thermionic valve

简明释义

电子管

英英释义

例句

1.The thermionic valve technology paved the way for modern electronics.

热电子阀技术为现代电子设备铺平了道路。

2.He replaced the faulty thermionic valve in his amplifier to restore its functionality.

他更换了放大器中的故障热电子阀以恢复其功能。

3.Many vintage audio amplifiers rely on thermionic valves for their warm sound.

许多复古音频放大器依赖于热电子阀来产生温暖的音质。

4.The radio uses a thermionic valve to amplify the sound signals.

这台收音机使用热电子阀来放大声音信号。

5.In early computers, a thermionic valve was essential for processing data.

在早期计算机中，热电子阀对数据处理至关重要。

作文

The invention of the thermionic valve marked a significant turning point in the history of electronics. Also known as vacuum tubes, these devices were pivotal in the development of early radio technology and the advancement of computers. The thermionic valve operates on the principle of thermionic emission, where electrons are emitted from a heated cathode and move towards an anode, allowing for the control of electric current. This fundamental principle enabled the amplification and switching of electrical signals, which was essential for the performance of various electronic devices.In the early 20th century, the thermionic valve was introduced to the world by inventors such as John Ambrose Fleming and Lee De Forest. Fleming's valve, created in 1904, was the first true vacuum tube and served as a rectifier, converting alternating current (AC) to direct current (DC). De Forest later improved upon this design by adding a grid electrode, which allowed for amplification, leading to the creation of the triode. This enhancement opened up a new realm of possibilities for radio broadcasting, sound recording, and early computing.The impact of the thermionic valve on society cannot be overstated. It facilitated the rise of the radio industry, making it possible for people to access news and entertainment from the comfort of their homes. Furthermore, during World War II, vacuum tubes were essential for radar systems, greatly contributing to military advancements. The ability to amplify weak signals allowed for clearer communication and better detection of enemy aircraft.As technology progressed, the thermionic valve began to face competition from solid-state devices, particularly transistors. Transistors, which are smaller, more efficient, and more reliable than vacuum tubes, started to replace thermionic valves in most applications by the 1960s. However, the unique characteristics of thermionic valves still make them desirable in certain fields, such as high-fidelity audio equipment and specialized scientific instruments.Today, while we live in an age dominated by digital technology, the legacy of the thermionic valve continues to influence modern electronics. Audiophiles often seek out vacuum tube amplifiers for their warm sound quality, which many believe is superior to that of solid-state amplifiers. Additionally, some experimental physicists use thermionic valves in research settings due to their ability to handle high voltages and currents.In conclusion, the thermionic valve has played a crucial role in shaping the electronic landscape of the 20th century. Its invention paved the way for numerous technological advancements, from radio communication to computing. While newer technologies have emerged, the enduring appeal of thermionic valves in specific applications demonstrates their lasting significance in the world of electronics. As we continue to explore the boundaries of technology, understanding the history and function of devices like the thermionic valve is essential for appreciating the innovations that have come before us and the potential for future developments.

热电子阀的发明标志着电子历史的重要转折点。热电子阀也被称为真空管，这些设备在早期无线电技术的发展和计算机的进步中发挥了关键作用。热电子阀基于热电子发射原理工作，电子从加热的阴极发射并朝向阳极移动，从而允许控制电流。这一基本原理使得电信号的放大和切换成为可能，这对各种电子设备的性能至关重要。在20世纪初，热电子阀由约翰·安布罗斯·弗莱明和李·德·福雷斯特等发明家引入世界。弗莱明于1904年创造的阀是第一个真正的真空管，作为整流器，将交流电（AC）转换为直流电（DC）。德·福雷斯特后来在此设计上进行了改进，增加了一个网格电极，使得放大成为可能，导致了三极管的诞生。这一增强开辟了无线电广播、声音录制和早期计算的新领域。热电子阀对社会的影响不可低估。它促进了无线电行业的崛起，使人们能够在家中舒适地获取新闻和娱乐。此外，在第二次世界大战期间，真空管对于雷达系统至关重要，大大促进了军事进步。放大微弱信号的能力使得通信更加清晰，敌机的探测更加有效。随着技术的进步，热电子阀开始面临来自固态设备，特别是晶体管的竞争。晶体管比真空管更小、更高效且更可靠，在20世纪60年代开始取代热电子阀的大多数应用。然而，热电子阀的独特特性在某些领域仍然受到青睐，如高保真音频设备和专业科学仪器。今天，尽管我们生活在一个以数字技术为主导的时代，热电子阀的遗产仍然继续影响现代电子产品。音响爱好者常常寻求真空管放大器，因为它们的温暖音质被许多人认为优于固态放大器。此外，一些实验物理学家在研究环境中使用热电子阀，因为它们能够处理高电压和电流。总之，热电子阀在塑造20世纪电子领域中发挥了至关重要的作用。它的发明为无线电通信到计算机等众多技术进步铺平了道路。尽管新技术已经出现，但热电子阀在特定应用中的持久吸引力证明了它们在电子世界中的重要性。随着我们继续探索技术的边界，理解像热电子阀这样的设备的历史和功能对于欣赏那些在我们之前的创新以及未来发展的潜力至关重要。