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The Composition And Application Of USB Chargers

Edit:Shenzhen Keyuantai Industry Co.,Ltd      Date:Aug 16, 2017

The Composition and Application of USB Chargers
USB Chargerss are common in small electronic products such as mobile phones, liquid crystal displays and laptops. Generally by the shell, power transformers and rectifier circuit, according to its output type can be divided into AC output and DC output type; according to the connection can be divided into wall and desktop.
The reality of the USB Chargers is mostly switching power supply. Switching power supply is a power supply that maintains a stable output voltage by means of modern electronic technology, which controls the time ratio of turn-on and turn-off of the switch. The switching power supply of the USB Chargers is generally composed of pulse width modulation (PWM control IC and MOSFET, High conversion efficiency, small size, can work in a wide voltage range. Lack of: failure occurs when the repair more difficult to interfere with the power supply circuit.
USB Chargers is widely used in industrial automation and control, military equipment, scientific research equipment, LED lighting, industrial equipment, communications equipment, electrical equipment, instrumentation, medical equipment, semiconductor refrigeration and heating, air purifier, electronic refrigerator, Lighting, communications equipment, audio-visual products, security, computer chassis, digital products and instruments and other fields, and in these areas have a role can not be ignored. So what is the role of USB Chargers?
In general, the role of USB Chargers is the transformer and rectifier. Home AC is 220v, and our computer is DC 12v (as if), so be sure that the USB Chargers is a transformer and rectifier. Adapter is a transformer, then we should be aware that AC 220v through the transformer transformer, through the rectifier to DC, there is a consumption, and these consumption will be converted into heat, so the USB Chargers will heat is normal.
Transformer is made of silicon steel, the transformer power, resulting in magnetic flux, magnetic flux will lead to the role of silicon steel between the force, resulting in buzzing sound, which is normal. But the sound of the earth is not normal, for many reasons: 1, AC voltage instability. 2, chip damage. 3, short circuit between turns. 4, component damage and so on. By the way, the role of the adapter is to convert AC power into direct current electronic products
USB Chargers space is generally built-in, the general size of the adapter is not small, small size of the machines are external, in order to save space, and second to replace the convenience of the adapter with the mains, the voltage is relatively high The inside of the machine is dangerous
In the USB Chargers has a nameplate, marked above the power, input and output voltage and current and other indicators, with particular attention to the input voltage range, which is the so-called "travel USB Chargers", if the mains voltage is only 110V , This feature is very useful, and some parallel notebook computers are sold only in the origin, there is no such compatible voltage design, or even only a single 110V input voltage, in our 220V mains voltage will be burned The
The role of the USB Chargers is to convert the home's high voltage into a stable low voltage that can work so that they can work properly. And without it will give us the daily use of a lot of inconvenience. This article mainly introduces the function, composition and application of USB Chargers, and the problems that need to be paid attention to when using USB Chargers.
 It can be seen, the use of USB Chargers is more extensive than not only in the mobile phone charging, many industries, USB Chargers is also a very wide range of applications
First, with the implementation of energy-saving emission reduction policies, LED-type energy-saving lamps have been accepted by the vast number of consumers, its bright level and energy-saving effect was people can. In this case, the use of power adapter will certainly be further increased. The country more than one hundred million people, the use of lighting is a huge number of USB Chargers use is also very large
Second, many home appliances have the presence of USB Chargers know that the use of computer LCD display, the role of USB Chargers is a lot of work for the huge electronic equipment in the conventional electricity voltage can not be used inside this must be used To the USB Chargers. The normal operation of the liquid crystal display is also inseparable from the USB Chargers.

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