differential amplifier

简明释义

微分放大器；差动放大器

英英释义

例句

1.A differential amplifier 差分放大器 can reject common-mode signals, making it ideal for noisy environments.

由于能够抑制共模信号，differential amplifier 差分放大器非常适合用于嘈杂环境。

2.Engineers often use a differential amplifier 差分放大器 in sensor applications to improve measurement accuracy.

工程师们常在传感器应用中使用differential amplifier 差分放大器以提高测量精度。

3.In medical devices, a differential amplifier 差分放大器 can be used to amplify small biological signals.

在医疗设备中，differential amplifier 差分放大器可用于放大微小的生物信号。

4.The differential amplifier 差分放大器 is widely used in audio processing to enhance sound quality.

在音频处理领域，differential amplifier 差分放大器被广泛应用于提升音质。

5.The feedback loop in a differential amplifier 差分放大器 helps stabilize the gain and improve performance.

在differential amplifier 差分放大器中，反馈回路有助于稳定增益并提高性能。

作文

In the realm of electronics, the concept of a differential amplifier is fundamental to numerous applications, particularly in signal processing and instrumentation. A differential amplifier is an electronic device that amplifies the difference between two input voltage signals while suppressing any signals that are common to both inputs. This characteristic makes it an essential component in various electronic circuits, especially where precision is crucial.The operation of a differential amplifier can be understood through its basic configuration, which typically involves two input terminals and one output terminal. The two inputs are often labeled as the non-inverting terminal and the inverting terminal. When a voltage is applied to these terminals, the differential amplifier calculates the difference between the voltages and produces an output that is proportional to this difference. In essence, if one input receives a higher voltage than the other, the output will reflect this disparity, amplified by a certain gain factor.One of the most significant advantages of using a differential amplifier is its ability to reject common-mode signals. Common-mode signals refer to noise or interference that affects both input signals equally. In many real-world scenarios, external factors such as electromagnetic interference can introduce unwanted noise into electronic systems. However, due to the design of the differential amplifier, these common-mode signals are effectively canceled out, allowing for a cleaner and more accurate output.The applications of differential amplifiers are vast and varied. For instance, they are widely used in operational amplifiers (op-amps), which are versatile components found in many analog circuits. In medical instrumentation, differential amplifiers play a critical role in devices such as electrocardiograms (ECGs) and electromyograms (EMGs), where they help in accurately measuring bioelectric signals from the body. Furthermore, in communication systems, differential amplifiers are employed to enhance the quality of signals transmitted over long distances, ensuring that the information remains intact despite potential interference.Another notable application of differential amplifiers is in audio equipment. High-fidelity sound systems often utilize these amplifiers to improve sound quality by minimizing noise and distortion. By amplifying only the desired audio signals while rejecting background noise, differential amplifiers contribute to a clearer and more enjoyable listening experience.In conclusion, the differential amplifier is a vital component in modern electronics, providing a means to amplify signals with precision while effectively rejecting unwanted noise. Its unique ability to focus on the difference between two inputs makes it indispensable in various fields, from medical instrumentation to audio engineering. Understanding the principles and applications of differential amplifiers not only enhances our knowledge of electronic circuits but also emphasizes the importance of signal integrity in technology today.

在电子学领域，differential amplifier（差分放大器）的概念是众多应用的基础，尤其是在信号处理和仪器仪表方面。differential amplifier是一种电子设备，它放大两个输入电压信号之间的差异，同时抑制任何对两个输入信号都相同的信号。这一特性使得它成为各种电子电路中不可或缺的组件，特别是在精度至关重要的地方。differential amplifier的操作可以通过其基本配置来理解，通常涉及两个输入端和一个输出端。这两个输入通常标记为非反相端和反相端。当这些端口施加电压时，differential amplifier会计算电压之间的差异，并产生与该差异成比例的输出。实质上，如果一个输入接收到的电压高于另一个输入，那么输出将反映出这种差异，并被放大到一定的增益因子。使用differential amplifier的一个显著优势是其拒绝共模信号的能力。共模信号是指同时影响两个输入信号的噪声或干扰。在许多实际场景中，外部因素如电磁干扰可能会将不必要的噪声引入电子系统。然而，由于differential amplifier的设计，这些共模信号被有效地抵消，从而允许输出更加清晰和准确。differential amplifier的应用广泛多样。例如，它们在运算放大器（op-amps）中被广泛使用，运算放大器是许多模拟电路中的多功能组件。在医疗仪器中，differential amplifier在心电图（ECG）和肌电图（EMG）等设备中发挥着关键作用，帮助准确测量来自身体的生物电信号。此外，在通信系统中，differential amplifier被用来增强长距离传输的信号质量，确保信息在潜在干扰下保持完整。differential amplifier的另一个显著应用是在音频设备中。高保真音响系统通常利用这些放大器来改善音质，通过最小化噪声和失真来实现。通过仅放大所需的音频信号，同时拒绝背景噪声，differential amplifier有助于提供更清晰、更愉悦的听觉体验。总之，differential amplifier是现代电子学的重要组成部分，提供了一种以精确方式放大信号的手段，同时有效地拒绝不必要的噪声。它专注于两个输入之间的差异的独特能力，使其在各个领域中不可或缺，从医疗仪器到音频工程。理解differential amplifier的原理和应用不仅增强了我们对电子电路的知识，也强调了今天技术中信号完整性的重要性。