thermionic vacuum tube

简明释义

热阴极真空管

英英释义

例句

1.Modern televisions have largely replaced thermionic vacuum tubes with transistors.

现代电视已基本用晶体管取代了热电子真空管。

2.In high-fidelity audio systems, thermionic vacuum tubes are prized for their warm sound.

在高保真音响系统中，热电子真空管因其温暖的音色而受到推崇。

3.The invention of the thermionic vacuum tube revolutionized radio technology.

热电子真空管的发明彻底改变了无线电技术。

4.Many early computers used thermionic vacuum tubes for processing data.

许多早期计算机使用热电子真空管进行数据处理。

5.The thermionic vacuum tube operates by heating a filament to emit electrons.

热电子真空管通过加热灯丝来发射电子。

作文

The evolution of technology has been marked by several key inventions that have transformed the way we communicate and process information. One such invention is the thermionic vacuum tube, a device that played a crucial role in the development of electronics in the early 20th century. To understand its significance, we must first explore its function and applications.A thermionic vacuum tube is an electronic device that controls the flow of electric current through a vacuum. It consists of a heated cathode that emits electrons, which then travel through a vacuum to an anode. This process allows the tube to amplify signals, rectify currents, and perform other essential functions in electronic circuits. The invention of the thermionic vacuum tube in the 1900s revolutionized radio technology, enabling clearer sound transmission and paving the way for modern broadcasting.Before the advent of the thermionic vacuum tube, electronic devices relied on mechanical components and less efficient methods for signal processing. The introduction of this tube made it possible to create more compact and reliable devices. For instance, radios became more accessible to the general public, and the quality of sound improved significantly. Moreover, the thermionic vacuum tube was instrumental in the development of early computers, serving as the primary component for logic operations and data processing.Despite its many advantages, the thermionic vacuum tube also had limitations. It was relatively large, consumed a significant amount of power, and generated heat, which could lead to failure if not properly managed. As technology advanced, transistors began to replace vacuum tubes in many applications due to their smaller size, lower power consumption, and greater reliability. However, the legacy of the thermionic vacuum tube remains significant, as it laid the groundwork for the electronic age.In contemporary times, the thermionic vacuum tube is still used in specific applications, particularly in high-power transmitters and audio equipment. Audiophiles often prefer tube amplifiers because they believe that these devices produce a warmer and more pleasing sound compared to their solid-state counterparts. Additionally, some scientific instruments still utilize thermionic vacuum tubes for their unique properties in electron emission and signal amplification.In conclusion, the thermionic vacuum tube is a remarkable invention that has greatly influenced the field of electronics. Its ability to amplify and control electrical signals led to significant advancements in communication and computing technologies. While it has largely been supplanted by transistors in most applications, the thermionic vacuum tube continues to hold a place in specialized areas, demonstrating its enduring impact on the world of technology. Understanding this device not only provides insight into the history of electronics but also highlights the importance of innovation in shaping our modern lives.

技术的演变经历了几个关键发明，这些发明改变了我们交流和处理信息的方式。其中一个重要的发明是热电子真空管，这一设备在20世纪早期电子技术的发展中发挥了关键作用。要理解它的重要性，我们首先必须探讨它的功能和应用。热电子真空管是一种通过真空控制电流流动的电子设备。它由一个加热的阴极组成，阴极发射电子，这些电子随后穿过真空到达阳极。这个过程使得该管能够放大信号、整流电流，并在电子电路中执行其他基本功能。热电子真空管在1900年代的发明彻底改变了无线电技术，使声音传输更加清晰，并为现代广播铺平了道路。在热电子真空管出现之前，电子设备依赖于机械组件和效率较低的信号处理方法。这种管的引入使得创造更紧凑和可靠的设备成为可能。例如，无线电变得更加普及，声音质量显著改善。此外，热电子真空管在早期计算机的发展中也发挥了重要作用，作为逻辑运算和数据处理的主要组件。尽管有许多优点，热电子真空管也存在局限性。它相对较大，消耗大量电力，并产生热量，如果管理不当可能导致故障。随着技术的进步，晶体管开始在许多应用中取代真空管，因为它们体积更小、功耗更低且更可靠。然而，热电子真空管的遗产仍然显著，因为它为电子时代奠定了基础。在当代，热电子真空管仍在特定应用中使用，特别是在高功率发射器和音频设备中。音响爱好者通常偏爱管式放大器，因为他们认为这些设备产生的声音比固态放大器更温暖、更令人愉悦。此外，一些科学仪器仍利用热电子真空管在电子发射和信号放大方面的独特特性。总之，热电子真空管是一项了不起的发明，它对电子领域产生了重大影响。其放大和控制电信号的能力导致了通信和计算技术的重大进步。虽然在大多数应用中它已被晶体管所取代，但热电子真空管在特定领域仍占有一席之地，展示了它对科技世界的持久影响。理解这一设备不仅提供了对电子历史的洞察，也突显了创新在塑造我们现代生活中的重要性。