vacuum tube voltmeter

简明释义

电子管电压表

英英释义

例句

1.During the troubleshooting process, the technician relied on a vacuum tube voltmeter to diagnose the issue.

在故障排除过程中，技术人员依靠真空管电压表来诊断问题。

2.The vacuum tube voltmeter is known for its high input impedance, making it ideal for sensitive measurements.

真空管电压表以其高输入阻抗而闻名，非常适合敏感测量。

3.The engineer used a vacuum tube voltmeter to measure the voltage across the circuit components.

工程师使用真空管电压表测量电路元件之间的电压。

4.The vintage radio was tested using a vacuum tube voltmeter to ensure proper operation.

使用真空管电压表测试了复古收音机，以确保其正常运行。

5.In the lab, we calibrated the vacuum tube voltmeter for accurate readings.

在实验室，我们对真空管电压表进行了校准，以确保读数准确。

作文

The evolution of electronic measuring instruments has greatly enhanced our understanding and capabilities in the field of electrical engineering. One such instrument that played a significant role in this development is the vacuum tube voltmeter. A vacuum tube voltmeter (VTVM) is an analog device used to measure voltage levels in electrical circuits, utilizing vacuum tubes to amplify the signals it measures. This technology emerged in the early 20th century and was pivotal before the advent of modern digital multimeters.The basic principle behind a vacuum tube voltmeter involves the use of vacuum tubes, which are devices that control electric current flow in a high vacuum between electrodes. When a voltage is applied, the vacuum tube allows for the amplification of the input signal, making it possible to measure even very small voltages accurately. This amplification is essential because it allows the meter to display a readable value on its scale, providing engineers and technicians with critical information about the electrical characteristics of a circuit.One of the key advantages of a vacuum tube voltmeter is its high input impedance. This means that it draws very little current from the circuit being measured, which is particularly important when dealing with sensitive electronic components. In contrast, traditional analog voltmeters could alter the circuit's behavior due to their lower input impedance, potentially leading to inaccurate readings. The high input impedance of a vacuum tube voltmeter ensures that measurements do not affect the circuit operation, allowing for precise diagnostics and troubleshooting.However, with the rapid advancement of technology, the use of vacuum tube voltmeters has declined significantly. Modern digital voltmeters offer numerous advantages, including greater accuracy, ease of use, and the ability to store and analyze data electronically. Despite this, many engineers and enthusiasts still appreciate the unique characteristics of a vacuum tube voltmeter, especially for specific applications in audio equipment and vintage electronics where the warm sound produced by vacuum tubes is often desired.In conclusion, the vacuum tube voltmeter represents a significant milestone in the history of electrical measurement tools. While newer technologies have largely replaced it, the principles and functionalities of a vacuum tube voltmeter continue to influence modern measuring devices. Understanding its operation not only provides insight into the historical context of electrical engineering but also enhances our appreciation for the intricate designs that have shaped the tools we use today. As technology progresses, it is essential to remember the foundational instruments like the vacuum tube voltmeter that paved the way for innovation in the field of electronics.

电子测量仪器的发展极大地增强了我们在电气工程领域的理解和能力。其中一个在这一发展中发挥重要作用的仪器是真空管电压表。真空管电压表（VTVM）是一种模拟设备，用于测量电路中的电压水平，利用真空管放大它所测量的信号。这项技术在20世纪初出现，并在现代数字万用表问世之前发挥了关键作用。真空管电压表的基本原理涉及使用真空管，这是一种在高真空中控制电极间电流流动的设备。当施加电压时，真空管允许输入信号的放大，使得能够准确测量甚至非常小的电压。这种放大至关重要，因为它使仪表能够在其刻度上显示可读的值，为工程师和技术人员提供关于电路电气特性的关键信息。真空管电压表的一个主要优势是其高输入阻抗。这意味着它从被测电路中抽取的电流非常少，这在处理敏感电子元件时尤为重要。相比之下，传统的模拟电压表可能由于其较低的输入阻抗而改变电路的行为，从而可能导致不准确的读数。真空管电压表的高输入阻抗确保测量不会影响电路操作，从而允许精确的诊断和故障排除。然而，随着技术的快速进步，真空管电压表的使用显著下降。现代数字电压表提供了许多优点，包括更高的准确性、易用性，以及存储和分析数据的能力。尽管如此，许多工程师和爱好者仍然欣赏真空管电压表的独特特性，特别是在音频设备和复古电子产品中，在这些应用中，真空管产生的温暖音色往往是人们所追求的。总之，真空管电压表代表了电气测量工具历史上的一个重要里程碑。尽管新技术在很大程度上取代了它，但真空管电压表的原理和功能继续影响现代测量设备。理解其操作不仅提供了对电气工程历史背景的洞察，也增强了我们对塑造今天所用工具的复杂设计的欣赏。随着技术的进步，记住像真空管电压表这样的基础仪器在电子领域创新的道路上铺平了道路，是至关重要的。