The power adapter is widely used in industrial automation control, military equipment, scientific research equipment, LED lighting, industrial equipment, communication equipment, electrical equipment, instrumentation, medical equipment, semiconductor refrigeration and heating, air purifier, electronic refrigerator, liquid crystal display, LED lighting, communication equipment, audio-visual products, security, computer chassis, the field of digital products and other instruments, and in these fields has a role can not be ignored. So what are the roles of the power adapter?
The function of power adapter
Generally speaking, the function of the power adapter is the transformer and the rectifier. Home alternating current is 220V, and our computer land is DC 12V, so it can be sure that the power adapter is transformer and rectifier. The adapter is the transformer, then we should know, through the exchange of 220V transformer, the rectifier DC, here is the consumption, and consumption of these will be transformed into heat, so the power adapter will heat is normal. Transformer is made of silicon steel sheet, the transformer is energized, resulting in magnetic flux, magnetic flux will lead to silicon steel between the role of force, resulting in buzzing sound, which is normal. But the sound of the earth is not normal, there are many reasons: 1, alternating current voltage instability. 2, chip damage. 3, turn to turn short circuit. 4, components damage and so on. By the way, the function of the adapter is to convert alternating current into direct current electronic products
The power adapter is usually built in a large space, the general adapter volume is not small, small volume of the machine are external, in order to save space, and the replacement is convenient, power adapter, a relatively high voltage, placed inside the machine is dangerous