stray capacitance

简明释义

寄生电容

英英释义

例句

1.In high-frequency applications, stray capacitance 杂散电容 can lead to significant signal degradation.

在高频应用中，杂散电容 stray capacitance可能导致显著的信号衰减。

2.Testing revealed that the stray capacitance 杂散电容 was affecting the oscillator's frequency stability.

测试显示杂散电容 stray capacitance正在影响振荡器的频率稳定性。

3.The circuit design must account for stray capacitance 杂散电容 to ensure accurate signal transmission.

电路设计必须考虑到杂散电容 stray capacitance，以确保信号传输的准确性。

4.To minimize stray capacitance 杂散电容, keep traces short and avoid sharp bends in PCB layout.

为了最小化杂散电容 stray capacitance，应保持走线短且避免PCB布局中的急弯。

5.Engineers often use simulation tools to predict the effects of stray capacitance 杂散电容 on circuit performance.

工程师通常使用仿真工具来预测杂散电容 stray capacitance对电路性能的影响。

作文

In the world of electronics, understanding various phenomena is crucial for designing efficient circuits. One such phenomenon that engineers often encounter is stray capacitance. This term refers to the unintended capacitance that exists between conductive parts of a circuit or between a circuit and its surroundings. It can play a significant role in the performance of electronic devices, particularly in high-frequency applications. Stray capacitance can lead to signal degradation, unwanted coupling between components, and can even cause oscillations in sensitive circuits.The sources of stray capacitance are numerous. For instance, when two conductive elements are placed close to each other, an electric field is generated between them, resulting in a capacitive effect. This can occur in printed circuit boards (PCBs) where traces run parallel to one another, or in integrated circuits where various components are densely packed. The physical layout of a circuit board can significantly influence the amount of stray capacitance present, making careful design critical.One of the main challenges posed by stray capacitance is its unpredictable nature. Unlike designed capacitances, which can be calculated and accounted for, stray capacitance can vary based on environmental factors such as temperature, humidity, and even the presence of nearby objects. This variability can complicate circuit analysis and design, requiring engineers to adopt strategies to mitigate its effects.To minimize the impact of stray capacitance, engineers can employ several techniques. One common approach is to increase the distance between conductive elements whenever possible. By spacing out traces on a PCB or using shielding techniques, the capacitive coupling can be reduced. Additionally, utilizing ground planes can help to absorb some of the stray fields, thereby reducing the overall impact of stray capacitance on circuit performance.Another effective strategy involves the use of differential signaling. In this method, two complementary signals are sent along paired conductors. This technique can help cancel out the effects of stray capacitance since both lines will experience similar capacitive coupling to their surroundings. This approach is especially beneficial in high-speed digital communications where maintaining signal integrity is paramount.Moreover, simulation tools can assist engineers in predicting the effects of stray capacitance during the design phase. By modeling the circuit and analyzing the parasitic capacitances, designers can make informed decisions about layout and component placement, thereby reducing potential issues before the physical prototype is built.In conclusion, stray capacitance is a critical consideration in electronic design, especially for high-frequency applications. Its unpredictable nature can lead to various issues, including signal integrity problems and unwanted interference. However, through careful design practices, the use of differential signaling, and advanced simulation techniques, engineers can effectively manage and mitigate the impacts of stray capacitance. As technology continues to advance and devices become more compact, understanding and addressing stray capacitance will remain an essential aspect of electronics engineering.

在电子世界中，理解各种现象对于设计高效电路至关重要。工程师们经常遇到的一个现象是杂散电容。这个术语指的是电路中导电部分之间或电路与其周围环境之间存在的意外电容。它在电子设备的性能中起着重要作用，尤其是在高频应用中。杂散电容可能导致信号衰减、组件之间的不必要耦合，甚至在敏感电路中引起振荡。杂散电容的来源有很多。例如，当两个导电元件靠近放置时，会在它们之间产生电场，从而导致电容效应。这种情况可以发生在印刷电路板（PCB）上，当走线平行运行时，或者在集成电路中，当各种组件密集排列时。电路板的物理布局会显著影响存在的杂散电容的数量，因此仔细设计至关重要。杂散电容带来的主要挑战之一是其不可预测的特性。与设计电容不同，设计电容可以计算和考虑，而杂散电容可能会根据温度、湿度甚至附近物体的存在而变化。这种可变性可能会使电路分析和设计变得复杂，要求工程师采用策略来减轻其影响。为了最小化杂散电容的影响，工程师可以采用几种技术。一种常见的方法是尽可能增加导电元件之间的距离。通过在PCB上间隔开走线或使用屏蔽技术，可以减少电容耦合。此外，利用接地平面可以帮助吸收一些杂散场，从而降低杂散电容对电路性能的整体影响。另一种有效的策略是使用差分信号。在这种方法中，通过成对导体发送两个互补信号。这种技术可以帮助抵消杂散电容的影响，因为两条线路将经历类似的电容耦合到其周围环境。这种方法在高速数字通信中尤为有利，因为保持信号完整性至关重要。此外，仿真工具可以帮助工程师在设计阶段预测杂散电容的影响。通过对电路进行建模并分析寄生电容，设计人员可以就布局和组件放置做出明智的决策，从而在物理原型构建之前减少潜在问题。总之，杂散电容是电子设计中的一个关键考虑因素，尤其是在高频应用中。其不可预测的性质可能导致各种问题，包括信号完整性问题和不必要的干扰。然而，通过仔细的设计实践、使用差分信号和先进的仿真技术，工程师可以有效管理和减轻杂散电容的影响。随着技术的不断进步和设备变得更加紧凑，理解和解决杂散电容将仍然是电子工程的重要方面。