The ac adapter power adapter types into which a few kinds?

by:MOSO     2020-03-16
Power adapter, also called external power supply, a small portable electronic devices and electronic power supply voltage transformation equipment, its role is to put the home of 220 v high voltage into the electronic products can work around 5 v to 20 v low voltage stability, so they can work normally. The power adapter is life and industrial production often used to electronics, electrical appliances, machinery, such as the provision of current power transformation equipment. In small portable electronic devices such as phones composite aircraft, game consoles, the language repeater, walkman, our common notebook computers, cellular phones, etc to the power adapter. So we often talk about the power adapter types into which a few kinds? For this aspect of the problem below to specific: under the understanding of the difference between the power adapter the two types of method mainly from the size, weight, the range of output voltage difference to make the difference. The ac adapter type is mainly divided into linear power supplies and switching power supply: 1, linear power supply: the alternating current through the transformer transformer, rectifier circuit dc voltage of the rectifier filter is not stable, to achieve high-precision dc voltage, voltage feedback circuit to adjust output voltage must be made. Advantages: the power mature technology, simple circuit, and there is no switch power supply with the interference and noise. Weakness: the voltage feedback circuit is working in the linear state, adjust the tube power consumption is large, low conversion efficiency, by using inductive transformer weight equipment. 2, switch power supply: the use of modern electronic technology, control switch tube opened and shut off time ratio, to maintain stable output voltage of a power supply, switching power supply by pulse width modulation (commonly 脉宽调制) Control IC and MOSFET advantages: high efficiency, small volume, can work in a wide voltage range. Weakness: the power circuit interference is bigger, the event of a failure maintenance is difficult. According to the advantages and disadvantages of the two is easy to distinguish. Basically see the volume, weight, output voltage range. Power adapter, chip IC scheme is adopted, the quality of the products according to the national standard production, voltage set completely according to customer requirements, power is only 0. 3 w - 120 w, specific parameters and requirements can inquire. This article mainly for everybody simple understanding of the power adapter types into which a few kinds of this concept, emphasizes to introduce the types and application of the power adapter.
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