cell phones every day and how to charge our laptops? Today is mainly to tell you the difference between power adapter and charger, what exactly is an adapter and what does a power adapter do, come and learn!
The difference between a power adapter and a charger, can the two be mixed?
Charger: The English name of the charger Charger, is usually a device that converts AC power into low-voltage DC power. Charger is a DC power supply dedicated to rechargeable batteries, containing current limiting, voltage limiting and other control circuits to meet the charging characteristics.
Charger is widely used in various fields, especially in the life field, widely used in common appliances such as electric cars and flashlights. It usually charges the battery directly without going through any intermediate devices.
The difference between power adapter and charger is that the process of charger is: constant current - constant voltage - trickle, three-stage intelligent charging. The use of three-stage charging theory can greatly improve charging efficiency, shorten charging time and extend battery life. Three-level charging uses constant current charging, constant voltage charging, and floating charging for maintenance charging.
It can be generally divided into three stages: fast charging, supplementary charging and drip charging:
Fast charging stage:Charging the battery with high current can quickly restore the battery power, the charging rate can reach 1C or more, the charging voltage is lower, but the charging current will be limited to a certain range.
The difference between power adapter and charger consists of charging stage:Compared with the fast charging stage, the supplementary charging stage can also be called the slow charging stage. At the end of the fast charging phase, the battery is not fully charged and additional supplemental charging process is required. The supplemental charging rate generally does not exceed 0.3 c. As the battery voltage increases after the fast charging stage, the supplemental charging voltage should also increase and remain within a certain range.
Fine current charging stage:In the late stage of charging stage, when the temperature rise is detected to exceed the limit or the charging current is reduced to a certain value, the charging starts at a lower current until the charging ends after meeting certain conditions.
The common power adapter on the market is a power converter after the converter, rectifier and regulator, the output is DC, which can be understood as a low-voltage regulator in the case of encountering power.
The difference between power adapters and chargers is that power adapters are widely used in routers, telephone hosts, game consoles, language transponders, walkmans, laptops, cell phones and other devices. Most power adapters can automatically detect 100 ~ 240V ac (50/60Hz).
Power adapter is a small portable electronic devices and electronic appliances power conversion equipment, it puts the power supply outside, a line and the host connection, so as to reduce the size and weight of the host, only a few built within the host device integrated power supply part, mainly because of the size, or cost, or certification and many other factors.
The difference between power adapter and charger, its internal 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 method can be divided into wall and desktop. Each power adapter has a nameplate indicating the power supply, input/output voltage and current, with special attention to the range of input voltage.
What does a power adapter do
What is the function of a power adapter? Generally speaking, power adapters function as transformers and rectifiers. The AC power at home is 220V and the computer is 12V DC, so we can be sure that the power adapter is a transformer and a rectifier. The adapter is a transformer, so we should know that AC 220V is through the transformer for voltage, DC is through the rectifier for voltage, there is consumption, these consumption will be converted into heat, so it is normal for the power adapter to heat up.
Transformer is made of silicon steel sheet. After the transformer is energized, it will generate magnetic flux. The magnetic flux will produce force between the silicon steel sheet, producing a humming sound, which is normal. But too much sound is not normal for a number of reasons: 1. unstable AC voltage. 2. chip damage. 3. short circuit between turns. 4. component damage, etc. By the way, the purpose of the adapter is to convert AC power to DC power
The general size of the space required for the adapter is not small, the small size of the machine will choose an external power adapter, in order to save the product design volume and space, replacement is also convenient, the adapter is practical to use, generally speaking, the higher the voltage, the more dangerous to put inside the machine. So the power adapter and the device is separated mainly to isolate the area of high-voltage conversion, relatively speaking, the device is safer. The cost is also lower.
Summarize.
Due to the difference in function. Power adapter and charger are not to be mixed, especially the power adapter into the battery, the adapter is unable to complete the charging operation of the battery. If the battery has no protection device, it may directly lead to the damage of the battery. So please be sure to do whether the match before use.
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