Widely used in telephone sub-machines, game consoles, language repeaters, walkmans, laptops, cellular phones and other equipment.
Computer power adapter
Power adapters are widely used in industrial automation control, military equipment, scientific research equipment, LED lighting, industrial equipment, communication equipment, power equipment, instrumentation, medical equipment, semiconductor refrigeration and heating, air purifiers, electronic refrigerators, liquid crystal displays, LED lamps , communications equipment, audio-visual products, security, computer chassis, digital products and instruments, and so on, and in these areas have a role to play. So what are the functions of the power adapter?
The role of the power adapter
In general, the power adapter acts as a transformer and rectifier. The household AC is 220v, and our computer land is DC 12v (as if it is), so we can be sure that the power adapter is a transformer and rectifier. The adapter is a transformer, then we should all know that the AC 220V is transformed by the transformer, and the DC is changed by the rectifier. Here, it is consumed, and these consumptions are converted into heat, so it is normal for the power adapter to heat up.
The transformer is made of silicon steel sheet. When the transformer is energized, magnetic flux is generated. The magnetic flux will cause a force between the silicon steel sheets to generate a click sound, which is normal. However, the sound of the earth is not normal, and there are many reasons: 1. The AC voltage is unstable. 2, the chip is damaged. 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 DC power electronics.
The power adapter space is generally built-in, the general adapter is not small, the small size of the machine is external, in order to save space, the second is also convenient to replace, the adapter for the mains, the voltage is relatively high, put the machine Internally dangerous