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Mobile WebSiteWhen the alternating current through the wire, the current will focus on the wire surface flow through, so that the resistance of the wire increases, loss power also increases, this is the skin effect. The higher the frequency of current or voltage changes, the more significant the skin effect.
Skin effect is one of the most fundamental distortion processes in the signal line, and it may be the most unintended misunderstanding. Skin effect due to the different components of the conductor, the transmission of high-frequency signals have inconsistent phenomenon. Similarly, on obsolete harness conductors, the skin effect encourages the interaction of signal currents across multiple harnesses, causing harsh marks on the sound.
In order to weaken the skin effect, it is often used in high-frequency circuits to use multi-strand insulated thin wire braid instead of the same cross-sectional area of the thick wire, this multi-strand harness called pigtail.
Use skin effect, hollow copper wire can be used in high-frequency circuit instead of a new copper wire to save copper. Although its resistivity will be larger, but it does not affect the transmission performance, but also increase the tensile strength of the transmission line.
In industrial harness applications, the use of skin effects can be metal surface hardening. In addition, the skin effect is also one of the methods of electromagnetic shielding. The skin effect can prevent high frequency electromagnetic waves from penetrating into a good conductor to make an electromagnetic shielding device. This is also the reason that the cell phone signal is not good in the elevator.
