With the continuous rise in the price of copper, there has been a series of products made of iron cores in the market when optical fibers have not yet become mainstream. Recently, a very popular post titled "Is the cable used to work?" The post mentioned that 1,2,3,6 in the twisted pair is copper wire, 4,5,7,8 is the iron wire, the copper wire is used to take data, the iron wire is used to Take the voice, seemingly normal use, in fact, can really replace the copper core? Cork Gasket Making,Gasket Cutter Machine,Cork Gasket Cutting Machine,Cork Gasket Cutting Tool Jinan Zhuoxing Intelligent Technology Co., Ltd. , https://www.zhuoxingcutting.com
Most netizens said that they could temporarily use it, but they did not support this practice because iron cores would replace the copper core. The following problems will occur:
1. The transmission distance of the iron core network cable is short. In terms of physical performance, the density of iron is lower than that of copper, the distance of data transmission is relatively short, and no copper transmission is fast. Moreover, using iron core cables may take longer to rust, which will directly affect the quality of the network and may cause the network to be intermittent.
2. Disturbance Everyone knows that twisted pairs use a pair of mutually insulated metal wires twisted together to resist part of the external electromagnetic interference. The two insulated copper conductors are twisted together at a certain density, which can reduce the degree of signal interference, and the electric wave radiated by each conductor during transmission is cancelled by the electric wave emitted from the other conductor.
In general, the stronger the twisted wire is, the stronger the anti-interference ability is, and if the iron core is used, the crosstalk and background noise cannot be reduced and the anti-interference performance is achieved. The iron core has a hard texture, and twisting of the twisted wire is not enough to cause large interference. If the transmission distance exceeds 20 meters, the signal of this kind of cable is very weak.
3, slow speed twisted pair A total of eight lines, eight lines of the wiring rules are useful 1236 lines, 4578 idle lines. As the netizens said, if the 4578 line is replaced with a core, it can be used. However, the electrical conductivity of iron is far worse than that of copper. Iron cores transmit data faster than copper cores. Therefore, the slow speed is a natural thing. As mentioned in the first point, it may cause the network to be intermittent.
4, the stability is not high copper thermal conductivity is good, iron is slightly inferior and cooling performance than copper, can not quickly stabilize. The use of iron cores to make network cables began to function normally for a period of time, but after a period of time it will become more and more unstable, resulting in many phenomena.
At the same time, some cable manufacturers use aluminum-core cables instead of copper cables in their production, and the quality of such cables is difficult to guarantee. Not only that, the cables on the market such as "copper clad aluminum", "copper clad iron", alloy fabrication or impure copper are difficult to meet.
Therefore, in everyday applications, we must pay attention to the selection of cables that use copper cores completely. If it is difficult to determine whether they are completely copper cables, they can be tested using cable network testers available on the market, but there are also users. The proposal can be tested in the simplest and straightforward way. It is to use iron absorption to test. If it can be sucked up, the core part of the cable is used as the iron core.
Of course, from the cost point of view, the price of this kind of cable is much cheaper than that of a complete copper core wire. In the case of a budget shortage, this cable can also be used. However, if the project is not large enough cables are needed, it will not save a lot of money. Therefore, in order to ensure the basic quality and speed, it is recommended to purchase the products of regular manufacturers. This will not only guarantee the follow-up services, but also ensure the quality of the products.