The difference between the AC adapter and DC power supply
Currently we have a common router comes with an AC output power adapter is mostly DC output almost nothing. So exactly which one to communicate with the DC advantage of it? Australian rules appearance common AC power adapter (hereinafter referred to as AC) are usually accompanied by symbols AC, DC power adapter (hereinafter referred to as the DC power supply) is a DC. Internal AC adapter is mainly accomplished by converting the output of the power transformer, the DC adapter is through an internal rectifier circuit composed.
Currently on the router inside the common AC adapter has a copper (line package). Work, power consumption in the form of loss in wasted effort off the line package power supply input voltage range is very narrow, can not adapt to a variety of environments. The DC power supply is common adapter (such as mobile phone chargers, also known as DC switching power supply) is the internal IC chip through the rectifier filter circuit increases, the loss will be much lower. GME Technology Shenzhen Power Adapter power adapter we take a look at the difference between them:
Similarly 9V500mA DC switching power output specifications and the AC line power package. You can see that in the case of no load, the power loss of the DC power supply is only 0.49W, while AC has reached 1.59W. A difference of 1.59-0.49 = 1.1W. AC load loss is 1.59 / 0.49 = 3.24 times the DC power supply! Connected to the wireless router test, we can see that this gap continues to expand, the DC power supply plus the overall power consumption of the router is only 4.59W, but after AC power connected to the router has reached 6.06W. 6.06-4.59 = 1.47W. Compared to the load of 1.1W. And if the machine itself, the power consumption increases, this gap will continue to widen further. Thus, in the case of the same power, the DC switching power supply with small size, light weight, low loss, power density and so on. In particular, the switching power supply itself has a wide input voltage, high voltage accuracy, overcurrent, overvoltage, short circuit protection. It is because of the above advantages, so now most of the electronic products using DC power adapter solutions are switching power supply output.
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