Adapter Input Voltage Range
The adapter is a small portable electronic device and electrical and electronic power conversion device, usually by the shell, power transformers and rectifier circuit, the output can be divided into AC output type and DC output type; by connecting it can be inserted into the wall and desktop. Wide support on the phone screen, game consoles, language repeaters, Walkman, laptops, cell phones and other devices.
Adapter (hereinafter referred to as adapter) above generally have several labels need attention. First, the adapter model, such as this adapter model XVE-120100, it tells us some of the information, Adapter its manufacturer, the main parameters, XVE company in the beginning of the General Assembly ## code, 120100 is to explain this adapter 12W, and 10W Is 050200; second is the adapter input (input), usually in China is generally 100-240V ~ 50-60 Hz, which shows that the adapter can be less than 100V-240V voltage to work properly; the third is the adapter output Output), the two numbers can be quickly calculated by the wattage of the adapter, such as the adapter, the voltage 12V * current 1A = 12W (power), indicating that the power supply is 12W adapter.
Most laptop adapters are suitable for 100 ~ 240V AC (50 / 60Hz). Basically, most of the external power supply is connected to the power line and the host computer connected to the portable computer, Adapter it can reduce the size and weight of the host, only a very small number of models built into the host power.
In the adapter above the marked power supply, input and output voltage and current values and other indicators of the nameplate, with particular attention to the input voltage range, which is the so-called "travel adapter" if the utility voltage is only 110V when the country is very useful Some of the parallel notebooks are only selling the origin, there is no such voltage compatible with the design, Adapter 110V even with only a single input voltage, 220V plug in our power supply voltage will burn.
10 ~ 12W AC - DC power plug adapter series single output power supply
First, the adapter (hereinafter referred to as the power) of the rated voltage and the average of the current First, the nominal voltage of the general power supply refers to the open output voltage, which is not connected to any external load, no current output voltage, it is understood that the voltage is the upper limit of the output voltage of the power supply.
In the case of a power regulator for internal use of active components, Adapter even if the supply voltage fluctuates, the output is a constant value, such as general small transformers on the market, such as Walkman and power supply, and if the power supply fluctuates, the output of the power supply will not follow fluctuation.
Usually true no-load voltage general adapter is not necessarily the same as the nominal voltage, because the electronic components of the characteristics can not be exactly the same, so there is a certain error, the smaller the error, the consistency required for the production of electronic components high cost , So the price will be more expensive.
In addition, relative to the rated current value, regardless of any power supply has a certain resistance, so when the output current of the power supply, will produce a drop in the internal pressure, resulting in two things, one is to generate heat, so the power will Heat, Adapter and the other is directed to the output voltage when the internal consumption is reduced.
Secondly, it is the same nominal voltage of the power supply, the output current is different and can not be used in the same book?
The supply voltage, the output current is different and can not be used in the same book. The basic principle is that the power rating of the rated current can be replaced by the power of the small rated current. Some people would expect to think that the power of the large nominal current will burn books, Adapter because the current big thing. In fact, how much current depends on the same load voltage, Oh, think of junior high school physics to know.
Switching power supply
When the load is high, the greater the current, when the book into the standby state, the smaller current books, large current supply with sufficient current margin. On the contrary, some people use the 56 watt 72 watt power, rather than the use of no problem, because the usual adapter designed to leave a margin, the load power must be less than the power supply, so this place is in general use is feasible, Adapter but The rest of the power supply power margin is small, once you pick up a lot of books peripherals, such as two USB hard drive, then the CPU at full speed, and then a base to the top drive full speed read the disk, plus at the same time to the battery charge, Dangerous, you should always feel your power is not already boiled eggs. So it is best not to use a small current power instead of high current power supply.
Three, exactly the same machine, others gentle force, I always hot, why?
Do not doubt your power problem, see what your books are doing, is not like the above said two USB hard drive, CPU running at full speed, hard drive read and write crazy, drive full speed to read the disk, while the battery, noisy local music, screen brightness The maximum charge, the wireless card has been detected the signal, etc., make good use of power management, according to the task of a reasonable adjustment of the work of the books is very important.