source:Charger Popular:adapter release time:2021-04-24 10:02:07 Article author:sznbone
Nowadays, laptops, mobile phones, PSPs and other electronic products have enriched our lives. But these digital products often need to be charged, and the chargers of many digital devices are special. So what should you pay attention to when choosing 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 a bit redundant.
2. Output voltage: It is best to have the same output voltage. If there is no accurate, 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 not be able to charge, start or even burn.
3. Current: Many people think that the current should be exactly the same, otherwise too much current will flow into our digital equipment and cause damage to the digital equipment. In fact, this understanding is wrong, and we can explain this problem based on the physical knowledge we have learned.
According to Ohm's law, in the same circuit, the current in the conductor is proportional to the voltage across 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. In other words, the digital device itself determines the current of the line, not the maximum output current of the charger itself.
Everyone knows that mobile phones have many different types of interfaces, and the corresponding mobile phone charger interfaces are different depending on the interface. So, do you know the types of mobile phone charger interfaces? Follow the charger manufacturer to learn about it!
1. Micro USB interface: This interface is a portable version of the USB 2.0 standard and can only be inserted on one side. Only supports OTG function, compatible with USB 1.1 and USB 2.0. This kind of USB interface can only be inserted into one side of the mobile phone, and is gradually replaced by the USB-C interface.
2. USB Type C interface: It can be inserted on both sides, which is more convenient. It should be noted that even if the USB-C interface is used, the transmission speed is not necessarily USB3.0. At present, USB-C has gradually become a mobile device The version of the mainstream interface type.
3. In addition to Android phones and the common USB-C interface, Apple phones currently use the Lightning interface, which is a step ahead of USB-C to achieve a double-sided pluggable design. And for this, an MFi certification set up specifically for iOS devices has been formed. On the latest iPad Pro, Apple has adopted the USB-C interface for the first time.
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