fixed resistor

简明释义

固定电阻器

英英释义

例句

1.In a basic electronic circuit, a fixed resistor 固定电阻器 is often used to limit the current flowing through a component.

在基本的电子电路中，固定电阻器 fixed resistor 通常用于限制流经组件的电流。

2.A fixed resistor 固定电阻器 can be used in series with an LED to prevent it from burning out.

一个固定电阻器 fixed resistor 可以与LED串联使用，以防止其烧毁。

3.In audio equipment, fixed resistors 固定电阻器 help control the gain of the amplifier.

在音频设备中，固定电阻器 fixed resistors 帮助控制放大器的增益。

4.Replacing a broken fixed resistor 固定电阻器 in a circuit board can restore its functionality.

更换电路板上损坏的固定电阻器 fixed resistor 可以恢复其功能。

5.When designing a voltage divider, you will need two fixed resistors 固定电阻器 to achieve the desired output voltage.

在设计电压分压器时，您需要两个固定电阻器 fixed resistors 来实现所需的输出电压。

作文

In the world of electronics, components play a crucial role in determining the performance and functionality of circuits. One such essential component is the fixed resistor, which is widely used in various applications. A fixed resistor is a passive electrical component that provides a specific resistance value in a circuit. Unlike variable resistors, which can change their resistance based on external factors, a fixed resistor maintains a constant resistance. This characteristic makes it an indispensable part of many electronic devices.The primary function of a fixed resistor is to limit the flow of electric current in a circuit. By doing so, it helps protect sensitive components from damage caused by excessive current. For example, in an LED circuit, a fixed resistor is often used to ensure that the current passing through the LED does not exceed its maximum rating, thereby preventing burnout.Additionally, fixed resistors are used for voltage division in circuits. When multiple resistors are connected in series or parallel, they can divide the total voltage across them, allowing designers to obtain specific voltage levels required for different parts of a circuit. This feature is particularly useful in applications where different components require different operating voltages.Another important application of fixed resistors is in biasing transistors. In amplifier circuits, for instance, fixed resistors are used to set the operating point of transistors, ensuring they function efficiently and effectively. Proper biasing is critical for achieving the desired gain and linearity in amplification, making fixed resistors vital for audio and radio frequency applications.The construction of a fixed resistor typically involves a resistive material, such as carbon, metal film, or wire wound around an insulating substrate. The choice of material affects the resistor's characteristics, including tolerance, temperature coefficient, and power rating. Different types of fixed resistors are available, each designed for specific applications, ranging from small surface mount resistors to larger power resistors.In summary, the fixed resistor is a fundamental component in electronic circuits, serving various critical functions, including current limiting, voltage division, and transistor biasing. Its ability to maintain a constant resistance makes it an essential tool for engineers and designers in the field of electronics. Understanding the role and applications of fixed resistors is crucial for anyone looking to delve deeper into the world of electronics and circuit design. As technology continues to advance, the importance of these simple yet effective components will remain significant in ensuring the reliability and efficiency of electronic devices.

在电子世界中，组件在决定电路的性能和功能方面发挥着至关重要的作用。其中一个基本组件就是固定电阻器，它广泛应用于各种场合。固定电阻器是一种被动电气元件，在电路中提供特定的电阻值。与可以根据外部因素改变电阻的可变电阻器不同，固定电阻器保持恒定的电阻值。这一特性使其成为许多电子设备中不可或缺的一部分。固定电阻器的主要功能是限制电路中的电流流动。通过这样做，它帮助保护敏感元件免受过大电流造成的损坏。例如，在LED电路中，通常使用固定电阻器来确保通过LED的电流不超过其最大额定值，从而防止烧毁。此外，固定电阻器还用于电路中的电压分配。当多个电阻器串联或并联连接时，它们可以将总电压分配到各自的电阻上，使设计者能够获得不同电路部分所需的特定电压水平。这一特性在不同组件需要不同工作电压的应用中尤为有用。固定电阻器的另一个重要应用是在晶体管偏置中。例如，在放大器电路中，通常使用固定电阻器来设置晶体管的工作点，确保它们高效、有效地工作。适当的偏置对于实现所需的增益和线性度至关重要，使得固定电阻器在音频和射频应用中变得非常重要。固定电阻器的构造通常涉及一种电阻材料，例如碳、金属膜或缠绕在绝缘基材上的导线。材料的选择影响电阻器的特性，包括公差、温度系数和功率额定值。不同类型的固定电阻器可供选择，每种设计用于特定应用，从小型表面贴装电阻器到较大的功率电阻器。总之，固定电阻器是电子电路中的基本组件，具有多种关键功能，包括电流限制、电压分配和晶体管偏置。它保持恒定电阻的能力使其成为工程师和设计师在电子领域中的重要工具。理解固定电阻器的作用和应用对于任何希望深入了解电子和电路设计的人来说都是至关重要的。随着技术的不断进步，这些简单而有效的组件的重要性将继续在确保电子设备的可靠性和效率中发挥重要作用。