forward bias

简明释义

正向偏压

英英释义

例句

1.To achieve forward bias, the circuit must ensure that the voltage exceeds the threshold level of the diode.

为了实现正向偏置，电路必须确保电压超过二极管的阈值电平。

2.In semiconductor physics, a diode is said to be in forward bias when the positive terminal of the voltage source is connected to the anode, allowing current to flow.

在半导体物理中，当电压源的正极连接到阳极时，二极管被称为处于正向偏置状态，从而允许电流流动。

3.When designing circuits, engineers often calculate the forward bias voltage needed for optimal performance.

在设计电路时，工程师通常会计算所需的正向偏置电压以达到最佳性能。

4.Understanding forward bias is crucial for troubleshooting electronic devices that use diodes.

理解正向偏置对于排除使用二极管的电子设备故障至关重要。

5.The transistor operates effectively in the forward bias region, enabling amplification of signals.

晶体管在正向偏置区域有效工作，从而实现信号的放大。

作文

In the realm of electronics, the term forward bias refers to a specific condition in which a semiconductor device, such as a diode, is connected in a manner that allows current to flow easily. This occurs when the positive terminal of a power source is connected to the anode of the diode and the negative terminal is connected to the cathode. When a diode is in forward bias, it conducts electricity, allowing for efficient current flow which is essential in various electronic applications. Understanding forward bias is crucial for anyone interested in electronics or electrical engineering. It plays a significant role in the functionality of circuits. For instance, when designing circuits for power supplies, rectifiers, or amplifiers, engineers must ensure that diodes are appropriately biased to allow for optimal performance. When a diode is in forward bias, the potential barrier at the junction of the p-type and n-type materials decreases. This reduction in the barrier voltage allows charge carriers (holes and electrons) to move across the junction freely, resulting in a significant increase in current flow. In contrast, when a diode is reverse-biased, the potential barrier increases, preventing current from flowing. This property of diodes makes them vital components in converting alternating current (AC) to direct current (DC), as they only allow current to pass in one direction. Furthermore, the concept of forward bias extends beyond just diodes. In bipolar junction transistors (BJTs), for example, the base-emitter junction needs to be in forward bias for the transistor to operate in the active region. This allows the transistor to amplify signals, which is fundamental in audio equipment, radios, and many other electronic devices. The importance of forward bias can also be seen in solar cells. In these devices, when light hits the semiconductor material, it generates electron-hole pairs. By applying a forward bias, these charge carriers can be collected efficiently, resulting in electrical energy production. This application underscores how understanding forward bias can lead to advancements in renewable energy technologies. In conclusion, the concept of forward bias is integral to the functioning of various electronic components. Its ability to allow current to flow through semiconductor devices is fundamental in the design and operation of circuits. Whether it is in diodes, transistors, or solar cells, forward bias plays a pivotal role in modern electronics. Therefore, a clear understanding of this concept is essential for anyone looking to delve deeper into the world of electronics and electrical engineering.

在电子学领域，术语forward bias指的是一种特定的状态，在这种状态下，半导体器件（如二极管）以允许电流轻松流动的方式连接。当电源的正极连接到二极管的阳极，而负极连接到阴极时，就会发生这种情况。当二极管处于forward bias状态时，它会导电，允许电流有效流动，这在各种电子应用中至关重要。理解forward bias对任何对电子或电气工程感兴趣的人来说都是至关重要的。它在电路功能中发挥着重要作用。例如，在设计电源、整流器或放大器的电路时，工程师必须确保二极管适当地偏置，以实现最佳性能。当二极管处于forward bias状态时，p型和n型材料交界处的势垒降低。这种势垒电压的降低使得电荷载流子（孔和电子）能够自由地穿过结，从而导致电流流动显著增加。相反，当二极管处于反向偏置时，势垒增加，阻止电流流动。二极管的这一特性使其成为将交流电（AC）转换为直流电（DC）的关键组件，因为它们只允许电流朝一个方向通过。此外，forward bias的概念不仅限于二极管。例如，在双极结晶体管（BJT）中，基极-发射极结需要处于forward bias状态，以便晶体管在主动区域运行。这使得晶体管能够放大信号，这在音频设备、收音机和许多其他电子设备中是基础。forward bias的重要性在太阳能电池中也可以看到。在这些设备中，当光照射到半导体材料时，会生成电子-空穴对。通过施加forward bias，这些电荷载流子可以高效收集，从而产生电能。这一应用强调了理解forward bias如何推动可再生能源技术的进步。总之，forward bias的概念对各种电子元件的功能至关重要。它允许电流通过半导体器件流动的能力是电路设计和操作的基础。无论是在二极管、晶体管还是太阳能电池中，forward bias在现代电子学中都扮演着关键角色。因此，清楚理解这一概念对于任何希望深入了解电子和电气工程世界的人来说都是必不可少的。