USB chargers are currently the most frequent devices which are found in charging Smartphones and tablets. The items are of three main specifications: USB 1., 2., and 3.. From the three, USB 2. is regarded as the common.
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USB AdapterIn the USB network, there is certainly always the host as well as the device. For example, if you are using computer to charge your phone, you PC becomes the host and you phone becomes the device.
The charger becomes the host and your tablet or phone becomes the device if you are using a wall charger. In most times, power flows from the host to the device.
If you look closely, you will see that a USB socket has four pins. The USB cable also offers four wires. The interior pins carry data (D and D-) while the outside pins provide power.
Charging process
It's good to note that different USB ports charge the devices connected to them differently. For example, you will find that one port charges your phone fast while another port charges exactly the same phone very slowly.
There are two factors that determine the pace where your device charges over USB: the maximum amperage from the USB socket or wall charger and exactly how your device requires power from the charger.
All chargers have maximum amperage that is usually between 500 1 and milliamps.5 amps. Typically a PC has 500mA while the max amperage of any wall charger varies from one device to another one. Although, this is actually the case, the amperage of wall chargers is normally between .2 and 5A.1A.
The way your device negotiates with the charger greatly determines the way your device charges. Whenever you plug your device to the wall charger or charging socket, the USB controller in your device communicates using the USB controller connected to the charger.
The device reads the voltage flowing across the USB pins and from the data the device decides on the amount of amperage that it should draw if there is no controller.
Can a USB device blow up during charging?
The answer is No. You are able to plug any USB device into any USB cable and into any USB port without the problems and your device won't blow up. Which means that you are able to connect a Smartphone which came with a 900mA charger into a 2100mA as well as the device won't blow up.
According to experts, connecting your device to a higher power source doesn't result to blowing up of the device, but instead speeds up the rate at which the battery charges. - USB Adapter