emitter junction

简明释义

发射结发射极结

英英释义

例句

1.In a bipolar junction transistor, the emitter junction is crucial for current amplification.

在双极结晶体管中，发射结对电流放大至关重要。

2.The performance of the transistor largely depends on the properties of the emitter junction.

晶体管的性能在很大程度上取决于发射结的特性。

3.When designing circuits, engineers must consider the thermal effects at the emitter junction.

在设计电路时，工程师必须考虑发射结的热效应。

4.The breakdown voltage of the emitter junction can affect the overall reliability of the device.

发射结的击穿电压会影响设备的整体可靠性。

5.Proper biasing of the emitter junction is essential for optimal transistor operation.

对发射结进行适当的偏置对于优化晶体管的操作至关重要。

作文

In the realm of semiconductor physics, understanding the various components and their functions is crucial for anyone interested in electronics. One important concept is the emitter junction, which plays a significant role in the operation of transistors. The emitter junction refers to the interface between the emitter region and the base region of a bipolar junction transistor (BJT). This junction is essential because it determines how effectively the transistor can amplify current. To delve deeper into the function of the emitter junction, we must first understand the structure of a BJT. A BJT consists of three layers: the emitter, base, and collector. The emitter is heavily doped with impurities to ensure that it can inject a large number of charge carriers into the base. The base, on the other hand, is lightly doped and thin, allowing for efficient control of the charge carriers. The collector is designed to collect the charge carriers that have traversed the base. The emitter junction, being the boundary between the emitter and the base, is critical for the transistor's operation. When a small input current is applied to the base, it allows a larger current to flow from the emitter to the collector. This phenomenon is known as current amplification, which is one of the key features of BJTs. The efficiency of this process largely depends on the characteristics of the emitter junction. One of the primary functions of the emitter junction is to facilitate the injection of charge carriers into the base. When the emitter junction is forward-biased, electrons from the n-type emitter are pushed into the p-type base. Since the base is very thin and lightly doped, most of these electrons will not recombine with holes in the base but will instead travel toward the collector. This movement of electrons is what enables the transistor to amplify the input signal. Moreover, the emitter junction also influences the switching characteristics of the transistor. In digital circuits, transistors act as switches that can turn on or off based on the input signal. The speed at which the emitter junction can respond to changes in voltage dictates how quickly the transistor can switch states. Therefore, understanding the properties of the emitter junction is vital for designing efficient electronic circuits. In summary, the emitter junction is a fundamental aspect of bipolar junction transistors, playing a crucial role in current amplification and switching operations. By facilitating the injection of charge carriers and influencing the transistor's response time, the emitter junction significantly impacts the performance of electronic devices. As technology continues to advance, a deeper understanding of such components will be essential for innovation in the field of electronics.

在半导体物理领域，理解各种组件及其功能对于任何对电子学感兴趣的人来说都是至关重要的。一个重要的概念是发射极结，它在晶体管的运作中扮演着重要角色。发射极结指的是双极结晶体管（BJT）中发射极区域与基极区域之间的界面。这个结是必不可少的，因为它决定了晶体管放大电流的有效性。要深入了解发射极结的功能，我们首先必须理解BJT的结构。BJT由三层组成：发射极、基极和集电极。发射极被重掺杂以确保它能够向基极注入大量的载流子。另一方面，基极轻掺杂且很薄，这使得能够有效地控制载流子。集电极则设计用于收集穿过基极的载流子。作为发射极和基极之间的边界，发射极结对晶体管的运作至关重要。当施加小的输入电流到基极时，它允许更大的电流从发射极流向集电极。这种现象被称为电流放大，这是BJT的一个关键特性。这个过程的效率在很大程度上取决于发射极结的特性。发射极结的主要功能之一是促进载流子向基极的注入。当发射极结正向偏置时，来自n型发射极的电子被推入p型基极。由于基极非常薄且轻掺杂，这些电子大多数不会与基极中的孔复合，而是会朝向集电极移动。这些电子的运动使得晶体管能够放大输入信号。此外，发射极结还影响晶体管的开关特性。在数字电路中，晶体管充当开关，可以根据输入信号打开或关闭。发射极结对电压变化的响应速度决定了晶体管可以多快地切换状态。因此，理解发射极结的特性对设计高效的电子电路至关重要。总之，发射极结是双极结晶体管的基本方面，在电流放大和开关操作中发挥着至关重要的作用。通过促进载流子的注入并影响晶体管的响应时间，发射极结显著影响电子设备的性能。随着技术的不断进步，更深入地理解这些组件将对电子领域的创新至关重要。