self-excited circuit

简明释义

自励电路

英英释义

例句

1.Engineers often use a self-excited circuit to improve the stability of power supplies.

工程师们通常使用自激电路来提高电源的稳定性。

2.The self-excited circuit in this system adjusts the output based on load conditions automatically.

该系统中的自激电路会根据负载条件自动调整输出。

3.A self-excited circuit can be found in various types of alternators used in vehicles.

在车辆使用的各种类型的交流发电机中都可以找到自激电路。

4.In many applications, a self-excited circuit is preferred for its simplicity and reliability.

在许多应用中，自激电路因其简单性和可靠性而受到青睐。

5.The design of the generator includes a self-excited circuit, which allows it to maintain voltage without an external source.

发电机的设计包括一个自激电路，这使得它能够在没有外部电源的情况下维持电压。

作文

In the field of electrical engineering, one of the fascinating concepts is the self-excited circuit. A self-excited circuit is a type of electronic circuit that generates its own excitation or power without requiring an external source. This concept is particularly significant in the design and operation of various types of generators and oscillators. Understanding how a self-excited circuit works can provide insights into the broader principles of feedback and stability in electronic systems.The principle behind a self-excited circuit lies in its ability to utilize its own output to sustain its operation. For instance, consider a simple generator that uses a small amount of its own output voltage to energize its field windings. This feedback mechanism allows the generator to maintain a stable output voltage even under varying load conditions. The self-excited circuit is thus able to operate independently, which makes it highly efficient and reliable.One common application of self-excited circuits is found in alternators. In an alternator, the rotor creates a magnetic field that induces voltage in the stator windings. A portion of this induced voltage is fed back to the rotor to sustain the magnetic field. This self-regulating feature ensures that the alternator can adjust its output based on the demand from the connected load. Without the self-excited circuit mechanism, the alternator would require constant external adjustments to maintain its output, making it less practical for real-world applications.Moreover, self-excited circuits are also utilized in various oscillator designs, where they generate continuous waveforms without needing an external signal. For example, in a Colpitts oscillator, the feedback loop provided by capacitive and inductive elements allows the circuit to oscillate at a specific frequency. The self-excited circuit nature of this oscillator means it can produce stable frequencies for applications such as radio transmission and signal processing.While the advantages of self-excited circuits are numerous, there are also challenges associated with their design. One of the primary concerns is ensuring stability in the feedback loop. If the feedback is too strong, it can lead to oscillations that are too large, potentially damaging the circuit. Conversely, if the feedback is too weak, the circuit may not be able to sustain itself. Therefore, engineers must carefully balance the components within a self-excited circuit to achieve optimal performance.In conclusion, the self-excited circuit is a remarkable example of how electronic systems can harness feedback mechanisms to operate efficiently and autonomously. Its applications in generators and oscillators highlight the importance of self-regulation in modern technology. As we continue to advance in the field of electronics, understanding the principles behind self-excited circuits will remain crucial for developing innovative solutions that meet the demands of our ever-evolving technological landscape.

在电气工程领域，有一个引人入胜的概念是自激电路。自激电路是一种电子电路，它无需外部电源即可生成自己的激励或电力。这个概念在各种类型的发电机和振荡器的设计和操作中尤为重要。理解自激电路的工作原理可以深入了解电子系统中的反馈和稳定性等更广泛的原则。自激电路的原理在于其利用自身的输出维持其操作。例如，考虑一个简单的发电机，它使用少量自身的输出电压来给其场绕组供电。这种反馈机制使发电机能够在不同负载条件下保持稳定的输出电压。因此，自激电路能够独立运行，这使其高效且可靠。自激电路的一个常见应用是在交流发电机中。在交流发电机中，转子产生的磁场在定子绕组中感应出电压。部分感应电压反馈到转子，以维持磁场。这种自我调节特性确保发电机可以根据连接负载的需求调整其输出。如果没有自激电路机制，发电机将需要不断的外部调整来维持其输出，使其在实际应用中不够实用。此外，自激电路还用于各种振荡器设计中，它们可以在没有外部信号的情况下生成连续波形。例如，在Colpitts振荡器中，由电容和电感元件提供的反馈环路使电路以特定频率振荡。该振荡器的自激电路特性意味着它可以为无线电传输和信号处理等应用产生稳定的频率。虽然自激电路的优点众多，但其设计也面临挑战。主要的关注点之一是确保反馈环路的稳定性。如果反馈过强，可能导致振荡幅度过大，从而损坏电路。相反，如果反馈过弱，电路可能无法维持自身运作。因此，工程师必须仔细平衡自激电路中的组件，以实现最佳性能。总之，自激电路是一个杰出的例子，展示了电子系统如何利用反馈机制高效、自动地运行。它在发电机和振荡器中的应用突显了自我调节在现代技术中的重要性。随着我们在电子领域的不断进步，理解自激电路背后的原理将对开发满足我们不断演变的技术需求的创新解决方案至关重要。