With its high efficiency, low power consumption, small size and light weight, power adapter has basically replaced the old linear power supply as the development direction of regulated power supply. Power adapter has become a very common electronic product in our daily life. It is generally believed that it is only used in digital products such as mobile phones, computers and routers. In fact, it is also widely used in other aspects No matter energy or electric power, industrial control, transportation, water conservancy and other industries have been widely used. Power adapter will be an important development direction of energy and electric power industry and has become the mainstream product of modern regulated power supply
With the rapid development of modern science and technology, power adapter, as a new type of regulated power supply, is used more and more widely, including not only the power supply of instruments, measurement systems and computer systems, but also various consumer electronic products Electricity is an indispensable energy in today's society Electric power is indispensable in industrial control, rail transit, energy power, new energy vehicles, engineering machinery, military communication and other fields
Since the British physicist Faraday discovered the phenomenon of electromagnetic induction in 1831, the development or activity of electric energy has been closely related to human beings Modern society is not only satisfied with power consumption, but also has higher and higher requirements for power quality Different equipment and apparatus need different power sources and need to transform and control electric energy, such as AC and DC, control voltage, current and AC frequency To improve the quality and efficiency of electric energy, and put forward higher requirements for energy conservation and environmental protection
Electronic and digital products have filled our lives. The use of mobile phones, tablets and laptops is gradually increasing. At this time, the use of power adapters is also increasing It can be said that the market development of electronic and digital products has driven the development of power adapter industry The huge user group is the foundation of the development of the industry. Today, with the rapid development of science and technology, the explosive growth of various electronic products is bound to drive the vigorous development of ancillary industries. As the basis for the operation and use of these electronic products, the function of power adapter is irreplaceable. For the work of many electronic equipment, the conventional mains voltage cannot be used, and the power adapter must be used to convert it into the DC voltage required by instruments and equipment, For example, the normal operation of LCD is also inseparable from the power adapter
Power adapter technology is widely used In just a few decades, it has been widely used in various industries of human society and has played a positive role in promoting the scientific and technological progress and productivity development of human society With the implementation of international energy conservation and emission reduction policies, the former four and five levels of energy efficiency in the power adapter industry have been gradually replaced by the six levels of energy efficiency of new technologies. The power adapter has become more and more efficient and more power-saving. Especially with the explosive renewal and replacement of the lighting industry, LED energy-saving lamps have been accepted by the majority of consumers, and their brightness and power-saving effect are allowed by people In this case, the use of power adaptation will be further increased The lighting consumption of billions of people in the world is a huge number, and the consumption of power adapters is also very huge This means that the power adapter market will expand with the continuous expansion of the electronic product market, and the high-quality power adapter will become the first choice of consumers
About 60% of the world's electricity consumption is consumed by electric motors How to make the motor work in high efficiency is of great significance Power adapter can also be widely used in security camera, set-top box, router, light bar, massage instrument and other equipment As well as the power adapter widely used in industrial automation control, military equipment, scientific research equipment, industrial control equipment, communication equipment, power equipment, instruments and meters, medical equipment, semiconductor refrigeration and heating, air purifier, electronic refrigerator, liquid crystal display, LED lamps, communication equipment, audio-visual products, security, computer chassis, digital products and instruments, it is believed that the development prospect will be broader than now
Power adapter is the power supply conversion equipment of small portable electronic equipment and electronic appliances. It is generally composed of shell, power transformer and 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
Application of power adapter, power adapter is widely used in consumer electronic products. Most of the output power provided is less than 150 watts, and the market demand is growing rapidly Such as electric bicycle battery charger, small LCD TV, notebook computer, printer, DVD player and set-top box Most of the early power adapters used linear transformers. With the requirements of high efficiency and wide input voltage range for power adapters in consumer electronic products, and the increase of copper, iron and labor costs, most of the original linear transformers in this kind of power adapters were gradually replaced by switching power supplies
The development trend of power adapter power adapter first appeared in the mid-1980s. Toshiba, Japan, took the lead in applying switching power supply technology to the external power supply of notebook. Its initiative created a new page in the development history of power adapter and became the first independent notebook power adapter in the world, Because of the external power supply of switching power supply technology, the notebook does not need to consider that the heat generated by power conversion is accumulated in the notebook itself, and the power adapter is easy to carry, which effectively improves the commercialization and popularization of notebook computers
At present, the high frequency of power adapter has become its development direction. The high frequency makes the switching power supply miniaturized, and makes the power adapter enter a wider application field, especially in the field of high and new technology, which promotes the miniaturization and portability of high-tech products In addition, the development and application of power adapter is of great significance in energy conservation, resource conservation and environmental protection Power adapter is also developing towards green, miniaturization, digitization and integration Any product may be updated and eliminated, but the power adapter will only be more advanced in technology and will not disappear
