indirectly heated cathode

简明释义

间接加热阴极;芳热式阴极

英英释义

例句

1.The vacuum tube uses an indirectly heated cathode to emit electrons efficiently.

该真空管使用间接加热阴极来高效发射电子。

2.In high-power applications, an indirectly heated cathode offers better thermal stability.

在高功率应用中，间接加热阴极提供更好的热稳定性。

3.Many modern electron tubes feature an indirectly heated cathode for improved performance.

许多现代电子管采用间接加热阴极以提高性能。

4.The design of the indirectly heated cathode minimizes the risk of contamination.

该间接加热阴极的设计最小化了污染风险。

5.An indirectly heated cathode can achieve higher temperatures without affecting the filament directly.

一个间接加热阴极可以在不直接影响灯丝的情况下达到更高的温度。

作文

The concept of an indirectly heated cathode plays a crucial role in the field of electronics, particularly in vacuum tubes and certain types of electron sources. To understand what an indirectly heated cathode is, we first need to explore how it functions within these devices. An indirectly heated cathode is a component that emits electrons when heated, but unlike directly heated cathodes, it does not have the heating element in direct contact with the cathode material itself. Instead, the heating element is placed nearby, typically in a separate structure, which allows for better control of the temperature and improves efficiency.In applications such as radio frequency (RF) amplifiers or in older television sets, the use of an indirectly heated cathode offers several advantages. One of the primary benefits is the reduction of noise. Since the cathode is heated indirectly, the thermal fluctuations that can cause noise in the output signal are minimized. This characteristic is particularly important in high-fidelity audio equipment where clarity and precision are paramount.Furthermore, the design of an indirectly heated cathode allows for greater longevity compared to its directly heated counterparts. Directly heated cathodes tend to wear out faster due to the high temperatures they must endure. In contrast, the indirect heating process means that the cathode can operate at lower temperatures, thereby extending its lifespan and reducing maintenance costs.Another significant aspect of the indirectly heated cathode is its application in modern technologies, including some types of gas discharge lamps and light-emitting diodes (LEDs). The principles that govern the operation of these devices often stem from the foundational concepts established by the use of indirectly heated cathodes. As technology continues to advance, the understanding and implementation of these cathodes are evolving, leading to innovations in energy efficiency and performance.In summary, the indirectly heated cathode is a vital component in various electronic devices, offering enhanced performance through reduced noise, increased durability, and broader applications. As we delve deeper into the world of electronics, the importance of such components cannot be overstated. Whether in historical contexts or modern advancements, the indirectly heated cathode remains a fundamental building block that underpins many technologies we rely on today. Understanding its function and benefits will provide insight into the ongoing evolution of electronic devices and their capabilities.

“间接加热阴极”的概念在电子学领域中扮演着至关重要的角色，特别是在真空管和某些类型的电子源中。要理解什么是“间接加热阴极”，我们首先需要探讨它在这些设备中的功能。“间接加热阴极”是一个在加热时发射电子的组件，但与直接加热阴极不同，它的加热元件并不与阴极材料直接接触。相反，加热元件被放置在附近，通常在一个单独的结构中，这样可以更好地控制温度并提高效率。在无线电频率（RF）放大器或旧电视机等应用中，使用“间接加热阴极”提供了几个优点。主要的好处之一是噪声的减少。由于阴极是间接加热的，因此可以减小可能导致输出信号噪声的热波动。这一特性在高保真音频设备中尤其重要，因为清晰度和精确度至关重要。此外，“间接加热阴极”的设计使其相比直接加热阴极具有更长的使用寿命。直接加热阴极由于必须承受高温而往往磨损得更快。相比之下，间接加热过程意味着阴极可以在较低的温度下工作，从而延长其使用寿命并降低维护成本。“间接加热阴极”的另一个重要方面是它在现代技术中的应用，包括某些类型的气体放电灯和发光二极管（LED）。这些设备的运行原理往往源于使用“间接加热阴极”所建立的基础概念。随着技术的不断进步，对这些阴极的理解和应用也在不断演变，推动了能效和性能的创新。总之，“间接加热阴极”是各种电子设备中的关键组件，通过降低噪声、增加耐用性和更广泛的应用，提供了增强的性能。随着我们深入电子世界，这些组件的重要性不容小觑。无论是在历史背景还是现代进步中，“间接加热阴极”依然是许多我们今天依赖的技术的基础构件。理解其功能和好处将为我们提供对电子设备及其能力持续演变的洞察。