power amplifier

简明释义

功率放大器

英英释义

例句

1.The power amplifier 功率放大器 increased the sound output of the speaker significantly.

这个功率放大器提高了扬声器的声音输出。

2.A high-quality power amplifier 功率放大器 is essential for professional music production.

高质量的功率放大器对于专业音乐制作至关重要。

3.The technician repaired the faulty power amplifier 功率放大器 in less than an hour.

技术人员在不到一个小时内修好了故障的功率放大器。

4.We need a new power amplifier 功率放大器 to support the upgraded home theater system.

我们需要一个新的功率放大器来支持升级后的家庭影院系统。

5.In our audio system, the power amplifier 功率放大器 is crucial for delivering clear sound at high volumes.

在我们的音频系统中，功率放大器对于在高音量下提供清晰的声音至关重要。

作文

In the world of electronics, a crucial component that plays a significant role in audio and radio frequency applications is the power amplifier. A power amplifier is a device that takes a weak electrical signal and amplifies it to a level that can drive a loudspeaker or transmit radio signals effectively. This process is essential for ensuring that sound waves produced by speakers are strong enough to fill a room or that radio signals can reach far distances without losing clarity. The functioning of a power amplifier is based on the principles of signal amplification. When an audio signal is generated, it is typically at a low voltage level. This is insufficient to power speakers, which require a higher voltage to produce sound at acceptable volume levels. The power amplifier increases this voltage, allowing the sound to be heard clearly and loudly. There are various types of power amplifiers, including Class A, Class B, Class AB, and Class D amplifiers. Each class has its own unique characteristics, efficiency levels, and applications. For instance, Class A amplifiers are known for their high fidelity and linearity but are less efficient, often resulting in more heat generation. On the other hand, Class D amplifiers are highly efficient and are commonly used in portable devices due to their smaller size and lighter weight. The importance of a power amplifier extends beyond just audio applications. In telecommunications, power amplifiers are essential for boosting the strength of signals transmitted over long distances. Without adequate amplification, signals would weaken significantly, leading to poor communication quality. This is particularly important in mobile phones and broadcasting stations, where clear and strong signals are necessary for effective communication. Moreover, the design and quality of a power amplifier can greatly affect the overall performance of a sound system or communication network. High-quality amplifiers can enhance sound clarity, reduce distortion, and improve the listening experience. Consequently, audiophiles often invest in high-end power amplifiers to ensure that they get the best possible audio output from their systems. In summary, a power amplifier is an indispensable component in both audio and communication technologies. Its ability to amplify weak signals to usable levels makes it crucial for delivering high-quality sound and reliable communication. As technology continues to advance, the design and functionality of power amplifiers will likely evolve, leading to even better performance and efficiency in various applications.

在电子世界中，一个在音频和无线电频率应用中扮演重要角色的关键组件是功率放大器。功率放大器是一种将微弱电信号放大到足以驱动扬声器或有效传输无线电信号的设备。这个过程对于确保扬声器产生的声波强度足够以填满一个房间，或者无线电信号能够在不失去清晰度的情况下达到远距离至关重要。功率放大器的工作原理基于信号放大的原理。当生成音频信号时，通常处于低电压水平。这不足以为扬声器提供动力，而扬声器需要更高的电压才能在可接受的音量水平下发出声音。功率放大器提高了这个电压，使声音能够清晰而响亮地被听到。有多种类型的功率放大器，包括A类、B类、AB类和D类放大器。每种类别都有其独特的特性、效率水平和应用。例如，A类放大器以其高保真度和线性著称，但效率较低，往往导致更多的热量产生。另一方面，D类放大器效率很高，常用于便携式设备，因为它们体积更小、重量更轻。功率放大器的重要性不仅限于音频应用。在电信中，功率放大器对于增强长距离传输信号的强度至关重要。没有足够的放大，信号会显著减弱，导致通信质量差。这在手机和广播站中尤为重要，因为清晰和强劲的信号对于有效沟通是必要的。此外，功率放大器的设计和质量可以极大地影响音响系统或通信网络的整体性能。高质量的放大器可以增强声音的清晰度，减少失真，并改善听觉体验。因此，音响爱好者常常投资于高端功率放大器，以确保他们从系统中获得最佳的音频输出。总之，功率放大器是音频和通信技术中不可或缺的组成部分。它能够将微弱信号放大到可用水平，使其对于提供高质量声音和可靠通信至关重要。随着技术的不断进步，功率放大器的设计和功能可能会不断演变，从而在各种应用中带来更好的性能和效率。