vacuum tube

简明释义

真空管

英英释义

例句

1.Many vintage guitar amplifiers are designed with a vacuum tube circuit.

许多复古吉他放大器采用真空管电路设计。

2.The old radio uses a vacuum tube for amplification.

这台旧收音机使用真空管进行放大。

3.A vacuum tube can be found in some high-end audio equipment for better sound quality.

一些高端音响设备中可以找到真空管以获得更好的音质。

4.The scientist explained how the vacuum tube works in a physics lecture.

科学家在物理讲座中解释了真空管的工作原理。

5.In the early days of computing, the vacuum tube was essential for processing data.

在计算机早期，真空管对于数据处理至关重要。

作文

The invention of the vacuum tube has played a pivotal role in the development of modern electronics. A vacuum tube is an electronic device that controls electric current flow in a vacuum between electrodes to which an electric potential difference has been applied. This technology was first developed in the early 20th century and has since laid the foundation for numerous advancements in telecommunications, computing, and audio technology.To understand the significance of the vacuum tube, we must look back at its historical context. Before the advent of solid-state devices, such as transistors, the vacuum tube was the primary component used in radios, televisions, and early computers. It allowed for the amplification of electrical signals, making it possible to transmit sound and image over long distances. The first vacuum tube, known as the Audion, was invented by Lee De Forest in 1906. This invention revolutionized the way we communicate and paved the way for the electronic age.The basic operation of a vacuum tube involves the movement of electrons through a vacuum from a heated cathode to an anode. When the cathode is heated, it emits electrons, which are attracted to the positively charged anode. By placing additional elements, such as grids, within the tube, it became possible to control the flow of electrons and thus amplify signals. This principle is fundamental to how many electronic devices operate even today.Despite their many advantages, vacuum tubes also have some drawbacks. They are relatively large and fragile compared to modern semiconductor devices. Additionally, they consume more power and generate more heat, which can be a significant issue in compact electronic designs. As a result, the introduction of transistors in the 1950s led to a decline in the use of vacuum tubes in most applications.However, vacuum tubes have not disappeared entirely. They still find application in specific areas where their unique properties are advantageous. For instance, high-power RF amplifiers used in broadcasting and radar systems often utilize vacuum tubes due to their ability to handle high voltages and currents. Furthermore, audiophiles often prefer vacuum tube amplifiers for their warm sound quality, which is considered more pleasing than that of solid-state amplifiers.In conclusion, the vacuum tube has had a profound impact on the field of electronics and continues to be relevant in certain niches today. Understanding the principles behind the vacuum tube not only provides insight into the history of technology but also highlights the evolution of electronic components. As we move further into the digital age, it is essential to appreciate the foundational technologies that have shaped our modern world, including the remarkable vacuum tube.

真空管的发明在现代电子技术的发展中发挥了关键作用。真空管是一种电子设备，它在电极之间的真空中控制电流流动，这些电极之间施加了电位差。这项技术最早是在20世纪初开发的，并且自此以来为电信、计算机和音频技术的众多进步奠定了基础。要理解真空管的重要性，我们必须回顾其历史背景。在固态器件（如晶体管）出现之前，真空管是用于收音机、电视和早期计算机的主要组件。它使电信号的放大成为可能，从而使声音和图像能够远距离传输。第一个真空管，被称为Audion，是由李·德·福雷斯特于1906年发明的。这项发明彻底改变了我们的沟通方式，并为电子时代铺平了道路。真空管的基本操作涉及电子从加热阴极通过真空移动到阳极。当阴极被加热时，它会发射电子，这些电子被带正电的阳极吸引。通过在管内放置额外的元件，如网格，便可以控制电子的流动，从而放大信号。这一原理是许多电子设备甚至今天仍在操作的基础。尽管有许多优点，真空管也存在一些缺点。与现代半导体器件相比，它们相对较大且易碎。此外，它们消耗更多电力并产生更多热量，这在紧凑型电子设计中可能是一个重大问题。因此，随着晶体管在20世纪50年代的引入，真空管在大多数应用中的使用逐渐减少。然而，真空管并没有完全消失。它们仍然在某些特定领域中找到应用，因为它们独特的性质是有利的。例如，用于广播和雷达系统的高功率射频放大器通常利用真空管，因为它们能够处理高电压和电流。此外，音响爱好者通常更喜欢真空管放大器，因为它们的温暖音质被认为比固态放大器更令人愉悦。总之，真空管对电子领域产生了深远的影响，并在今天的某些小众领域中仍然相关。理解真空管背后的原理不仅提供了对技术历史的洞察，还突显了电子组件的演变。随着我们进一步进入数字时代，欣赏塑造我们现代世界的基础技术至关重要，包括卓越的真空管。