vacuumtube voltmeter

简明释义

电子管伏特计

英英释义

例句

1.In vintage audio equipment repair, a vacuumtube voltmeter is often preferred over digital meters.

在复古音频设备的修理中，通常更喜欢使用真空管电压表而不是数字表。

2.The technician used a vacuumtube voltmeter to measure the voltage in the old radio circuit.

技术员使用真空管电压表测量旧收音机电路中的电压。

3.When calibrating the amplifier, it is essential to check the output with a vacuumtube voltmeter.

在校准放大器时，使用真空管电压表检查输出是至关重要的。

4.The readings from the vacuumtube voltmeter helped diagnose the faulty power supply.

来自真空管电压表的读数帮助诊断了故障电源。

5.The vacuumtube voltmeter is known for its high accuracy in measuring AC and DC voltages.

真空管电压表以其在测量交流和直流电压方面的高精度而闻名。

作文

The vacuum tube voltmeter is a fascinating instrument that has played a significant role in the field of electronics and electrical engineering. To understand its importance, we must first delve into the basics of what a voltmeter does. A voltmeter is an instrument used to measure the electrical potential difference between two points in an electric circuit. This measurement is crucial for diagnosing issues in electrical systems, ensuring that devices operate within their specified voltage ranges. The vacuum tube voltmeter utilizes vacuum tubes, which are electronic devices that control the flow of electric current through a vacuum in a sealed container. The history of the vacuum tube voltmeter dates back to the early 20th century when vacuum tubes were first developed. These tubes allowed for the amplification of electrical signals, making it possible to measure voltage levels with great precision. Unlike modern digital voltmeters that rely on solid-state components, the vacuum tube voltmeter offers a unique approach, utilizing analog technology. This can lead to smoother readings and the ability to observe changes in voltage over time, which is particularly useful in certain applications. One of the key advantages of using a vacuum tube voltmeter is its high input impedance. This characteristic means that it draws very little current from the circuit being measured, minimizing the impact on the circuit's performance. This feature is especially important when measuring sensitive components or circuits where even a small amount of current draw could alter the operation of the device. Additionally, the vacuum tube voltmeter can provide a more accurate representation of rapidly changing voltages compared to some other types of voltmeters. However, the use of a vacuum tube voltmeter is not without its challenges. Vacuum tubes are generally larger and more fragile than modern semiconductor devices, making them less practical for portable applications. Furthermore, they require a warm-up period to reach optimal operating conditions, which can be a drawback in situations where immediate measurements are necessary. Despite these limitations, there remains a niche market for vacuum tube voltmeters, particularly among enthusiasts and professionals who appreciate the vintage technology and its unique characteristics. In conclusion, the vacuum tube voltmeter is an essential tool in the world of electronics, offering a blend of historical significance and practical application. Understanding how it works and its place in the evolution of measurement technology allows us to appreciate the advancements that have been made since its inception. While modern digital voltmeters dominate the market today, the vacuum tube voltmeter still holds a special place in the hearts of many engineers and technicians, reminding us of the rich history of electrical measurement and the ongoing journey of technological innovation.

真空管电压表是一个迷人的仪器，在电子和电气工程领域发挥了重要作用。要理解它的重要性，我们必须首先了解电压表的基本功能。电压表是一种用于测量电路中两点之间电势差的仪器。这种测量对于诊断电气系统中的问题至关重要，确保设备在其指定的电压范围内运行。真空管电压表利用真空管，真空管是一种通过密封容器中的真空控制电流流动的电子设备。
真空管电压表的历史可以追溯到20世纪初，当时真空管首次被开发出来。这些管子使得电信号的放大成为可能，从而可以非常精确地测量电压水平。与现代依赖于固态组件的数字电压表不同，真空管电压表提供了一种独特的方法，采用模拟技术。这可以导致更平滑的读数，并能够观察电压随时间的变化，这在某些应用中特别有用。
使用真空管电压表的主要优点之一是其高输入阻抗。这一特性意味着它从被测电路中抽取的电流非常少，最小化了对电路性能的影响。这一特性在测量敏感元件或电路时尤其重要，因为即使是很小的电流抽取也可能改变设备的操作。此外，真空管电压表在提供快速变化电压的更准确表示方面可能比其他类型的电压表更为有效。
然而，使用真空管电压表并非没有挑战。真空管通常比现代半导体设备更大且更脆弱，使得它们在便携应用中不太实用。此外，它们需要预热时间才能达到最佳工作状态，这在需要立即测量的情况下可能是一个缺点。尽管存在这些限制，但仍然有一个针对真空管电压表的利基市场，特别是在那些欣赏复古技术及其独特特性的人士和专业人士中。
总之，真空管电压表是电子世界中的一项重要工具，提供了历史意义和实际应用的结合。理解它的工作原理及其在测量技术演变中的位置使我们能够欣赏自其诞生以来所取得的进步。虽然现代数字电压表今天主导市场，但真空管电压表仍在许多工程师和技术人员的心中占据特殊地位，提醒我们电气测量的丰富历史以及技术创新的持续旅程。