differential amplifier

简明释义

差动放大器

英英释义

例句

1.The differential amplifier 差分放大器 design helps in achieving high common-mode rejection ratio (CMRR).

设计差分放大器 differential amplifier 有助于实现高共模抑制比（CMRR）。

2.In instrumentation, a differential amplifier 差分放大器 can amplify small voltage differences.

在仪器仪表中，差分放大器 differential amplifier 可以放大微小的电压差。

3.Engineers often use a differential amplifier 差分放大器 to eliminate noise from sensor signals.

工程师们常常使用差分放大器 differential amplifier 来消除传感器信号中的噪声。

4.A typical application of a differential amplifier 差分放大器 is in medical devices for ECG signal processing.

一个典型的差分放大器 differential amplifier 应用是在医疗设备中进行心电图信号处理。

5.The differential amplifier 差分放大器 is crucial in many audio applications to improve sound quality.

在许多音频应用中，差分放大器 differential amplifier 是至关重要的，以提高音质。

作文

In the realm of electronics, the concept of a differential amplifier is fundamental to understanding how signals can be processed and amplified effectively. A differential amplifier is an electronic device that amplifies the difference between two input voltage signals while rejecting any signals that are common to both inputs. This property makes it incredibly useful in various applications, particularly in environments where noise and interference can distort signal quality.One of the primary uses of a differential amplifier is in operational amplifiers, which are widely used in signal processing, filtering, and feedback systems. In these applications, the differential amplifier serves as the building block for complex circuits that require precise control over signal amplification. By focusing on the difference between the input signals, the differential amplifier enhances the desired information while minimizing the impact of unwanted noise.The design of a differential amplifier typically involves multiple transistors or operational amplifiers configured in such a way that they create a high degree of gain for the differential input signal. The output of the differential amplifier is proportional to the difference between the two input voltages, which can be expressed mathematically as V_out = A(V_in+ - V_in-), where A is the gain of the amplifier, V_in+ is the non-inverting input, and V_in- is the inverting input. This formula highlights the key feature of the differential amplifier: its ability to amplify small differences in voltage while ignoring large common-mode signals.In practical terms, this means that a differential amplifier can be used in various applications, such as audio equipment, sensor interfaces, and medical instrumentation. For instance, in medical devices like electrocardiograms (ECGs), differential amplifiers are crucial for accurately measuring the electrical activity of the heart. They help isolate the weak electrical signals generated by the heart from the much larger noise signals that can arise from other sources, such as muscle activity or electromagnetic interference.Moreover, the advantage of using a differential amplifier extends beyond just noise reduction. It also allows for improved linearity and dynamic range in signal processing. By eliminating common-mode signals, the differential amplifier enables a clearer representation of the desired signal, which is essential in high-fidelity audio systems and precision measurement instruments.In conclusion, the differential amplifier is an essential component in modern electronics, providing a means to amplify small signals in the presence of noise and interference. Its ability to focus on the difference between two input signals makes it invaluable in a wide range of applications, from medical devices to audio processing. Understanding the principles and applications of the differential amplifier not only enhances our knowledge of electronic circuits but also underscores the importance of signal integrity in technology today.

在电子学领域，differential amplifier（差分放大器）的概念对于理解信号如何有效处理和放大至关重要。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，同时拒绝对两个输入都共同存在的任何信号。这一特性使其在各种应用中非常有用，特别是在噪声和干扰可能扭曲信号质量的环境中。differential amplifier 的主要用途之一是在运算放大器中，运算放大器广泛用于信号处理、滤波和反馈系统。在这些应用中，differential amplifier 作为复杂电路的基础构件，要求对信号放大进行精确控制。通过关注输入信号之间的差异，differential amplifier 增强所需的信息，同时最小化不必要噪声的影响。differential amplifier 的设计通常涉及多个晶体管或运算放大器以特定方式配置，从而为差分输入信号创造高增益。differential amplifier 的输出与两个输入电压之间的差异成正比，可以用数学公式表示为 V_out = A(V_in+ - V_in-)，其中 A 是放大器的增益，V_in+ 是非反相输入，V_in- 是反相输入。这个公式突出了differential amplifier 的关键特征：它能够放大电压的小差异，同时忽略大的共模信号。从实际角度来看，这意味着 differential amplifier 可以用于各种应用，如音频设备、传感器接口和医疗仪器。例如，在心电图（ECG）等医疗设备中，differential amplifier 对于准确测量心脏的电活动至关重要。它们帮助从其他来源产生的更大噪声信号中隔离出心脏产生的微弱电信号，例如肌肉活动或电磁干扰。此外，使用 differential amplifier 的优势不仅限于噪声减少。它还允许在信号处理中提高线性度和动态范围。通过消除共模信号，differential amplifier 能够更清晰地表示所需信号，这在高保真音频系统和精密测量仪器中至关重要。总之，differential amplifier 是现代电子产品中的一个重要组件，提供了一种在噪声和干扰存在的情况下放大微弱信号的方法。它专注于两个输入信号之间的差异，使其在从医疗设备到音频处理的广泛应用中不可或缺。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。