hot-wire voltmeter

简明释义

热线式伏特计

英英释义

例句

1.In the lab, we learned how to calibrate a hot-wire voltmeter for accurate readings.

在实验室，我们学习了如何校准热丝电压表以获得准确的读数。

2.The technician used a hot-wire voltmeter to measure the voltage across the circuit components.

技术员使用热丝电压表测量电路元件之间的电压。

3.Before starting the experiment, make sure the hot-wire voltmeter is properly connected.

在开始实验之前，请确保热丝电压表已正确连接。

4.Using a hot-wire voltmeter, we observed fluctuations in voltage during the test.

使用热丝电压表，我们观察到测试期间电压的波动。

5.The hot-wire voltmeter is essential for measuring AC voltage in high-frequency applications.

在高频应用中，热丝电压表对于测量交流电压至关重要。

作文

In the field of electrical engineering, various instruments are utilized to measure different electrical parameters. One such instrument is the hot-wire voltmeter, which plays a crucial role in measuring voltage levels with high accuracy. Understanding the working principle and applications of the hot-wire voltmeter can greatly enhance one's knowledge in the field of electronics.The hot-wire voltmeter operates on the principle of thermal expansion. It consists of a fine wire that heats up when an electric current passes through it. The amount of heat generated is proportional to the square of the current flowing through the wire. This heating causes the wire to expand, and this expansion is measured to determine the voltage level. The hot-wire voltmeter is particularly useful in AC circuits because it can accurately measure the effective value of the voltage, making it a preferred choice for engineers and technicians.One of the significant advantages of using a hot-wire voltmeter is its sensitivity and precision. Unlike traditional voltmeters, which may be limited by their internal resistance, the hot-wire voltmeter does not introduce significant loading effects into the circuit being measured. This means that it can provide a more accurate representation of the actual voltage present in the circuit, especially in high-frequency applications where other types of voltmeters may struggle.Additionally, the hot-wire voltmeter is capable of measuring both AC and DC voltages, although it is primarily used for AC measurements due to its design. Its ability to handle varying frequencies makes it an essential tool in laboratories and industrial settings where electrical signals can fluctuate rapidly.Moreover, the hot-wire voltmeter is often employed in research and development projects, where precise voltage measurements are critical. For instance, in the testing of new electronic components or systems, engineers rely on the accuracy of the hot-wire voltmeter to ensure that their designs meet specified electrical standards.Despite its many advantages, the hot-wire voltmeter does have some limitations. For example, it can be affected by environmental factors such as temperature and humidity, which can influence the readings. Therefore, it is essential to calibrate the device regularly to maintain its accuracy. Additionally, the hot-wire voltmeter may not be suitable for measuring very low voltages, as the thermal effects may become negligible in such cases.In conclusion, the hot-wire voltmeter is a valuable instrument in the realm of electrical measurements. Its unique operating principle based on thermal expansion allows it to deliver precise voltage readings, especially in AC circuits. While it has certain limitations, its benefits far outweigh them, making it an indispensable tool for engineers and technicians alike. As technology continues to advance, the hot-wire voltmeter will undoubtedly remain a vital part of electrical measurement techniques, contributing to the ongoing development of innovative electronic solutions.

在电气工程领域，利用各种仪器来测量不同的电气参数。其中一种仪器是热丝电压表，它在高精度测量电压水平方面发挥着至关重要的作用。理解热丝电压表的工作原理和应用可以极大地增强一个人在电子领域的知识。热丝电压表的工作原理基于热膨胀。它由一根细丝组成，当电流通过时，细丝会加热。产生的热量与通过细丝的电流的平方成正比。这种加热导致细丝膨胀，而这种膨胀被测量以确定电压水平。热丝电压表在交流电路中尤其有用，因为它可以准确测量电压的有效值，使其成为工程师和技术人员的首选。使用热丝电压表的一个显著优点是其灵敏度和精确性。与传统电压表不同，后者可能受到内部电阻的限制，热丝电压表不会对被测电路引入显著的负载效应。这意味着它可以提供电路中实际电压的更准确表示，特别是在高频应用中，其他类型的电压表可能会遇到困难。此外，热丝电压表能够测量交流和直流电压，尽管由于其设计，它主要用于交流测量。其处理变化频率的能力使其成为实验室和工业环境中不可或缺的工具，在这些环境中，电信号可能会迅速波动。而且，热丝电压表通常用于研究和开发项目中，在这些项目中，精确的电压测量至关重要。例如，在测试新电子元件或系统时，工程师依赖热丝电压表的准确性，以确保他们的设计符合规定的电气标准。尽管有许多优点，热丝电压表也有一些局限性。例如，它可能会受到温度和湿度等环境因素的影响，这可能会影响读数。因此，定期校准设备以保持其准确性至关重要。此外，热丝电压表可能不适合测量非常低的电压，因为在这种情况下，热效应可能变得微不足道。总之，热丝电压表是电气测量领域中的一种宝贵仪器。其基于热膨胀的独特工作原理使其能够提供精确的电压读数，特别是在交流电路中。虽然它有某些局限性，但其好处远远超过这些局限性，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，热丝电压表无疑将继续成为电气测量技术的重要组成部分，为创新电子解决方案的持续发展做出贡献。