fixed resistor

简明释义

固定电阻器

英英释义

例句

1.Engineers often choose a fixed resistor (固定电阻器) for applications where variable resistance is not needed.

工程师们通常选择固定电阻器（固定电阻器）用于不需要可变电阻的应用。

2.A fixed resistor (固定电阻器) can be used in series with a capacitor to create a low-pass filter.

一个固定电阻器（固定电阻器）可以与电容器串联使用，以创建低通滤波器。

3.The fixed resistor (固定电阻器) in this circuit ensures that the current remains stable regardless of temperature changes.

这个电路中的固定电阻器（固定电阻器）确保电流保持稳定，无论温度变化如何。

4.In a simple LED circuit, the current is limited by a fixed resistor (固定电阻器) to prevent damage to the LED.

在一个简单的LED电路中，电流通过一个固定电阻器（固定电阻器）来限制，以防止损坏LED。

5.When designing a voltage divider, you can use a fixed resistor (固定电阻器) to achieve the desired output voltage.

在设计电压分压器时，可以使用一个固定电阻器（固定电阻器）来实现所需的输出电压。

作文

Understanding the concept of a fixed resistor is essential for anyone interested in electronics and electrical engineering. A fixed resistor is a type of resistor that has a constant resistance value. This means that it does not change with voltage or current variations, making it a reliable component in various electronic circuits. The primary function of a fixed resistor is to limit the amount of current that can flow through a circuit, thus protecting sensitive components from damage due to excessive current. In practical applications, fixed resistors are used in a wide range of devices, from simple circuits to complex systems. For example, in a basic LED circuit, a fixed resistor is often included to ensure that the LED receives the appropriate amount of current. Without this resistor, the LED could draw too much current and burn out quickly. Similarly, in audio equipment, fixed resistors are used to control the volume levels and prevent distortion. There are several types of fixed resistors, including carbon film, metal film, and wire-wound resistors. Each type has its own advantages and disadvantages, depending on the specific requirements of the circuit. Carbon film resistors are commonly used due to their low cost and decent accuracy, while metal film resistors offer higher precision and stability. Wire-wound resistors, on the other hand, are used in high-power applications due to their ability to handle large amounts of heat. When selecting a fixed resistor for a particular application, it is crucial to consider factors such as resistance value, power rating, tolerance, and temperature coefficient. The resistance value is measured in ohms and determines how much current will flow through the resistor when a voltage is applied. The power rating indicates the maximum amount of power the resistor can dissipate without being damaged. Tolerance refers to the accuracy of the resistor's value, while the temperature coefficient indicates how much the resistance changes with temperature fluctuations. In conclusion, a fixed resistor plays a vital role in electronic circuits by providing stable resistance and protecting components from excessive current. Understanding how to choose and use fixed resistors is fundamental for anyone working in the field of electronics. As technology continues to advance, the importance of fixed resistors will remain significant, ensuring that our devices operate safely and efficiently.

理解固定电阻器的概念对于任何对电子和电气工程感兴趣的人来说都是至关重要的。固定电阻器是一种具有恒定电阻值的电阻器。这意味着它的电阻值不会随着电压或电流的变化而改变，使其成为各种电子电路中可靠的元件。固定电阻器的主要功能是限制电路中可以流过的电流，从而保护敏感组件免受过大电流损坏。 在实际应用中，固定电阻器被广泛用于从简单电路到复杂系统的各种设备中。例如，在一个基本的LED电路中，通常会包含一个固定电阻器以确保LED接收到适当的电流。如果没有这个电阻器，LED可能会吸收过多的电流并迅速烧坏。同样，在音频设备中，固定电阻器用于控制音量水平并防止失真。 有几种类型的固定电阻器，包括碳膜电阻器、金属膜电阻器和绕线电阻器。根据电路的具体要求，每种类型都有其自身的优缺点。由于其低成本和良好的精度，碳膜电阻器被广泛使用，而金属膜电阻器则提供更高的精度和稳定性。另一方面，绕线电阻器由于能够处理大量热量而用于高功率应用。 在为特定应用选择固定电阻器时，考虑电阻值、功率额定值、容差和温度系数等因素至关重要。电阻值以欧姆为单位，决定了施加电压时电阻器中将流过多少电流。功率额定值指示电阻器在不损坏的情况下可以散发的最大功率。容差指电阻器值的准确性，而温度系数则指示电阻值在温度波动下的变化程度。 总之，固定电阻器在电子电路中发挥着至关重要的作用，通过提供稳定的电阻并保护组件免受过大电流的影响。了解如何选择和使用固定电阻器是任何从事电子领域工作的人必须掌握的基本知识。随着科技的不断进步，固定电阻器的重要性将继续显著，确保我们的设备安全高效地运行。