tuned amplifier

简明释义

调谐放大器

英英释义

例句

1.The tuned amplifier in this circuit boosts the radio frequency signals.

这个电路中的调谐放大器增强了无线电频率信号。

2.In audio systems, a tuned amplifier is crucial for achieving high fidelity.

在音频系统中，调谐放大器对于实现高保真至关重要。

3.A tuned amplifier can improve the clarity of sound in a concert.

在音乐会上，调谐放大器可以提高声音的清晰度。

4.The radio uses a tuned amplifier to enhance weak signals.

这台收音机使用调谐放大器来增强微弱信号。

5.Engineers often design a tuned amplifier for specific frequency ranges.

工程师们通常为特定频率范围设计调谐放大器。

作文

In the realm of electronics, a variety of components and circuits play crucial roles in shaping the performance of devices we use daily. One such important component is the tuned amplifier, which is essential for enhancing specific frequencies while suppressing others. This capability makes it invaluable in numerous applications, particularly in radio frequency (RF) communications. The basic principle behind a tuned amplifier is to allow signals at a certain frequency to pass through while attenuating those at other frequencies. This selective amplification is achieved by using resonant circuits, typically composed of inductors and capacitors that are configured to resonate at the desired frequency.Tuned amplifiers can be found in various devices, from simple radios to complex communication systems. For instance, in a radio receiver, the tuned amplifier is used to amplify the weak signals received by the antenna. By tuning the circuit to the frequency of the desired station, the amplifier can significantly improve signal strength, making it easier for the listener to enjoy clear audio. Without the tuned amplifier, many radio stations would be difficult to hear due to the interference from other signals.The design of a tuned amplifier involves careful consideration of several factors, including bandwidth, gain, and stability. Bandwidth refers to the range of frequencies over which the amplifier can operate effectively. A narrow bandwidth allows for better selectivity but may limit the range of frequencies that can be amplified. Conversely, a wider bandwidth can accommodate more frequencies but may lead to unwanted noise and interference.Gain is another critical parameter, representing the ratio of output power to input power. A high-gain tuned amplifier is often desirable in applications where the input signal is weak. However, achieving high gain can sometimes compromise stability, leading to oscillations or distortion in the output signal. Thus, engineers must strike a balance between gain and stability when designing a tuned amplifier.Moreover, the choice of components used in the construction of a tuned amplifier can greatly influence its performance. High-quality capacitors and inductors with low resistance are preferred to minimize losses and enhance efficiency. In modern designs, integrated circuits (ICs) have become popular, as they offer compactness and improved performance compared to traditional discrete components.In summary, the tuned amplifier is a vital component in the field of electronics, particularly in communication systems. Its ability to selectively amplify specific frequencies while rejecting others makes it indispensable for ensuring clear and reliable signal transmission. As technology continues to evolve, the design and application of tuned amplifiers will likely advance, leading to even more efficient and effective solutions in various fields. Understanding the principles and functions of a tuned amplifier can provide valuable insights into the workings of many electronic devices we rely on today.

在电子学领域，各种组件和电路在塑造我们日常使用的设备性能方面发挥着至关重要的作用。其中一个重要组件是调谐放大器，它对于增强特定频率而抑制其他频率至关重要。这种能力使其在许多应用中不可或缺，特别是在射频（RF）通信中。调谐放大器的基本原理是允许特定频率的信号通过，同时衰减其他频率的信号。这种选择性放大是通过使用谐振电路来实现的，通常由配置为在所需频率上谐振的电感器和电容器组成。调谐放大器可以在各种设备中找到，从简单的收音机到复杂的通信系统。例如，在收音机接收器中，调谐放大器用于放大天线接收到的微弱信号。通过将电路调谐到所需电台的频率，放大器可以显著提高信号强度，使听众更容易享受清晰的音频。如果没有调谐放大器，许多广播电台由于其他信号的干扰将很难听到。调谐放大器的设计涉及对多个因素的仔细考虑，包括带宽、增益和稳定性。带宽是指放大器可以有效工作的频率范围。窄带宽允许更好的选择性，但可能限制可以放大的频率范围。相反，较宽的带宽可以容纳更多频率，但可能导致不必要的噪声和干扰。增益是另一个关键参数，表示输出功率与输入功率的比率。在输入信号微弱的应用中，通常希望获得高增益的调谐放大器。然而，实现高增益有时会妨碍稳定性，导致输出信号中的振荡或失真。因此，工程师在设计调谐放大器时必须在增益和稳定性之间取得平衡。此外，构建调谐放大器时所用组件的选择也会极大影响其性能。优质的电容器和低电阻的电感器是首选，以最小化损耗并提高效率。在现代设计中，集成电路（IC）变得越来越受欢迎，因为它们提供了紧凑性和比传统分立组件更好的性能。总之，调谐放大器是电子学领域的重要组成部分，特别是在通信系统中。它选择性地放大特定频率而拒绝其他频率的能力使其在确保清晰可靠的信号传输方面不可或缺。随着技术的不断发展，调谐放大器的设计和应用可能会进一步发展，从而在各个领域提供更高效和有效的解决方案。了解调谐放大器的原理和功能可以为我们今天依赖的许多电子设备的工作原理提供宝贵的见解。