The power adapter function and principle of the power adapter?

by:MOSO     2020-03-17
In reality, we come into contact with the power adapter is switching power supply. Switching power supply is to point to by the modern electronic technology, control switch tube opened and shut off time ratio, to maintain stable output voltage of a power supply, power adapter, switching power supply by pulse width modulation (commonly 脉宽调制) Control IC and MOSFET, benefits: high conversion efficiency, small volume, can work in a wide voltage range. In order to help users solve & other; What role does the power adapter and principles? ” Related problem, moso technology to & other; What role does the power adapter and principles? ” Organize the relevant solutions. 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. So the action of the power adapter is vital, especially if 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. 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. With it, we can be convenient and safe use of these electronic products. 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 power adapter function: it 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. The adapter is the transformer, we should all know, ac 220 v through a transformer transformer, through the variable dc rectifier, here is consumed, and 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, the damage of components. Is widely used in consumer electronics, to provide the output power of most of them are within the 100 watts, rapidly growing market demand. Such as electric bicycle battery chargers, small size LCD TV, laptop computer, printer, DVD player and set-top boxes are used, etc. Early power adapter are mostly adopted linear transformer, with the consumer electronics for power adapter is high efficiency and wide input voltage range of requirements, as well as copper, iron, and the increase of labor costs, this kind of power adapter inside the original linear transformer were gradually replaced by the switching power supply. This article mainly introduced the principle and application of the role of the power adapter, a few problems. The continuous development of science and technology progress, all kinds of scientific research project application practice increased year by year, demand for the power adapter for its accuracy, performance, specifications, varieties, type, size, etc, have put forward many new requirements, the existing power adapter already can't meet the current needs, research and development is suitable for many kinds of new type power adapter has become an objective demand, and its social and economic benefits are significant, brighter prospect of market.
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