keying circuit

简明释义

键控电路

英英释义

例句

1.During the test, the keying circuit 键控电路 failed to activate at the required frequency.

在测试期间，keying circuit 键控电路 未能在所需频率下激活。

2.The engineer designed a new keying circuit 键控电路 to improve signal clarity.

工程师设计了一种新的keying circuit 键控电路以提高信号清晰度。

3.The technician explained how the keying circuit 键控电路 works in the radio transmitter.

技术员解释了无线电发射器中如何工作的keying circuit 键控电路。

4.To prevent interference, the keying circuit 键控电路 must be properly calibrated.

为了防止干扰，keying circuit 键控电路 必须正确校准。

5.In digital communication, the keying circuit 键控电路 is essential for modulating signals.

在数字通信中，keying circuit 键控电路 对于调制信号是必不可少的。

作文

In the world of electronics and telecommunications, understanding the functionality of various components is crucial. One such component is the keying circuit, which plays a vital role in the operation of communication devices. A keying circuit is essentially an electronic circuit that controls the transmission of signals by 'keying' or turning on and off the flow of electrical current. This function is particularly important in radio communications, where it allows operators to send Morse code or voice signals over the airwaves.The design of a keying circuit can vary depending on the application, but its primary purpose remains the same: to modulate the signal being transmitted. For instance, in amateur radio, a simple keying circuit might consist of a switch that connects the transmitter to the antenna when pressed, allowing the operator to send their message. More sophisticated keying circuits might include features like automatic timing for Morse code transmission, ensuring that the signals are sent at the correct intervals.Understanding how a keying circuit works requires some knowledge of basic electronics. Typically, the circuit will include a power source, a switch, and a load, which in the case of radio transmission, is usually the transmitter itself. When the switch is closed, current flows from the power source to the transmitter, enabling it to send a signal. When the switch is opened, the current stops, and the transmission ceases.Moreover, the keying circuit can be integrated into more complex systems, such as those used in digital communications. In these systems, the keying circuit may work in conjunction with microcontrollers and software to manage the timing and modulation of the signals being sent. This integration allows for greater flexibility and control over the communication process, enabling more efficient data transmission.In addition to its technical functions, the keying circuit also has historical significance in the development of communication technology. The use of keying circuits dates back to the invention of the telegraph, where operators would use a simple key to send messages over long distances. This method laid the groundwork for modern communication techniques, illustrating how far we have come since those early days. In conclusion, the keying circuit is a fundamental component in the field of electronics and telecommunications. Its ability to control the flow of electrical signals makes it indispensable for effective communication. As technology continues to advance, the principles behind the keying circuit remain relevant, demonstrating the importance of understanding these basic concepts in the ever-evolving landscape of electronics. Whether you are an amateur radio enthusiast or a professional in the field, grasping the workings of a keying circuit will enhance your ability to communicate effectively and innovate within this exciting domain.

在电子和电信的世界中，理解各种组件的功能至关重要。其中一个组件是键控电路，它在通信设备的操作中发挥着重要作用。键控电路本质上是一个电子电路，通过“键控”或开关电流的流动来控制信号的传输。这一功能在无线电通信中尤为重要，因为它允许操作员通过无线电波发送摩尔斯电码或语音信号。键控电路的设计可能因应用而异，但其主要目的保持不变：调制所传输的信号。例如，在业余无线电中，一个简单的键控电路可能由一个开关组成，当按下时将发射机连接到天线，从而允许操作员发送消息。更复杂的键控电路可能包括自动定时功能，以确保摩尔斯电码信号以正确的间隔发送。要理解键控电路的工作原理，需要一些基础电子学知识。通常，该电路将包括电源、开关和负载，而在无线电传输的情况下，负载通常是发射机本身。当开关闭合时，电流从电源流向发射机，使其能够发送信号。当开关打开时，电流停止，传输也随之停止。此外，键控电路还可以集成到更复杂的系统中，例如数字通信中。在这些系统中，键控电路可能与微控制器和软件协同工作，以管理发送信号的时序和调制。这种集成允许在通信过程中实现更大的灵活性和控制能力，从而实现更高效的数据传输。除了其技术功能外，键控电路在通信技术的发展中也具有历史意义。键控电路的使用可以追溯到电报的发明，那时操作员使用简单的开关将消息发送到远方。这种方法为现代通信技术奠定了基础，说明了自那些早期以来我们走过的漫长道路。总之，键控电路是电子和电信领域的基本组件。它控制电信号流动的能力使其在有效通信中不可或缺。随着技术的不断进步，键控电路背后的原理依然相关，展示了在快速发展的电子领域中理解这些基本概念的重要性。无论您是业余无线电爱好者还是该领域的专业人士，掌握键控电路的工作原理都将增强您有效沟通和在这一激动人心的领域内创新的能力。