First, is the socket of usb interface good?
Not so good. 1, USB socket is actually a 5V power supply, and its electronic components have a long service life. Long-term live working, the safe life is less than 5 years. 2. Any power supply will consume electricity when there is no load. This USB charging socket has no switch and will always consume power. 3. The output current of the charger is usually designed for specific mobile phones and tablet computers to meet their different current requirements. The voltage of some mobile phones is not necessarily 5V. ? Using USB socket to supply power, the current and voltage may not match.
Second, how to choose a good quality usb interface socket?
1. Try to choose a powerful USB socket, such as intelligent power distribution, which is to intelligently identify the power and voltage required by electrical appliances, such as mobile phones and tablet computers, and stably transmit power. )
2. Select usb socket with button or automatic on-off function. A USB socket without on-off function will keep running all the time, which is easy to heat up and has potential safety hazards. So, choose a USB socket with a button. The microswitch of USB socket has a standard automatic on-off word except the door type, and these technologies are all patented products of Jin Feng.
3. Try to choose USB socket with indicator light. The USB socket with indicator lamp can predict whether the circuit is normal when plugged in and whether the plug wire is in normal contact, thus avoiding potential safety hazards (myth: the USB socket without indicator lamp only shows the running state of USB when plugged in, not the state when disconnected. Simply put, when disconnected, the indicator light does not light up, but the USB is still running, just automatically switching on and off. Reference materials can be found in. .........
4. Look at the material. Generally, pc fireproof material should be selected, and the socket should not be loose or too tight, while the copper sheet is yellow, blue, red, tin, phosphor bronze or high-precision phosphor copper sheet. It is best to integrally form the copper sheet without welding and rivets.
5. Look at the price, remember not to be lucky, be greedy and cheap. Safety comes first. Generally, the five-hole socket is around 20 yuan, and the USB will cost more 10 yuan. You can refer to the price of big-name USB sockets, which is too low and may have security risks. Generally speaking, the price is related to the output current. The current price of 2a is higher than that of1a.
6. It is best to choose a brand switch socket.
Suggested brands for usb sockets (some big brands are of good quality, but they are straight-through, so they are not recommended). Because there are fewer brands with USB sockets, it will not be arranged here.
With buttons: Bull, Siemens, International Electrician? , Schneider
Automatic on/off: Jinfeng (Note: At present, only Jinfeng brand can automatically turn on/off the microswitch, because this is a patented product unique to Jinfeng brand.
As the name implies, the USB interface socket recommended above is also different from other common multi-purpose patch panels. On the one hand, the interface design enables them to charge multiple mobile phones with different interfaces with one data cable, thus avoiding the visual confusion caused by too many wires on the desk. On the other hand, some sockets with interfaces also support intelligent classified power failure, which also saves more electricity and has more environmental protection performance value.