moving coil ammeter

简明释义

动圈式安培计

英英释义

例句

1.To read the current accurately, the moving coil ammeter should be calibrated regularly.

为了准确读取电流，动圈电流表应定期校准。

2.The technician used a moving coil ammeter to measure the current flowing through the circuit.

技术员使用动圈电流表测量电路中的电流。

3.When testing the battery, make sure to connect the moving coil ammeter correctly.

在测试电池时，请确保正确连接动圈电流表。

4.In electrical labs, a moving coil ammeter is essential for accurate current readings.

在电气实验室中，动圈电流表是获得准确电流读数的必备工具。

5.A moving coil ammeter can be used in both AC and DC circuits, but it's more commonly used for DC.

动圈电流表可以用于交流和直流电路，但更常用于直流电路。

作文

The moving coil ammeter is a fundamental instrument used in electrical engineering to measure the current flowing through a circuit. This device operates on the principle of electromagnetism, which allows it to provide accurate and reliable readings. Understanding how a moving coil ammeter works is essential for anyone involved in electronics or electrical maintenance. In essence, a moving coil ammeter consists of a coil of wire that is suspended in a magnetic field. When an electric current passes through the coil, it generates a magnetic field of its own, which interacts with the external magnetic field. This interaction causes the coil to rotate, and the degree of rotation is proportional to the amount of current flowing through the circuit. The rotation is usually indicated by a pointer moving over a calibrated scale. One of the main advantages of using a moving coil ammeter is its accuracy. These devices are known for their precision in measuring direct current (DC). They have a linear scale, which means that the readings are directly proportional to the current being measured. This property makes them particularly useful in laboratory settings where precise measurements are critical. However, it is important to note that moving coil ammeters are primarily designed for DC measurements. While there are modifications that allow them to measure alternating current (AC), these versions often require additional components, such as rectifiers, to convert AC into DC before measurement can take place. This limitation can be a drawback in situations where both AC and DC currents need to be measured frequently. Another aspect to consider is the construction of the moving coil ammeter. It typically includes a spring mechanism that returns the coil to its original position when the current ceases. This feature ensures that the device can provide consistent readings without any drift. Moreover, the sensitivity of the ammeter can be adjusted by changing the number of turns in the coil or by altering the strength of the magnetic field. In practical applications, moving coil ammeters are widely used in various fields, including telecommunications, automotive industries, and household appliances. For instance, technicians often use them to troubleshoot electrical systems, ensuring that the current levels are within safe operating ranges. Additionally, they are crucial in educational settings, helping students understand the principles of electricity and magnetism. Despite the emergence of digital ammeters, the moving coil ammeter remains popular due to its simplicity and reliability. Many engineers prefer the analog display because it allows for quick visual assessments of current levels, which can be advantageous in fast-paced environments. In conclusion, mastering the use of a moving coil ammeter is beneficial for anyone working with electrical systems. Its design, functionality, and application make it a vital tool in both professional and educational contexts, ensuring that users can accurately measure and understand electrical currents.

移动线圈电流表是一种在电气工程中用于测量电路中流动电流的基本仪器。该设备基于电磁学原理，能够提供准确可靠的读数。理解移动线圈电流表的工作原理对于任何参与电子或电气维护的人来说都是至关重要的。本质上，移动线圈电流表由一根悬挂在磁场中的线圈组成。当电流通过线圈时，它会产生自身的磁场，与外部磁场相互作用。这种相互作用导致线圈旋转，旋转的程度与流经电路的电流量成正比。旋转通常由指针在经过校准的刻度上移动来指示。使用移动线圈电流表的主要优点之一是其准确性。这些设备以其在测量直流电（DC）方面的精确性而闻名。它们具有线性刻度，这意味着读数与被测电流直接成比例。这一特性使它们在实验室环境中特别有用，因为在那里精确测量至关重要。然而，重要的是要注意，移动线圈电流表主要设计用于直流电测量。虽然有些改进版可以测量交流电（AC），但这些版本通常需要额外的组件，如整流器，以便在测量之前将交流电转换为直流电。这一限制可能在需要频繁测量交流和直流电流的情况下成为一个缺点。另一个需要考虑的方面是移动线圈电流表的构造。它通常包括一个弹簧机制，当电流停止时，将线圈返回到其原始位置。此功能确保设备能够提供一致的读数，而不会出现漂移。此外，可以通过改变线圈的圈数或调整磁场的强度来调节电流表的灵敏度。在实际应用中，移动线圈电流表广泛应用于电信、汽车工业和家用电器等各个领域。例如，技术人员经常使用它们来排除电气系统故障，确保电流水平在安全操作范围内。此外，它们在教育环境中也至关重要，帮助学生理解电和磁的原理。尽管数字电流表的出现，移动线圈电流表仍然因其简单性和可靠性而受到欢迎。许多工程师更喜欢模拟显示，因为它允许快速直观地评估电流水平，这在快节奏的环境中是有利的。总之，掌握移动线圈电流表的使用对任何从事电气系统工作的人都有益。其设计、功能和应用使其成为专业和教育环境中至关重要的工具，确保用户能够准确测量和理解电流。