back voltage

简明释义

1. 逆电压; 2. 反电压;

英英释义

例句

1.Engineers need to consider back voltage 反向电压 when designing power circuits.

工程师在设计电源电路时需要考虑反向电压。

2.When the relay is turned off, it generates a back voltage 反向电压 that can cause interference.

当继电器关闭时，会产生一个可能导致干扰的反向电压。

3.The motor stopped working because of the high back voltage 反向电压 generated during operation.

由于运转过程中产生的高反向电压，电机停止工作。

4.To prevent damage, the circuit has a mechanism to handle back voltage 反向电压 spikes.

为了防止损坏，电路有机制来处理反向电压尖峰。

5.The back voltage 反向电压 can affect the efficiency of the transformer.

电力变压器的效率可能会受到反向电压的影响。

作文

Understanding the concept of back voltage is essential for anyone involved in electrical engineering or electronics. Back voltage refers to the voltage that opposes the applied voltage in a circuit. This phenomenon often occurs in inductive components, such as coils and transformers, where a change in current can induce a voltage in the opposite direction. The implications of back voltage are significant in various applications, from simple circuits to complex machinery.When we analyze a basic circuit containing an inductor, we notice that when the current flowing through the inductor changes, it generates a back voltage. This generated voltage is due to Lenz's Law, which states that the direction of induced electromotive force (EMF) will always oppose the change in current that created it. For instance, if the current is increasing, the back voltage will act to decrease the current, while if the current is decreasing, it will act to increase it. This self-regulating behavior is crucial for maintaining stability in electrical systems.In practical applications, back voltage plays a critical role in protecting circuits from damage. For example, in relay systems, when the coil is de-energized, the sudden stop in current flow can generate a high back voltage, potentially damaging sensitive components. To mitigate this risk, engineers often incorporate flyback diodes, which provide a path for the current generated by the back voltage to safely dissipate, thus protecting the rest of the circuit.Moreover, understanding back voltage is vital in the design of power supplies and converters. In switching power supplies, for instance, the back voltage can affect the efficiency and performance of the system. Designers must account for these voltages to ensure that the components operate within their safe limits and to optimize the energy conversion process.Furthermore, in the realm of renewable energy, back voltage considerations become even more critical. In systems like solar inverters, the interaction between the solar panels and the grid can create scenarios where back voltage may influence the overall system performance. Engineers must carefully manage these voltages to maximize efficiency and reliability.In conclusion, the concept of back voltage is not just an abstract idea; it has real-world implications in the design and operation of electronic devices and systems. Whether it’s preventing damage in relay circuits, optimizing power supply designs, or enhancing the performance of renewable energy systems, a solid understanding of back voltage is indispensable. As technology continues to evolve, the importance of mastering such concepts will only grow, making it a fundamental aspect of electrical engineering education and practice.

理解反向电压的概念对任何从事电气工程或电子学的人来说都是至关重要的。反向电压指的是在电路中与施加电压相反的电压。这种现象通常发生在感性元件中，例如线圈和变压器，当电流发生变化时，会在相反的方向上感应出电压。反向电压的影响在各种应用中都具有重要意义，从简单电路到复杂机械设备。当我们分析一个包含电感器的基本电路时，我们会注意到，当流经电感器的电流发生变化时，会产生反向电压。这种产生的电压是由于楞次定律，它指出感应电动势（EMF）的方向总是会抵消造成它的电流变化。例如，如果电流在增加，反向电压将起到减少电流的作用，而如果电流在减少，它将起到增加电流的作用。这种自我调节行为对于维持电气系统的稳定性至关重要。在实际应用中，反向电压在保护电路免受损坏方面发挥着关键作用。例如，在继电器系统中，当线圈失去电能时，电流流动的突然停止可能会产生高反向电压，可能会损坏敏感组件。为了降低这种风险，工程师们通常会加入飞行回路二极管，为由反向电压产生的电流提供一个安全的释放路径，从而保护电路的其余部分。此外，理解反向电压在电源和变换器的设计中至关重要。例如，在开关电源中，反向电压可能会影响系统的效率和性能。设计师必须考虑这些电压，以确保组件在安全范围内运行，并优化能量转换过程。此外，在可再生能源领域，反向电压的考虑变得更加关键。在太阳能逆变器等系统中，太阳能电池板与电网之间的相互作用可能会产生反向电压，影响整体系统性能。工程师必须仔细管理这些电压，以最大化效率和可靠性。总之，反向电压的概念不仅仅是一个抽象的想法；它在电子设备和系统的设计和操作中具有现实世界的影响。无论是在继电器电路中防止损坏、优化电源设计还是提升可再生能源系统的性能，扎实理解反向电压都是不可或缺的。随着技术的不断发展，掌握这些概念的重要性只会增加，使其成为电气工程教育和实践的基本方面。