ohmmeter

简明释义

英[ˈəʊmmiːtə(r)]美[ˈoʊmmiːtər]

n. [电] 欧姆计；[电] 电阻表

英英释义

单词用法

同义词

反义词

例句

1.An ohmmeter with four-terminal measurement capability is used to prevent lead resistance from being added to the measurement. The source terminals are connected on either end of the contact pair.

使用具有四端测量能力的欧姆计，以避免在测量结果中计入引线电阻。

2.Therefore, it's prudent to measure the insulation resistance of the test fixtures and cables periodically with an electrometer ohmmeter to ensure their integrity.

因此谨慎的做法是定期地用静电计欧姆计来测量测试夹具和电缆的绝缘电阻，以保证其完整性。

3.High resistance measurements using the constant-current method may be made using either an electrometer voltmeter and current source or just an electrometer ohmmeter.

采用恒流法，可以使用静电计电压表和电流源或者只使用静电计欧姆计来测量高电阻。

4.An ohmmeter with four-terminal measurement capability is used to prevent lead resistance from being added to the measurement. The source terminals are connected on either end of the contact pair.

使用具有四端测量能力的欧姆计，以避免在测量结果中计入引线电阻。

5.To get the multimeter to function as an ohmmeter , you will need to select a resistance range.

用万用表来作电阻表使用时，你需要选择电阻量程。

6.Figure 2-33 shows the electrometer ohmmeter measuring a resistance (R).

图2-33示出静电计欧姆计测量电阻（R）的情况。

7.Before starting the circuit, make sure to check the resistance with an ohmmeter.

在启动电路之前，请确保使用欧姆计检查电阻。

8.An ohmmeter is essential for diagnosing electrical problems in appliances.

使用欧姆计对于诊断电器中的电气问题至关重要。

9.You can use an ohmmeter to test if a resistor is still functioning properly.

你可以使用欧姆计测试电阻器是否正常工作。

10.When measuring continuity, an ohmmeter is your best tool.

在测量连续性时，欧姆计是你最好的工具。

11.To ensure safety, always disconnect power before using an ohmmeter.

为了确保安全，在使用欧姆计之前务必断开电源。

作文

An ohmmeter is an essential instrument used in the field of electronics and electrical engineering. It measures the resistance of a material or component, which is crucial for understanding how electricity flows through different parts of a circuit. The ohmmeter operates based on Ohm's Law, which states that the current flowing through a conductor between two points is directly proportional to the voltage across the two points and inversely proportional to the resistance between them. This relationship is fundamental in diagnosing issues within electrical systems. When using an ohmmeter, one typically connects the device's probes to the component or circuit under test. The ohmmeter then sends a small current through the component and measures the voltage drop across it. From this data, the resistance can be calculated using Ohm's Law. This process is vital for troubleshooting, as it helps identify whether a component is functioning correctly or if it has failed. For example, consider a scenario where an electrician is repairing a household appliance. If the appliance is not working, the electrician may use an ohmmeter to check the resistance of various components, such as resistors, coils, or even the wires themselves. By measuring the resistance, the electrician can determine if any parts are short-circuited or open-circuited. This information is invaluable in pinpointing the exact problem and ensuring that repairs are made efficiently. Moreover, the ohmmeter is not only used in professional settings but also by hobbyists and DIY enthusiasts. Understanding how to use an ohmmeter can significantly enhance one’s ability to work with electronics. Many people engage in building their own circuits or modifying existing ones, and having the ability to measure resistance accurately allows for better design and functionality. In educational contexts, the ohmmeter serves as a practical tool for teaching students about electrical concepts. Students learn about resistance, current, and voltage in theory, but using an ohmmeter provides hands-on experience that reinforces these principles. It helps bridge the gap between theoretical knowledge and practical application, making the learning process more engaging and effective. In conclusion, the ohmmeter is a vital tool in both professional and educational settings. Its ability to measure resistance accurately makes it indispensable for anyone working with electrical systems. Whether you are an electrician diagnosing a faulty appliance, a hobbyist building your own circuits, or a student learning about electronics, the ohmmeter plays a crucial role in understanding and mastering the flow of electricity. By utilizing this instrument, individuals can ensure that their electrical projects are safe, efficient, and functional. Therefore, gaining proficiency in using an ohmmeter is an important skill for anyone interested in the field of electronics.

一个电阻表是电子和电气工程领域中使用的重要仪器。它测量材料或组件的电阻，这对于理解电流如何通过电路中的不同部分流动至关重要。电阻表基于欧姆定律工作，该定律指出，在两个点之间导体中流动的电流与这两个点之间的电压成正比，与它们之间的电阻成反比。这种关系对于诊断电气系统中的问题是基础。 使用电阻表时，通常将设备的探头连接到被测组件或电路上。然后，电阻表会向组件发送小电流，并测量其上的电压降。根据这些数据，可以使用欧姆定律计算电阻。这个过程对于故障排除至关重要，因为它有助于确定组件是否正常工作或是否已损坏。 例如，考虑一个电工修理家用电器的场景。如果电器无法工作，电工可能会使用电阻表检查各种组件的电阻，例如电阻器、线圈甚至电线本身。通过测量电阻，电工可以确定任何部件是否短路或开路。这些信息在准确找出问题并确保有效维修方面是无价的。 此外，电阻表不仅在专业环境中使用，也被爱好者和DIY爱好者所使用。了解如何使用电阻表可以显著增强个人处理电子产品的能力。许多人参与构建自己的电路或修改现有电路，而准确测量电阻的能力使得设计和功能更佳。 在教育环境中，电阻表作为一种实用工具，帮助学生学习电气概念。学生在理论上学习电阻、电流和电压，但使用电阻表提供的实践经验可以强化这些原理。它有助于弥合理论知识与实际应用之间的差距，使学习过程更加生动和有效。 总之，电阻表在专业和教育环境中都是一项重要工具。它准确测量电阻的能力使其对任何从事电气系统工作的人来说都是不可或缺的。无论你是一名电工在诊断故障电器，还是一名爱好者在构建自己的电路，或是一名学习电子学的学生，电阻表在理解和掌握电流流动方面都起着至关重要的作用。通过利用这一仪器，个人可以确保他们的电气项目安全、高效且功能齐全。因此，掌握使用电阻表的技能是任何对电子领域感兴趣的人都应具备的重要技能。