So the role of the power adapter is crucial (modular power supply), especially if you go to the United States and other countries, the voltage is different from ours, then the need for 220V to 110V transformer.
With it, we can use these electronic products conveniently and safely. So, what is the role of the power adapter?
Composition and application of power adapter (power adapter working principle)
Power adapter is commonly found in cell phones, LCD monitors and laptops and other small electronic products. Generally by the shell, power transformer and rectifier circuitry, according to its output type can be divided into AC output type and DC output type; according to the connection can be divided into wall and desktop type. Widely used in telephone sets, game consoles, language repeaters, Walkman, notebook computers, cellular phones and other equipment.
Power adapter for computer
Power adapter is widely used in industrial automation control, military equipment, scientific research equipment, LED lighting, industrial control equipment, communication equipment, electric power equipment, instrumentation, medical equipment, semiconductor refrigeration and heating, air purifiers, electronic refrigerators, LCD monitors, LED lamps and lanterns, communication equipment, audio-visual products, security, computer cases, digital products and instruments. Digital products and instruments and other fields, and in these areas have a role that can not be ignored. So what is the role of the power adapter?
The role of the power adapter
Generally speaking, the role of the power adapter is the transformer and rectifier. Home AC is 220v, and our computer land is DC 12v (as if), so, can be sure that the power adapter is a transformer cum rectifier. Adapter is a transformer, then we should know, AC 220v through the transformer voltage, through the rectifier into DC, here is the consumption, and these consumption will be transformed into heat, so the power adapter will heat is also normal. Transformer is made of silicon steel sheet, transformer energized, resulting in magnetic flux, magnetic flux will incur between the silicon steel sheet to generate the role of force, thus generating buzzing sound, which is normal. But too hot earth sound is not normal, due to many reasons: 1, AC voltage instability. 2, chip damage. 3, turn-to-turn short circuit. 4, component damage, etc.. By the way, the role of the adapter is to convert AC into DC electronic products
Power adapter space is generally built-in, general adapter volume are not small, small volume of the machine is external, in order to save space, the second replacement is also convenient, the adapter with the utility, the voltage is relatively high, put inside the machine is more dangerous