source:Industry News Popular:adapter release time:2021-12-08 09:30:06 Article author:sznbone
Many devices now have a USB interface, and some users use this interface to charge the device when there is no charger or the charger is inconvenient, although it can also have a certain effect in many cases. , But it must be known that this charging effect is very different from the switching power supply. This is mainly because of the different equipment, and the specific equipment is the reason for the existence of different power supply systems.
Desktop USB interface power supply charging effect
The most common host interface is the USB interface. On this interface, you can generally charge and copy data to your mobile phone memory. Generally, the USB interface power supply of a standard desktop computer is around +-12V. It can be seen how much the power supply difference between it and the standard charger is, but in the actual charging process of the mobile phone, we did not find the abnormality of our mobile phone. We found that the mobile phone can still be charged. Why? In fact, it is very simple, because there are also certain step-down protection measures inside the mobile phone, and when charging on the USB interface of the desktop computer, the step-down measures inside the mobile phone are actually activated, which can be completed similar to the USB charger However, it should be known that because the internal space of the mobile phone is very small, this part of the circuit is very imperfect. Once such a long period of time is charged, certain problems will still occur. For example, some users have found that similar charging During the process, the phone fever is very serious. This is not the development of the battery, but the heat dissipation of the step-down circuit inside the mobile phone.
The charging effect of the notebook USB interface is more pertinent
Although they are all the same machine, the voltage of the USB power supply interface of a desktop computer and a notebook is different. The USB power supply voltage of a notebook is about 5V, which is the most suitable charging voltage for general mobile phones. But it should also be known that some equipment does not have such a weak demand for voltage. It is obviously not suitable for these devices to use a laptop for charging, and it is obvious that the laptop is used as a mobile power source, which will also consume the power in the laptop to a large extent.
Although various other devices provide a USB interface, this interface is mostly used for data communication. I suggest that you still use a dedicated charger for charging.
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