释义 |
DictionarySeebattery chargerUSB charger
USB chargerA power adapter that generates the 5 volt DC standard required by USB. The amperage varies, typically from .07A to 2.4A. The charger plugs into an AC outlet, and a USB cable plugs into the charger. USB ports on computers have an upper limit of 500 milliamps; however, USB chargers that come with cellphones and other devices handle one or more amps. The devices sense when they are connected to a computer versus the charger and regulate their current draw. See power adapter and USB.
| USB Chargers |
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USB chargers connect to the cable via a Type A USB socket. Geared to the device, the cable has a smaller plug at the other end (see Mini USB, Micro USB and USB Type C). |
| What's Inside |
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Open up a typical charger and you find a couple of chips and several discrete components. |
| Chargers Are Everywhere |
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Passengers can charge their devices by plugging them into this USB port on the back of the seat in front of them. | MedicalSeeUSB |