avalanche breakdown

简明释义

雪崩式击穿

英英释义

例句

1.In high-voltage applications, understanding avalanche breakdown 雪崩击穿 helps in designing safer circuits.

在高电压应用中，理解avalanche breakdown 雪崩击穿有助于设计更安全的电路。

2.The team used simulations to predict when avalanche breakdown 雪崩击穿 would occur in their semiconductor devices.

团队使用模拟来预测他们的半导体设备中何时会发生avalanche breakdown 雪崩击穿。

3.The physicist noted that avalanche breakdown 雪崩击穿 is critical for the operation of certain types of photodetectors.

物理学家指出，avalanche breakdown 雪崩击穿对某些类型的光电探测器的工作至关重要。

4.During the experiment, we observed an avalanche breakdown 雪崩击穿 in the diode at high voltage.

在实验中，我们观察到二极管在高电压下发生了avalanche breakdown 雪崩击穿。

5.The electrical engineer explained that an avalanche breakdown 雪崩击穿 occurs when a large number of charge carriers are generated in a semiconductor.

电气工程师解释说，avalanche breakdown 雪崩击穿发生在半导体中产生大量载流子时。

作文

In the realm of physics and engineering, the term avalanche breakdown refers to a phenomenon that occurs in semiconductor devices, particularly in diodes and transistors. This process is crucial for understanding how certain electronic components function under high voltage conditions. When a reverse bias is applied to a p-n junction, a small amount of current flows due to minority charge carriers. However, if the reverse voltage exceeds a specific threshold known as the breakdown voltage, the current can increase dramatically. This sudden surge in current is what we refer to as avalanche breakdown. It happens because the electric field in the depletion region becomes strong enough to accelerate free electrons, which then collide with other atoms, creating more free electrons in a chain reaction. This cascading effect leads to an exponential increase in current, which can potentially damage the device if not controlled properly.Understanding avalanche breakdown is essential for engineers designing circuits that operate at high voltages. For instance, in applications involving power electronics, the ability to manage this breakdown can enhance the performance and reliability of devices such as voltage regulators and surge protectors. Moreover, the concept is also pivotal in the development of avalanche photodiodes, which are designed to exploit this breakdown mechanism for the purpose of detecting light. These devices are highly sensitive and can amplify weak optical signals, making them invaluable in telecommunications and medical imaging.However, while avalanche breakdown can be harnessed for beneficial uses, it also poses risks. In many scenarios, if the breakdown is not intentional or controlled, it can lead to catastrophic failure of electronic components. For example, in integrated circuits, unintentional avalanche breakdown can result from transient voltage spikes, leading to permanent damage. Therefore, engineers must incorporate protective measures such as clamping diodes and proper circuit design to mitigate these risks.In conclusion, avalanche breakdown is a critical concept in the field of electronics that illustrates both the potential and the pitfalls of operating under high voltage conditions. By comprehensively understanding this phenomenon, engineers can better design reliable systems that utilize its advantages while minimizing the associated risks. As technology continues to advance, the implications of avalanche breakdown will remain significant in shaping the future of electronic devices and systems, making it an indispensable topic of study in electrical engineering.

在物理和工程领域，术语雪崩击穿指的是发生在半导体器件中的一种现象，特别是在二极管和晶体管中。这个过程对于理解某些电子元件在高电压条件下的工作原理至关重要。当对p-n结施加反向偏置时，由于少数载流子，少量电流会流动。然而，如果反向电压超过一个特定的阈值，即击穿电压，电流可能会急剧增加。我们所称之为雪崩击穿的正是这种突发的电流激增。这是因为耗尽区中的电场变得足够强大，以加速自由电子，这些电子随后与其他原子碰撞，产生更多的自由电子，形成链式反应。这种级联效应导致电流呈指数级增加，如果不加以控制，可能会损坏设备。理解雪崩击穿对于设计高电压电路的工程师至关重要。例如，在涉及功率电子学的应用中，管理这种击穿的能力可以提高电压调节器和浪涌保护器等设备的性能和可靠性。此外，这一概念在开发雪崩光电二极管时也至关重要，这些二极管旨在利用这一击穿机制来检测光。这些设备非常敏感，可以放大微弱的光信号，使其在电信和医学成像中变得不可或缺。然而，虽然雪崩击穿可以被利用于有益的用途，但它也带来了风险。在许多情况下，如果击穿不是故意或可控的，可能会导致电子元件的灾难性故障。例如，在集成电路中，无意的雪崩击穿可能是由瞬态电压尖峰引起的，导致永久性损坏。因此，工程师必须采取保护措施，例如钳位二极管和适当的电路设计，以减轻这些风险。总之，雪崩击穿是电子学领域中的一个关键概念，它展示了在高电压条件下工作潜力与陷阱的双重性。通过全面理解这一现象，工程师能够更好地设计出利用其优势的可靠系统，同时将相关风险降到最低。随着技术的不断进步，雪崩击穿的影响在塑造未来电子设备和系统方面将继续显著，使其成为电气工程研究中不可或缺的主题。