positive voltage

简明释义

正电压

英英释义

例句

1.The LED lights up when a positive voltage 正电压 is applied to it.

当施加正电压 正电压时，LED会亮起。

2.The circuit requires a constant positive voltage 正电压 to function properly.

该电路需要一个恒定的正电压 正电压才能正常工作。

3.In this experiment, we will apply a positive voltage 正电压 across the resistor.

在这个实验中，我们将在电阻器上施加正电压 正电压。

4.When measuring the battery, ensure that you connect the multimeter's red lead to the positive voltage 正电压 terminal.

测量电池时，确保将万用表的红色探头连接到正电压 正电压端子。

5.A positive voltage 正电压 indicates that the potential is higher than the reference point.

正电压 正电压表示电位高于参考点。

作文

In the field of electronics, the concept of positive voltage is fundamental to understanding how circuits operate. Voltage, in general, refers to the electric potential difference between two points in a circuit. When we talk about positive voltage, we are specifically referring to a situation where one point has a higher electric potential compared to another point, usually considered as the ground or zero voltage reference. This difference in potential is what drives electric current through a circuit, allowing devices to function as intended.To illustrate the importance of positive voltage, consider a simple battery-powered flashlight. The battery generates a positive voltage at its positive terminal relative to its negative terminal. When the switch on the flashlight is turned on, the circuit is completed, and current flows from the positive terminal through the bulb and back to the negative terminal. In this case, the positive voltage from the battery is essential for the light bulb to emit light. Without it, the circuit remains open, and no current flows.Moreover, positive voltage is crucial in various electronic components such as transistors, diodes, and integrated circuits. For instance, in a transistor, applying a positive voltage to the base terminal allows it to control a larger current flowing from the collector to the emitter. This ability to amplify signals makes transistors vital in modern electronics, including computers and smartphones.Understanding positive voltage also involves recognizing its role in power supply systems. Power supplies convert alternating current (AC) from the wall outlet into direct current (DC), which is often required by electronic devices. During this conversion process, the power supply provides a stable positive voltage output that powers the device. Engineers must carefully design these power supplies to ensure that the positive voltage remains within specified limits to prevent damage to sensitive components.Additionally, safety is a significant concern when dealing with positive voltage. High positive voltage levels can pose shock hazards, so understanding the voltage levels in a circuit is essential for anyone working with electronics. Proper insulation, grounding, and protective equipment are necessary to mitigate risks associated with high voltage.In conclusion, the term positive voltage is not just a technical jargon; it is a critical concept that underpins the functionality of countless electronic devices. From enabling the operation of simple gadgets like flashlights to powering complex systems in computers, the role of positive voltage cannot be overstated. As technology continues to advance, a solid understanding of electrical principles, including positive voltage, will remain essential for engineers, technicians, and hobbyists alike. By grasping this concept, we can better appreciate the intricate workings of the electronic world around us.

在电子学领域，正电压的概念对于理解电路的运作至关重要。电压一般是指电路中两点之间的电位差。当我们谈论正电压时，我们特别指的是一种情况，其中一个点的电位高于另一个点，通常被视为地面或零电压参考。这种电位差驱动电流通过电路，使设备按预期功能运行。为了说明正电压的重要性，考虑一个简单的电池供电手电筒。电池在其正极相对于负极产生正电压。当手电筒上的开关打开时，电路闭合，电流从正极流向灯泡，然后返回负极。在这种情况下，电池的正电压对灯泡发光至关重要。如果没有它，电路保持开放，电流就不会流动。此外，正电压在各种电子元件中也至关重要，例如晶体管、二极管和集成电路。例如，在晶体管中，施加正电压到基极可以控制从集电极流向发射极的更大电流。这种放大信号的能力使晶体管在现代电子产品中至关重要，包括计算机和智能手机。理解正电压还涉及认识其在电源系统中的作用。电源将来自墙壁插座的交流电（AC）转换为直流电（DC），而后者通常是电子设备所需的。在这个转换过程中，电源提供稳定的正电压输出，以为设备供电。工程师必须仔细设计这些电源，以确保正电压保持在规定的范围内，以防止对敏感元件造成损害。此外，处理正电压时安全性是一个重要问题。高正电压水平可能会带来触电危险，因此了解电路中的电压水平对任何与电子设备打交道的人来说都至关重要。适当的绝缘、接地和防护设备是减轻高电压相关风险的必要措施。总之，术语正电压不仅仅是技术术语；它是支撑无数电子设备功能的关键概念。从使简单小工具如手电筒运行到为计算机中的复杂系统供电，正电压的角色不可低估。随着技术的不断进步，对电气原理的扎实理解，包括正电压，将继续对工程师、技术人员和爱好者至关重要。通过掌握这一概念，我们可以更好地欣赏周围电子世界的复杂运作。