source:Industry News Popular:adapter release time:2021-05-10 11:33:32 Article author:sznbone
In recent years, the total profit of China's power supply industry has shown a dynamic trend. After a decline in 2013, it has grown for three consecutive years from 2014 to 2016, reaching 10.24 billion yuan in 2016. In the past three years, due to the development of new energy vehicles and distributed power stations, the profitability of the industry has continued to improve.
my country's power cord market has a wide range of products produced by power cord manufacturers. In recent years, product standards and quality management have been relatively scattered. Some power products are facing greater cost pressure, and some products have seen price increases. On the whole, giving products more added value has become the focus of attention of enterprises.
In the long run, the development of power cord manufacturers in my country's power supply industry is improving. According to historical data of the power supply industry and analysis of the impact of related factors, the Prospective Industry Research Institute predicts that by 2022, my country's power supply industry will reach 314.5 billion yuan in demand.
The shielding layer of shielded cables produced by power cord manufacturers is mainly made of copper, aluminum and other non-magnetic materials, and the thickness is very thin, much less than the skin depth of the metal material at the frequency of use (the so-called skin effect refers to the distribution of current in the cross-section of the conductor As the frequency increases, it tends to be distributed on the surface of the conductor. The higher the frequency, the smaller the skin depth, that is, the higher the frequency, the weaker the penetration ability of electromagnetic waves. The effect of the shielding layer is mainly not due to the metal itself on the electric field and magnetic field. It is caused by the reflection and absorption of the shielding layer, but the grounding of the shielding layer. Different forms of grounding will directly affect the shielding effect.
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