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Application and function of power adapter

2015/11/2      view:


    Power adapter is also known as external Power supply (switching Power adapter), it is a small portable electronic equipment and electronic appliances of the Power supply voltage conversion equipment, wentong electronic xiaobian with search data, now with a simple understanding of the application and role of the Power adapter below.

    Application of 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 does a power adapter do?

    The role of the power adapter
    Generally speaking, the role of a power adapter is transformer and rectifier.Household ac is 220v, while our computer USES dc 12v(as if it were), so it is certain that the power adapter is both a transformer and a rectifier.Adapters are transformers, so we should all know that ac 220v through the transformer voltage, through the rectifier dc, there is consumption, and these consumption will be converted into heat, so the power adapter will heat is normal.Transformer is made of silicon steel sheet, transformer power on, the generation of magnetic flux, magnetic flux will cause the silicon steel sheet to produce a force between the action, resulting in a buzzing sound, which is normal.But too much ground sound is abnormal, there are many reasons: alternating current voltage instability;Chip damage;Short circuit between turns;Component damage and so on.By the way, the function of an adapter is to convert alternating current into direct current for electronic products.