source:power adapter Popular:adapter release time:2021-10-19 09:22:20 Article author:sznbone
The function of the power adapter is to convert the high voltage of 220 volts in the home into a stable low voltage of about 5 volts to 20 volts that these electronic products can work, so that they can work normally, without it, it will bring a lot of our daily use. inconvenient. So can all power adapters be universal? The following power adapter manufacturers will analyze for you:
1. Different specifications of "power adapters" cannot be used universally. The key points are: ①, the voltage must be the same, otherwise it will burn the electrical appliances or fail to work; ②, the "output current" of the power adapter must be greater than that of the electrical appliances Working current, otherwise, the power adapter will "overcurrent" and burn out; ③, the interface of the power adapter and the electrical appliance must match, otherwise it cannot be connected. ④ The positive and negative polarity must be the same to avoid accidents.
2. The input specifications of general power adapters are AC 100-240V, 50-60Hz. This input range is universal, so don't worry. It mainly depends on the output voltage and current of the power adapter, and whether the size of the interface matches your equipment. For example, mobile phone chargers with 5V500mA can also be used with 5V 700mA, 800mA, 5V1A, etc. As long as the voltage is the same, the larger current can be compatible with the smaller current. It is best not to be too far apart.
Third, the power adapter cannot be used universally. There are three obstacles. The first is that the operating voltages of notebook computers of various manufacturers are different. IBM is 16V, most of COMPAQ is 18.5V, and some SONY models are 19.5V, which are not uniform. The second is that different notebook computers require different currents, ranging from 2A to 5.4A. Small machines require smaller currents, while larger machines require larger currents. The third is that the power adapter interfaces of notebook computers of various manufacturers are different, and it is difficult to use them universally. Therefore, there is no universal power adapter for all notebook computers.
Fourth, why the notebook power adapter can not be universal
The laptop power adapter is not universal. Have you ever encountered this situation? In some occasions, the laptop battery power supply is insufficient, and there is no power adapter, and the work is still a little bit unfinished. This situation is very anxious and embarrassing. . Some friends may try to borrow other people's laptop power adapters at this time, but everyone should be aware that different brands of laptop power adapters cannot be universal, at least for now.
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