What is the difference between a power adapter and a charger?

Difference: 1. The power adapter consists of a shell, a transformer, a PCB board, etc.; the charger consists of a shell, an input terminal, an output terminal, etc. 2. The current mode of the power adapter is from AC input to DC output; the current mode of the charger uses a constant current and voltage limiting charging system.

The difference between power adapter and charger

The difference between power adapter and charger There are mainly the following aspects

1. Different definitions. The power adapter is a device for converting the power supply of electronic equipment and electronic appliances. The charger uses high-frequency power supply technology and advanced intelligent dynamic adjustment charging technology.

2. The structure is different. The power adapter consists of a shell, a transformer, a pcb board, etc. The charger consists of a shell, an input terminal, an output terminal, etc.

3. The current modes are different. The current mode of the power adapter is from AC input to DC output. The charger's current mode uses a constant current and voltage limiting charging system.

Charger:

The English name Charger usually refers to a device that converts alternating current into low-voltage direct current. The charger is for A dedicated DC power supply for rechargeable batteries, which includes current limiting, voltage limiting and other control circuits to meet charging characteristics.

Chargers are widely used in various fields, especially in the field of life and are widely used in common electrical appliances such as electric vehicles and flashlights. It generally charges the battery directly without any intermediary equipment and devices. The process of the charger is: constant current-constant voltage-trickle, three-stage intelligent charging. The three-stage charging theory during 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 float charging for maintenance charging.

Generally divided into three stages: fast charging, top-up charging, and trickle charging:

Fast charging stage: Use large current to charge the battery to quickly restore battery energy , the charging rate can reach more than 1C. At this time, the charging voltage is low, but the charging current will be limited to 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 phase is terminated, the battery is not fully charged, and a top-up charging process needs to be added. The top-up charging rate generally does not exceed 0.3C. Because the battery voltage increases after the fast charging phase, the charging voltage in the top-up charging phase is also It should be improved and kept within a certain range.
Trickle charging stage: In the later stage of the supplementary charging stage, when it is detected that the temperature rise exceeds the limit value or the charging current decreases to a certain value, charging begins with a smaller current until Charging ends when certain conditions are met.

Power adapter:English name Adapter, the common power adapter on the market is transformed, rectified and The output of a regulated power converter is DC, which can be understood as a low-voltage regulated power supply when the power is met.

Power adapters are widely used in routers, telephone base stations, game consoles, language repeaters, Walkmans, notebooks, mobile phones and other equipment. Most power adapters can automatically detect 100~240V AC (50/60Hz).

The power adapter is a power supply conversion device for small portable electronic equipment and electronic appliances. It externally connects the power supply to the host with a line. This can reduce the size and weight of the host. Only a few devices and The electrical appliance has the power supply built into the main unit.

It is internally composed of a power transformer and a rectifier circuit. It can be divided into AC output type and DC output type according to its output type; it can be divided into wall-plug type and desktop type according to the connection method. There is a nameplate on the power adapter, which indicates the power, input and output voltage, and current. Pay special attention to the input voltage range.

What is the function of the power adapter

Generally speaking, the function of the power adapter is a transformer and a rectifier. Household AC power is 220v, and our computer's power supply is DC 12v (it seems to be), so we can be sure that the power adapter is a transformer and rectifier. The adapter is a transformer, so we should all know that AC 220v is transformed through the transformer and DC through the rectifier. There is consumption here, and these consumptions will be converted into heat, so it is normal for the power adapter to heat up.

The transformer is made of silicon steel sheets. When the transformer is energized, magnetic flux is generated. The magnetic flux will cause force to act between the silicon steel sheets, thus producing a buzzing sound. This is normal. However, the sound from the ground becomes abnormal if it is too high. There are many reasons: 1. The AC voltage is unstable. 2. The chip is damaged. 3. Short circuit between turns. 4. Component damage, etc. By the way, the adapter is an electronic product that converts alternating current into direct current

Power adapters with large space are generally built-in. Generally, adapters are not small in size. Small-sized machines are all external. In order to save space, it is also convenient to replace. The mains power used by the adapter has a relatively high voltage. , it is more dangerous to put it inside the machine.

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