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 used 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. Household AC power 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 be hot 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 power into DC electronic products
Power adapter space is generally built-in, the general adapter volume is not small, small volume of the machine is external, in order to save space, the second replacement is also convenient, the adapter with the mains, the voltage is relatively high, put inside the machine is more dangerous
Use of power adapters Points to note
In the power adapter (hereinafter referred to as the adapter) above the label will generally have a few items are in need of attention.
First, is the adapter's model number, for example, the adapter's model number is XVE-120100, which tells us a few information, that is, its manufacturer, wattage, etc., XVE is generally the beginning of the ## ## company code, 120100 is to show that this adapter is a 12W, 050200 is a 10W;
Second, is the adapter's INPUT (input), in China is generally 100-240V ~ 50-60Hz, which indicates that this adapter can be in the 100V-240V voltage below the normal work;
Third, is the adapter's OUTPUT (output), the two numbers can be very quickly calculate the adapter's wattage, for example, the adapter's wattage is 12W, 050200 is 10W.
The third is the OUTPUT of the adapter, the two numbers can be quickly calculated to determine the wattage of the adapter, for example, this adapter, voltage 12V*current 1A=12W (power), it means that the power supply is a 12W adapter.
Most laptop power adapters can be suitable for use with 100~240V AC (50/60Hz). Basically, most laptops have the power supply external and connected to the mainframe with a power cord, which reduces the size and weight of the mainframe, and very few models have the power supply built into the mainframe.
There is a nameplate on the power adapter that indicates the power, input and output voltages, and power flow rate, etc. Pay special attention to the range of input voltages, which is known as the "travel power adapter", and this feature is useful if you go to a country where the mains voltage is only 110V. Some laptops are only sold in the country of origin, there is no such compatible voltage design, or even only a single input voltage of 110V, in our country's 220V mains voltage will burn when plugged in.
Summary
The role of the power adapter is to convert the high voltage at home into a stable low voltage that can work, so that they can work properly. And not using it will bring a lot of inconvenience to our daily use. This article mainly introduces the role of the power adapter, composition and application, as well as in the use of power adapters need to pay attention to a few points.