AM receiver

简明释义

调幅收音机

英英释义

例句

1.The AM receiver can pick up signals from hundreds of miles away.

这个调幅接收器可以接收到数百英里外的信号。

2.I bought a new AM receiver for better radio clarity.

我买了一个新的调幅接收器以获得更清晰的广播。

3.You need to tune the AM receiver to the correct frequency.

你需要将调幅接收器调到正确的频率。

4.Many vintage cars come with an AM receiver installed.

许多老爷车都配有安装好的调幅接收器。

5.The AM receiver is essential for listening to talk radio.

收听脱口秀广播时，调幅接收器是必不可少的。

作文

In the world of radio communications, the term AM receiver refers to a device that is specifically designed to receive amplitude modulation (AM) signals. These signals are used in various forms of broadcasting, including traditional radio stations that transmit music, news, and talk shows. Understanding how an AM receiver works can provide insights into the evolution of communication technology and its impact on society.The basic principle behind an AM receiver involves the detection of variations in the amplitude of a carrier wave. When a radio station broadcasts an AM signal, it modulates the amplitude of the carrier wave according to the audio signal being transmitted. The AM receiver captures this modulated signal using an antenna and then processes it to extract the original audio content.One of the key components of an AM receiver is the tuner, which allows users to select their desired frequency. This is crucial because multiple radio stations operate on different frequencies, and the tuner ensures that the AM receiver only picks up the intended signal. Once the signal is tuned in, it passes through a demodulator that converts the amplitude variations back into an audio waveform, making it audible to the listener.The simplicity of the AM receiver design has contributed to its longevity in the field of radio communications. Unlike Frequency Modulation (FM) receivers, which require more complex circuitry to process signals, AM receivers can be built using relatively simple electronic components. This has made them accessible for both commercial and personal use, leading to their widespread adoption.Despite the rise of digital broadcasting and streaming services, AM receivers continue to hold a significant place in many households, particularly in rural areas where access to the internet may be limited. They provide a reliable means of receiving information and entertainment, especially during emergencies when other forms of communication may fail. For instance, during natural disasters, local AM radio stations often serve as vital sources of information, broadcasting updates and safety instructions to the public.Furthermore, the nostalgic appeal of AM receivers cannot be overlooked. Many people have fond memories of listening to their favorite radio shows or music on these devices, which often evoke a sense of connection to the past. As technology advances, there is a growing interest in retro gadgets, and the AM receiver has become a symbol of a simpler time in media consumption.In conclusion, the AM receiver is more than just a device for receiving radio signals; it represents a significant chapter in the history of communication technology. Its ability to deliver information and entertainment reliably has ensured its place in the hearts of many listeners. As we move further into the digital age, it is essential to recognize and appreciate the role that AM receivers have played in shaping our understanding of media and communication. Whether for practical use or nostalgic enjoyment, the AM receiver remains a beloved tool that connects us to the world around us.

在无线电通信的世界中，术语AM接收器指的是一种专门设计用于接收调幅（AM）信号的设备。这些信号用于各种广播形式，包括传统的广播电台，传输音乐、新闻和脱口秀。理解一个AM接收器如何工作可以提供对通信技术演变及其对社会影响的深入见解。AM接收器的基本原理涉及检测载波波形的幅度变化。当广播电台广播AM信号时，它根据所传输的音频信号调制载波波形的幅度。AM接收器通过天线捕获这一调制信号，然后处理它以提取原始音频内容。AM接收器的一个关键组成部分是调谐器，它允许用户选择所需的频率。这一点至关重要，因为多个广播电台在不同的频率上运行，而调谐器确保AM接收器仅接收预期的信号。一旦信号被调谐，它就会通过解调器，解调器将幅度变化转换回音频波形，使其对听众可听。AM接收器设计的简单性使其在无线电通信领域得以长期存在。与需要更复杂电路来处理信号的频率调制（FM）接收器不同，AM接收器可以使用相对简单的电子元件构建。这使得它们对于商业和个人使用都变得可获取，从而导致它们的广泛采用。尽管数字广播和流媒体服务的兴起，AM接收器仍然在许多家庭中占有重要地位，特别是在互联网接入可能有限的农村地区。它们提供了一种可靠的信息和娱乐接收手段，尤其是在其他通信形式可能失效的紧急情况下。例如，在自然灾害期间，当地的AM广播电台通常作为信息的重要来源，向公众广播更新和安全指示。此外，AM接收器的怀旧魅力也不容忽视。许多人对在这些设备上收听自己喜欢的广播节目或音乐有着美好的回忆，这常常唤起与过去的联系。随着技术的进步，人们对复古小工具的兴趣日益增长，AM接收器已成为媒体消费中更简单时代的象征。总之，AM接收器不仅仅是接收无线电信号的设备；它代表了通信技术历史中的重要一章。它可靠地传递信息和娱乐的能力确保了它在许多听众心中的地位。随着我们进一步进入数字时代，认识和欣赏AM接收器在塑造我们对媒体和通信理解中的作用是至关重要的。无论是出于实用用途还是怀旧享受，AM接收器仍然是一个受人喜爱的工具，将我们与周围的世界连接起来。