What is the power adapter

　　The power adapter is also called an external power supply. It is a power supply voltage conversion device for small portable electronic devices and electronic appliances. 24V power adapters are commonly used in mobile phones, LCD monitors and notebook computers, telephone master consoles, game consoles, language repeaters, walkmans, and cellular phones. Phones and other small electronic products.

　　Its function is to convert the high voltage of 220 volts at home into a stable low voltage of about 5 volts to 20 volts that these electronic products can work, so that they can work normally.

　　1. What is the function of the power adapter

　　The function of the power adapter is to convert the high voltage of 220 volts at home into a stable low voltage of about 5 volts to 20 volts that these electronic products can work, so that they can work normally. Without it, it will bring a lot of inconvenience to our daily use. The power adapter is also called an external power supply. It is a power supply voltage conversion device for small portable electronic devices and electronic appliances. It is commonly found in small electronic products such as mobile phones, liquid crystal displays, and notebook computers.

　　What's the use of the power adapter? Simply put, the function of the power adapter is the function of voltage transformation, that is, the high voltage of the visual AC is converted into low voltage DC power through the rectification and transformation of the power adapter. For example, input: 100- 240VAC 50-60HZ output: 12VDC 1A This is the conversion of high voltage 100-240V into low voltage 12V. Generally speaking, there is a nameplate on the power adapter, which indicates the power, output, input voltage, and current targets. Pay special attention to the scope of the output voltage. This is the so-called "tour power adapter". If the mains voltage is as long as In the 100V country, this feature is very effective. Some imported notebook computers are only sold in the country of origin. There is no such plan, and as long as a single output voltage of 100V is required, just plug it in under the 220V mains voltage in our country. Will be discarded.

　　Second, the difference between power adapter and charger

　　Before introducing the difference between a charger and a power adapter, let's first understand what a charger is and what is a power adapter. The charger usually refers to a device that converts AC power into low-voltage DC power. It includes control circuits that meet the charging characteristics such as current limiting and voltage limiting. The power adapter is a power converter that has undergone transformation, rectification, and stabilization. The output is direct current, which can be understood as a low-voltage regulated power supply when the power is satisfied.

　　The power adapter manufacturers come to analyze for everyone:

　　Power Adapter

　　charger:

　　A charger usually refers to a device that converts alternating current to low-voltage direct current. It includes control circuits that meet the charging characteristics such as current limiting and voltage limiting. Chargers are widely used in various fields, especially in the field of life are widely used in common electrical appliances such as mobile phones and cameras. It generally charges the battery directly without passing through any intermediary equipment and devices. The charger process is: constant current-constant voltage-trickle, three-stage smart 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 first, then constant voltage charging, and finally floating charging for maintenance charging.

　　Power Adapter:

　　A charger usually refers to a device that converts alternating current to low-voltage direct current. It includes control circuits that meet the charging characteristics such as current limiting and voltage limiting. Chargers are widely used in various fields, especially in the field of life are widely used in common electrical appliances such as mobile phones and cameras. Most power adapters can automatically detect 100-240V alternating current (50/60Hz). The power adapter is a power supply conversion device for small portable electronic equipment and electronic appliances. It puts the power supply externally and connects it to the host with a line, which can reduce the size and weight of the host. Only a few devices and electrical appliances have the power supply 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 mode, it can be divided into wall type and desktop type. There is a nameplate on the power adapter, which indicates the power, input and output voltage and current and other indicators. Pay special attention to the range of the input voltage.

　　3. What material is the power adapter?

　　Next, I will introduce you to the difference in the material of the power adapter shell. If you know more about this kind of related information, you can also avoid some safety hazards to a large extent!

　　The power adapter shell is generally made of plastic materials, of course, some industrial power supplies use metal shells. The materials of our common power adapter shell mainly include ABS material, ABS+PC material, and pure PC material. In general, we only use these three materials. Let's introduce the differences between these materials one by one.

　　PC material

　　Pure PC material has ultra-high strength and elastic coefficient, and it can be used in a wide temperature range. (The general material of ABS can only be used at -25 degrees to 60 degrees). In addition, PC material has high transparency and free dyeing properties, so that The power adapter is very good in various colors. In addition, this material also has fatigue resistance, weather resistance, odorless, odorless, and harmless to the human body, which is in line with hygiene and safety.

　　ABS material

　　ABS material characteristics, first of all, low strength, not temperature resistant, under normal circumstances, the maximum use temperature can not exceed 60 degrees Celsius, this is a lot worse than PC materials, ABS is generally used in household appliances.

　　Synthetic material of ABS and PC

　　Taking the characteristics of the first two, it has excellent molding processing performance, good fluidity and high strength. ABS+PC material is easy to process, has good processing dimensional stability and surface gloss, easy to paint and color, and can also be used for secondary processing properties such as spraying metal, electroplating, welding and bonding. Due to the combination of the characteristics of ABS with the characteristics of its three components, it has excellent comprehensive performance and becomes one of the preferred plastics for electrical components, home appliances, computers and instruments.

　　In the choice of power adapter shell materials, pure PC materials and PC+ABS are basically the main ones. Although the cost will increase compared with the past, the price of power adapter will also be different, but from environmental protection and safety. Said, ABS is less and less suitable for the current market demand! So the power adapter manufacturers remind you, when choosing a power adapter, try to choose a large manufacturer to buy

Read recommendations:

72W desktop

power adapter AC 90v-264v input to DC 12V for CCTV LED strip, Router and more

AC-DC Power Module 10W High Power Switching Power Supply Board 90V-264V

EMC Problem Analysis of Power Adapter

12V power adapter control loop part