skin effect

简明释义

囚效应

英英释义

例句

1.The skin effect in AC circuits causes current to flow primarily near the surface of the conductor.

交流电路中的表面效应导致电流主要在导体的表面流动。

2.The skin effect increases resistance at higher frequencies, which can impact performance.

在更高频率下，表面效应增加了电阻，这可能影响性能。

3.To minimize the skin effect, multi-stranded conductors are often used.

为了最小化表面效应，通常使用多股导体。

4.Engineers must account for the skin effect when designing high-frequency circuits.

工程师在设计高频电路时必须考虑表面效应。

5.In power transmission, the skin effect can lead to energy losses.

在电力传输中，表面效应可能导致能量损失。

作文

The concept of the skin effect is crucial in understanding how alternating current (AC) behaves in conductive materials. When an AC signal passes through a conductor, it does not distribute evenly across its entire cross-section. Instead, the current tends to flow more near the surface of the conductor, leading to a phenomenon known as the skin effect. This effect becomes more pronounced at higher frequencies, where the depth of penetration of the current into the conductor decreases. As a result, the effective area through which the current flows is reduced, increasing the resistance and affecting the efficiency of electrical systems.To illustrate the skin effect, consider a copper wire carrying an AC signal. At low frequencies, the current may flow uniformly throughout the wire. However, as the frequency increases, the current begins to concentrate near the outer surface of the wire. This concentration of current at the surface reduces the effective cross-sectional area available for current flow, which in turn increases the overall resistance of the wire. Engineers must take this into account when designing circuits that operate at high frequencies, such as radio transmitters and receivers.The skin effect has significant implications for various applications in electrical engineering. For instance, in high-frequency transmission lines, the increased resistance due to the skin effect can lead to power losses and signal degradation. To mitigate these issues, engineers often use conductors with larger diameters or specialized designs, such as litz wire, which consists of many thin strands of wire insulated from each other. This construction helps to minimize the impact of the skin effect by allowing more surface area for current flow.In addition to its impact on conductors, the skin effect also plays a role in electromagnetic fields and wave propagation. Understanding how the skin effect influences the behavior of waves in different media is essential for designing antennas and other communication devices. For example, the design of antennas often requires careful consideration of the skin effect to ensure efficient radiation of signals.Furthermore, the skin effect is not limited to metallic conductors; it can also occur in other materials, such as semiconductors and even biological tissues. In medical applications, for example, the skin effect can affect how electrical signals are transmitted through the body, which is important for techniques like electrocardiograms (ECGs) and transcutaneous electrical nerve stimulation (TENS).In conclusion, the skin effect is a fundamental phenomenon that affects the behavior of alternating currents in conductors. Its implications extend beyond simple electrical resistance, influencing the design and efficiency of various electrical and electronic systems. By understanding the skin effect, engineers can develop better solutions for high-frequency applications, ensuring optimal performance and reliability in modern technology. As we continue to advance in the field of electrical engineering, recognizing and addressing the challenges posed by the skin effect will remain essential for innovation and progress.

“skin effect”的概念在理解交流电（AC）在导电材料中如何行为方面至关重要。当交流信号通过导体时，它并不会均匀地分布在整个横截面上。相反，电流更倾向于流动在导体的表面附近，导致了一个被称为skin effect的现象。这个效应在高频率下变得更加明显，此时电流渗透到导体内部的深度减少。因此，有效的电流流动面积减小，增加了电阻，并影响电气系统的效率。为了说明skin effect，我们可以考虑一根载有交流信号的铜线。在低频率下，电流可能会均匀地流过整根导线。然而，随着频率的增加，电流开始集中在导线的外表面。这种电流在表面的集中减少了可用于电流流动的有效横截面积，从而增加了导线的整体电阻。工程师在设计高频率工作电路时必须考虑这一点，例如无线电发射器和接收器。skin effect对电气工程中的各种应用具有重要影响。例如，在高频传输线中，由于skin effect导致的电阻增加可能导致功率损耗和信号衰减。为了减轻这些问题，工程师通常使用直径较大的导体或专门设计的导线，例如Litz线，由许多相互绝缘的细导线组成。这种结构有助于通过提供更多的表面积来最小化skin effect的影响。除了对导体的影响，skin effect还在电磁场和波传播中发挥作用。了解skin effect如何影响不同介质中波的行为对于设计天线和其他通信设备至关重要。例如，天线的设计通常需要仔细考虑skin effect，以确保信号的有效辐射。此外，skin effect不仅限于金属导体；它也可能发生在其他材料中，例如半导体甚至生物组织。在医学应用中，例如，skin effect可能影响电信号在体内的传输，这对于心电图（ECG）和经皮神经电刺激（TENS）等技术非常重要。总之，skin effect是一个基本现象，影响交流电在导体中的行为。它的影响超越简单的电阻，影响各种电气和电子系统的设计和效率。通过理解skin effect，工程师可以为高频应用开发更好的解决方案，确保现代技术的最佳性能和可靠性。随着我们在电气工程领域的不断进步，认识和解决skin effect所带来的挑战将继续是创新和进步的关键。