tube voltmeter

简明释义

真空管电压表

英英释义

例句

1.When calibrating the power supply, we relied on a tube voltmeter for accurate readings.

在校准电源时，我们依赖于管式电压计来获得准确的读数。

2.He explained how to connect the tube voltmeter to the test circuit.

他解释了如何将管式电压计连接到测试电路。

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

技术员使用管式电压计测量电路元件之间的电压。

4.Using a tube voltmeter can help you identify faulty components in your project.

使用管式电压计可以帮助您识别项目中的故障元件。

5.The tube voltmeter is essential for diagnosing electrical issues in vintage radios.

在复古收音机中，管式电压计对于诊断电气问题至关重要。

作文

The field of electrical engineering is vast and filled with a variety of instruments that help us measure different electrical parameters. One such instrument is the tube voltmeter, which plays a crucial role in measuring voltage levels in various circuits. A tube voltmeter is essentially a device that utilizes vacuum tubes to amplify the voltage signal, allowing for precise measurements. This type of voltmeter is particularly useful in applications where high accuracy is required, such as in laboratory settings or during the testing of electronic equipment.Understanding how a tube voltmeter works requires some basic knowledge of electrical principles. The device operates by taking a small voltage input and amplifying it through a series of vacuum tubes. These tubes function as electronic valves that control the flow of electrical current. When a voltage is applied to the input terminals of the tube voltmeter, it triggers the vacuum tubes, which then amplify the signal. The amplified voltage can then be displayed on a meter, providing an accurate reading of the voltage present in the circuit.One of the key advantages of using a tube voltmeter is its ability to provide high input impedance. This means that the voltmeter does not significantly load the circuit it is measuring, which can be crucial when dealing with sensitive electronic components. In contrast, other types of voltmeters, such as analog or digital multimeters, may draw more current from the circuit, potentially affecting the measurement.Moreover, tube voltmeters are known for their durability and reliability. Unlike solid-state devices, which can be sensitive to temperature changes and voltage spikes, vacuum tubes are generally more robust. This makes them suitable for use in environments where fluctuations in electrical conditions are common.In addition to their technical advantages, tube voltmeters also have a certain aesthetic appeal. Many engineers and technicians appreciate the vintage look of these devices, which harks back to the early days of electronics. The glowing filaments of the vacuum tubes and the analog dials create a nostalgic atmosphere that many find appealing.However, it is important to note that while tube voltmeters offer several benefits, they are not without their drawbacks. For instance, they tend to be bulkier and heavier than modern digital voltmeters, making them less portable. Additionally, vacuum tubes require a warm-up period before they can provide accurate readings, which can be a disadvantage in time-sensitive situations.In conclusion, the tube voltmeter is a fascinating instrument that combines both functionality and historical significance in the field of electrical measurement. Its ability to provide accurate voltage readings without significantly loading the circuit makes it an invaluable tool for engineers and technicians alike. As technology continues to advance, it is essential to recognize the contributions of traditional instruments like the tube voltmeter in shaping the world of electronics as we know it today.

电气工程领域广阔，充满了各种仪器，帮助我们测量不同的电参数。其中一种仪器是管式电压表，在测量各种电路中的电压水平方面发挥着至关重要的作用。管式电压表本质上是一种利用真空管放大电压信号的设备，从而实现精确的测量。这种类型的电压表在需要高精度的应用中尤其有用，例如在实验室环境或电子设备测试期间。要理解管式电压表的工作原理，需要一些基本的电气原理知识。该设备通过将小电压输入信号通过一系列真空管进行放大来操作。当电压施加到管式电压表的输入端时，它会触发真空管，然后放大信号。放大的电压可以在仪表上显示，提供电路中存在的电压的准确读数。使用管式电压表的一个主要优点是其能够提供高输入阻抗。这意味着电压表不会显著加载其测量的电路，这在处理敏感电子组件时可能至关重要。相比之下，其他类型的电压表，如模拟或数字万用表，可能会从电路中抽取更多电流，从而可能影响测量结果。此外，管式电压表以其耐用性和可靠性而闻名。与对温度变化和电压尖峰敏感的固态设备不同，真空管通常更为坚固。这使它们适合在电气条件波动频繁的环境中使用。除了技术优势外，管式电压表还有一定的美学吸引力。许多工程师和技术人员欣赏这些设备的复古外观，这让人想起电子学的早期时代。真空管的发光灯丝和模拟表盘营造出一种怀旧的氛围，许多人对此感到欣赏。然而，重要的是要注意，虽然管式电压表提供了几个好处，但它们也并非没有缺点。例如，与现代数字电压表相比，它们往往更笨重、更重，不便于携带。此外，真空管在提供准确读数之前需要预热，这在时间紧迫的情况下可能是一个缺点。总之，管式电压表是一种迷人的仪器，在电气测量领域结合了功能性和历史意义。其能够提供准确的电压读数而不显著加载电路，使其成为工程师和技术人员不可或缺的工具。随着技术的不断进步，认识到传统仪器如管式电压表在塑造我们今天所知的电子世界中的贡献是至关重要的。