DC power line is a kind of wire used for DC power supply. The so-called DC power refers to the current whose size and direction do not change with time, also known as constant current. It is a closed conductive circuit composed of DC power supply and resistance. It is mainly composed of conductor, insulating layer, shielding layer and shelter layer. It is generally used for flashlight, small radio, mobile phone, MP3, electric mosquito racket and other electrical appliances. The DC power line generally has two lines, one is all black, the other is black, and there is a white solid line in the middle, of which the all black line is the negative pole and the other is the positive pole.
2、 What are the DC power lines used in?
DC power cord is a very common tool in life, but it is also an indispensable tool for many machines, instruments and tests. DC line is widely used in digital products, small household appliances, and testing. At present, the application of DC line is basically in power output and charging of various digital products and small household appliances. The function is simple but indispensable. It is the basic original in the electronic industry, so it is widely used.
1. DC output: the DC power line can transfer the switching power supply or transformer to other places through DC current, such as LCD, surveillance camera, notebook computer and equipment controller power supply.
2. Charging mobile phones and digital cameras: when we usually buy mobile phones, others will send a charger DC line. Using the DC line, in addition to our usual mobile phone charging, we can also use it to transfer data.
3. Camera: when uploading the pictures in the camera to the computer, people are always used to taking out the memory card. The simpler way is that we can actually use the DC power cord to make a transfer, which is not easy to damage the memory card in the camera, and we don't have to buy a card reader.
