ShenZhen Yinghuiyuan Electronics Co.,Ltd
Nowadays, laptops, mobile phones, PSP and other electronic products enrich our lives. But these digital products often need to be charged, and many digital devices have special chargers. So what should we pay attention to when buying a charger? Let's follow the charger manufacturer to understand it!
1. Interface: There must be the same interface, or you can connect the corresponding conversion interface, but this is redundant.
2, output voltage: it is best to have the same output voltage. If you don't have an accurate one, the difference between the output voltage and the original charger is within 5%, which is basically no problem. However, if the difference between the two output voltages is too large, the device will fail to charge, start, or even burn.
3. Current: Many people believe that the current should be exactly the same, otherwise too much current will flow into our digital devices and cause damage to them. In fact, this understanding is wrong, and we can explain it based on what we have learned about physics.
According to Ohm's law, in the same circuit, the current in the conductor is proportional to the voltage at both ends of the conductor and inversely proportional to the resistance of the conductor, that is, I=U/R.. When the voltage is constant, the current on the line depends on the resistance of the load, that is, the digital device itself determines the current on the line, not the maximum output current of the charger itself.
When we buy the charger, we also need to see whether the product has the corresponding certification, each country has a different certification. For example, in China, you can check whether there is a 3C mark. If necessary, you can check the authenticity on the CNCA website. When buying a charger, we may see a zigzag symbol, which means that the charger has double insulation protection, its security is better. In addition, it is also necessary to see whether the product has overload protection, short circuit protection and other functions.
September 10, 2024
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Privacy statement: Your privacy is very important to Us. Our company promises not to disclose your personal information to any external company with out your explicit permission.
