The power adapter is what use, some problems of the power adapter, and the working principle of explanation!

by:MOSO     2020-03-17
The power adapter, also called external power supply ( Switch power adapter) , it is a small portable electronic devices and electronic appliances, the power supply change of implement, it is a result of in real life, electronic devices are usually cannot be used directly for household electricity, for home use is 220 v power supply voltage, the voltage of power supply and common electronic products generally required for about 5 v to 20 v. Therefore, it is very important to the function of the power adapter is ( Module power supply) , especially if you go to the United States and other countries, voltage and different in our country, it is more need for 220 v to 110 v transformer. With it, we can be convenient and safe use of these electronic products. So, what is the function of the power adapter? The composition of the power adapter and applications ( Working principle of the power adapter) The power adapter is common in mobile phones, LCD display and laptop computers and other small electronic products. Generally consists of shell, power supply transformer and rectifier circuit, according to its output type can be divided into the ac and dc output; According to the connection mode can be divided into the plug wall and desktop type. Used in telephone composite aircraft, game consoles, the language repeater equipment, walkman, notebook computers, cellular phones, etc. Computer with the power adapter, power adapter is widely used in industrial automation control, military industry equipment, scientific research equipment, LED lighting, industrial control equipment, communications equipment, electrical equipment, instrumentation, medical equipment, semiconductor refrigeration and heating, air purifier, electronic refrigerator, LCD, LED lamps and lanterns, communications equipment, audio and video products, security, computer case, digital products and equipment, and other fields, and in these areas have the effect that cannot ignore. So what is the role of the power adapter? The role of the power adapter in general, the power adapter function is a transformer and rectifier. Home is a 220 v ac, and our land for computer is dc 12 v ( As if) , so can be sure the power adapter is a transformer and rectifier. Adapter is transformer, so we should all know, ac 220 v through a transformer transformer, through the variable dc rectifier, here is consumption, the consumption will be transformed into heat, so the power adapter will be fever is normal. Made in silicon steel sheet, transformer after electrify, produce magnetic flux, flux between silicon steel sheet will incur to produce force, to produce buzzing sound, this is normal. But far the voice is not normal, the reason a lot of: 1, the ac voltage is not stable. 2, chip breakage. 3, turn-to-turn short circuit. 4, component damage and so on. By the way, the role of adapter is to convert alternating current into direct current electronics power adapter are generally built in space is large, generally adapters are not small volume, small volume of the machine is external, in order to save space, and change is convenient, mains adapter, put inside the machine voltage is higher, more dangerous to use several problems that should pay attention to the power adapter in the ac adapter ( The following adapter) Usually has several label on is to be aware of. First, it's the adapter model, such as models is SOY - of the adapter 1200100, it tells us a few information, is its manufacturer, wattage, etc. , SOY beginning general is # # company code of 1200100 is that this adapter is 12 w, 0500200 is 10 w. Second, is the INPUT adapter ( Input) , gm in China usually is 100 - 240 v ~ 50 - 60 hz, this suggests that this adapter can be 100 v - 240 v voltage under the normal work; Third, the adapter is the OUTPUT ( Output) , two Numbers can be very fast to calculate the adapter wattage, this adapter, for example, the voltage current 1 a = 12 w 12 v * ( Power) , indicating that the power supply is 12 w adapter. Most of the laptop power adapter can be used for the 100 ~ 240 v alternating current (ac) ( 50/60Hz) 。 Basically, most of the laptops are the external power supply, with a power cord and host connection, so can reduce the volume and weight of the host, only a handful of the electricity supply models built within the host. Have a nameplate on the power adapter, marked on the power, input and output voltage and power flow indicators, such as paying special attention to the range of input voltage, this is the so-called & other; Travel power adapter & throughout; , if only to the mains voltage 110 v state, this feature is very useful, some of the gray notebook computers are sold only in country of origin, there is no such design is compatible with voltage, even only a single input voltage 110 v, in our country under the voltage of 220 v mains plug in will be burned. Is the role of the power adapter can convert the high voltage of work at home stable low voltage, so they can work normally. Instead it will bring a lot of inconvenience to our daily use. This paper mainly introduces the function, composition and application of the power adapter and the several problems that should pay attention to when using the power adapter. Organization of data from the network.
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