electron tube

简明释义

电子管

英英释义

例句

1.The electron tube in the amplifier was malfunctioning, causing distortion.

放大器中的电子管出现故障，导致失真。

2.The radio uses an electron tube to amplify the sound signal.

这台收音机使用一个电子管来放大声音信号。

3.Modern audio equipment has largely replaced electron tubes with transistors.

现代音频设备在很大程度上用晶体管取代了电子管。

4.Many vintage televisions relied on electron tubes for their display technology.

许多复古电视依赖于电子管作为其显示技术。

5.An electron tube can be used in high-power RF amplifiers.

一个电子管可以用于高功率射频放大器。

作文

The invention of the electron tube (电子管) marked a significant turning point in the history of electronics. Before the advent of the electron tube, electronic devices were limited in their capabilities and applications. The electron tube allowed for the amplification and switching of electrical signals, which paved the way for the development of radios, televisions, and early computers. In essence, the electron tube serves as a vital component that enabled the transition from mechanical to electronic technologies.One of the most notable characteristics of the electron tube is its ability to control the flow of electrons in a vacuum. This is achieved by creating a vacuum environment within a sealed glass or metal container, where electrons can move freely without interference from air molecules. The basic structure of an electron tube typically includes a cathode, an anode, and one or more control grids. The cathode emits electrons when heated, while the anode collects these electrons. By applying voltage to the control grid, the flow of electrons can be modulated, allowing for signal amplification.The impact of the electron tube on modern technology cannot be overstated. In the early 20th century, it was instrumental in the development of radio broadcasting, enabling clearer transmission of sound over long distances. As a result, the electron tube played a crucial role in shaping the entertainment industry and transforming communication methods. Furthermore, during World War II, electron tubes were essential in radar systems, providing military forces with the ability to detect enemy aircraft and ships.Despite the rise of solid-state devices such as transistors, the electron tube still finds applications in specific fields today. For instance, high-power broadcasting and audio amplification often utilize electron tubes due to their unique characteristics, such as high linearity and low distortion. Audiophiles often prefer tube amplifiers for their warm sound quality, which is attributed to the natural compression and harmonic distortion that electron tubes produce. Moreover, in scientific research, electron tubes are employed in particle accelerators and other experimental setups where precise control of electron flow is necessary. Their ability to handle high voltages and currents makes them indispensable in certain high-energy physics applications.In conclusion, the electron tube (电子管) has played a pivotal role in the evolution of electronic technology. Its ability to amplify and switch signals laid the foundation for many modern devices we use today. While solid-state technology has largely replaced electron tubes in everyday electronics, their unique properties ensure that they remain relevant in specialized applications. Understanding the significance of the electron tube allows us to appreciate the advancements in technology and the historical context of our current electronic landscape.