dielectric absorption

简明释义

介质吸收

英英释义

例句

1.Testing for dielectric absorption 介质吸收 is crucial in ensuring the reliability of high-voltage insulation.

测试介质吸收在确保高压绝缘的可靠性方面至关重要。

2.To mitigate dielectric absorption 介质吸收, we used low-loss dielectric materials in our design.

为了减轻介质吸收，我们在设计中使用了低损耗的介质材料。

3.Engineers must consider dielectric absorption 介质吸收 when designing circuits for sensitive applications.

工程师在为敏感应用设计电路时必须考虑介质吸收。

4.The phenomenon of dielectric absorption 介质吸收 can lead to errors in precision measurements.

现象介质吸收可能导致精密测量中的错误。

5.The capacitor showed significant dielectric absorption 介质吸收 after being charged for a long time.

这个电容器在长时间充电后显示出显著的介质吸收。

作文

Understanding the concept of dielectric absorption is essential for anyone involved in the field of electronics and materials science. This phenomenon refers to the tendency of a dielectric material to retain some amount of electrical energy after an external electric field has been removed. When a dielectric material, such as a capacitor, is charged, it stores energy in the form of an electric field. However, even after the voltage is removed, the material does not completely release all of the stored energy immediately. Instead, it gradually discharges over time, which is where dielectric absorption comes into play. This behavior can significantly impact the performance of electronic devices. For example, in capacitors, dielectric absorption can lead to what is known as 'memory effect,' where the capacitor appears to hold a charge even when it has been disconnected from a power source. This can cause inaccuracies in measurements and unexpected behavior in circuits. Understanding dielectric absorption is crucial for engineers and designers who need to account for this effect in their applications.The underlying mechanisms of dielectric absorption involve the molecular structure of dielectric materials. When an electric field is applied, polar molecules within the material align themselves with the field, storing energy. Upon removal of the field, these molecules do not return to their original state instantaneously. Instead, they take time to realign, causing the material to release the stored energy slowly. The time constant for this process can vary widely depending on the type of dielectric material used. Different materials exhibit different levels of dielectric absorption. For instance, ceramic capacitors typically show lower levels of absorption compared to electrolytic capacitors. This property must be considered when selecting capacitors for specific applications, especially in precision circuits where accuracy is paramount. In practical terms, engineers often conduct tests to measure dielectric absorption in various materials. One common method involves charging a capacitor to a specific voltage and then disconnecting it while measuring the voltage drop over time. By analyzing the rate at which the voltage decreases, one can determine the level of dielectric absorption present in the capacitor. This information is invaluable for predicting how the capacitor will behave in real-world applications.Furthermore, dielectric absorption is not only relevant in capacitors but also in other components such as insulators and wires. In high-frequency applications, the effects of dielectric absorption can lead to signal distortion, affecting the overall performance of communication systems. Engineers must design circuits that minimize these effects to ensure reliable operation.In conclusion, a thorough understanding of dielectric absorption is vital for anyone working with electronic components. This phenomenon can influence the performance and reliability of devices, making it necessary for designers and engineers to consider it during the design and selection process. As technology continues to advance, the implications of dielectric absorption will remain significant, emphasizing the importance of ongoing research and education in this area.

理解介质吸收的概念对于任何参与电子和材料科学领域的人来说都是至关重要的。这个现象指的是介质材料在外部电场移除后仍然保留一定量电能的倾向。当一个介质材料，如电容器，被充电时，它以电场的形式储存能量。然而，即使电压被移除，材料并不会立即释放所有储存的能量。相反，它会随着时间的推移逐渐放电，这就是介质吸收发挥作用的地方。这种行为会显著影响电子设备的性能。例如，在电容器中，介质吸收可能导致所谓的“记忆效应”，电容器似乎在断开电源后仍然保持电荷。这可能导致测量不准确和电路中出现意想不到的行为。理解介质吸收对工程师和设计师至关重要，他们需要在应用中考虑这一效应。介质吸收的基本机制涉及介质材料的分子结构。当施加电场时，材料中的极性分子会与电场对齐，从而储存能量。在去除电场后，这些分子并不会瞬间返回到原始状态。相反，它们需要时间重新对齐，导致材料缓慢释放储存的能量。这个过程的时间常数可以根据所使用的介质材料类型有很大的不同。不同的材料表现出不同程度的介质吸收。例如，陶瓷电容器通常显示出较低的吸收水平，而电解电容器则较高。在选择特定应用的电容器时，必须考虑这一特性，特别是在精密电路中，准确性至关重要。在实际操作中，工程师通常会进行测试以测量各种材料中的介质吸收。一种常见的方法是将电容器充电到特定电压，然后在断开连接的同时测量电压随时间的下降。通过分析电压下降的速率，可以确定电容器中存在的介质吸收水平。这些信息对于预测电容器在实际应用中的表现非常宝贵。此外，介质吸收不仅与电容器相关，还与其他组件如绝缘体和电线有关。在高频应用中，介质吸收的影响可能导致信号失真，影响通信系统的整体性能。工程师必须设计电路以最小化这些影响，以确保可靠的操作。总之，全面理解介质吸收对于任何与电子元件打交道的人来说都是至关重要的。这一现象可以影响设备的性能和可靠性，使设计师和工程师在设计和选择过程中必须考虑它。随着技术的不断进步，介质吸收的影响将始终显著，强调了在这一领域持续研究和教育的重要性。