surge impedance

简明释义

特件阻抗

英英释义

例句

1.A mismatch in surge impedance 浪涌阻抗 can lead to signal reflections in communication lines.

在通信线路中，浪涌阻抗 surge impedance 的不匹配可能导致信号反射。

2.The surge impedance 浪涌阻抗 of a transmission line affects its voltage distribution.

输电线的 浪涌阻抗 surge impedance 影响其电压分布。

3.The calculation of the surge impedance 浪涌阻抗 is crucial for designing efficient transmission lines.

计算 浪涌阻抗 surge impedance 对于设计高效的输电线路至关重要。

4.Engineers must consider the surge impedance 浪涌阻抗 when analyzing the stability of power systems.

工程师在分析电力系统的稳定性时必须考虑 浪涌阻抗 surge impedance 。

5.To minimize losses, it is important to match the surge impedance 浪涌阻抗 of the cable with the load.

为了最小化损耗，将电缆的 浪涌阻抗 surge impedance 与负载匹配是很重要的。

作文

The concept of surge impedance is fundamental in the field of electrical engineering, particularly when dealing with transmission lines and wave propagation. To understand this concept, we must first explore what impedance means in general. Impedance is a measure of how much a circuit resists the flow of electric current when a voltage is applied. It combines both resistance and reactance, which makes it a crucial factor in AC circuits. When we talk about surge impedance, we are specifically referring to the characteristic impedance of a transmission line when it is subjected to transient conditions, such as voltage surges or electromagnetic pulses.In practical terms, surge impedance helps engineers predict how electrical signals will behave when they encounter changes in the circuit, such as when a switch is flipped or when lightning strikes. This is important because improper management of these surges can lead to significant damage to electrical components and systems. For instance, if the surge impedance of a line does not match the source or load impedance, reflections can occur, leading to voltage spikes that may destroy sensitive equipment.The mathematical expression for surge impedance can be derived from the properties of the transmission line. It is given by the formula Z_s = √(L/C), where Z_s is the surge impedance, L is the inductance per unit length, and C is the capacitance per unit length. This relationship shows that the surge impedance is dependent on the physical characteristics of the transmission line itself. Engineers use this formula to design lines that minimize reflections and optimize signal integrity.Understanding surge impedance is also crucial for the protection of electrical systems. Surge protectors and other devices are designed to manage the effects of voltage surges, ensuring that equipment operates safely and efficiently. By knowing the surge impedance of a system, engineers can better select and position these protective devices to mitigate potential damage.Moreover, the concept of surge impedance extends beyond just electrical engineering; it has applications in telecommunications, where data signals travel over various media. In these cases, ensuring that the surge impedance is correctly matched can enhance data transmission quality and reduce errors.In conclusion, surge impedance is a critical concept that underpins many aspects of electrical and electronic engineering. Its importance cannot be overstated, as it plays a vital role in the design, protection, and efficiency of electrical systems. As technology continues to evolve, the understanding and application of surge impedance will remain essential for engineers working to create reliable and robust electrical infrastructures.

“冲击阻抗”这一概念在电气工程领域中是基础，尤其是在处理传输线和波动传播时。要理解这个概念，我们首先必须探讨阻抗的意义。阻抗是指在施加电压时，电路对电流流动的抵抗程度。它结合了电阻和电抗，这使得它在交流电路中成为一个至关重要的因素。当我们谈论“冲击阻抗”时，我们特别指的是在瞬态条件下（如电压冲击或电磁脉冲）传输线的特征阻抗。在实际应用中，“冲击阻抗”帮助工程师预测电信号在电路中遇到变化时的行为，例如，当开关被切换或雷电击中时。这一点非常重要，因为不当管理这些冲击可能会导致电气组件和系统的重大损坏。例如，如果线路的“冲击阻抗”与源或负载阻抗不匹配，就会发生反射，导致电压尖峰，可能会摧毁敏感设备。“冲击阻抗”的数学表达式可以从传输线的特性中推导出来。它由公式Z_s = √(L/C)给出，其中Z_s是冲击阻抗，L是单位长度的电感，C是单位长度的电容。这个关系表明，冲击阻抗依赖于传输线本身的物理特性。工程师利用这个公式设计线路，以最小化反射并优化信号完整性。理解“冲击阻抗”对于电气系统的保护也至关重要。浪涌保护器和其他设备旨在管理电压冲击的影响，确保设备安全高效地运行。通过了解系统的“冲击阻抗”，工程师可以更好地选择和定位这些保护设备，以减轻潜在的损害。此外，“冲击阻抗”的概念不仅限于电气工程；它在电信中也有应用，数据信号通过各种介质传输。在这些情况下，确保冲击阻抗正确匹配可以提高数据传输质量并减少错误。总之，“冲击阻抗”是支撑电气和电子工程许多方面的关键概念。它的重要性不容低估，因为它在电气系统的设计、保护和效率中发挥着重要作用。随着技术的不断发展，对“冲击阻抗”的理解和应用将继续是工程师们创建可靠和稳健的电气基础设施的必要条件。