capacitor

简明释义

英[kəˈpæsɪtə(r)]美[kəˈpæsɪtər]

n. [电] 电容器

复 数 c a p a c i t o r s

英英释义

单词用法

同义词

反义词

例句

1.And he found something missing: a fourth basic circuit element besides the standard trio of resistor, capacitor and inductor.

然后他却发现了某些东西：一个除了由电阻，电容和电感组成的标准三重奏之外的第四个基本电路元件。

2.A transistor, a capacitor, and a variable resistor were the three basic components of Kearns' circuit.

在卡恩斯电路中，晶体管、电容器和可变电阻器是三个基本元件。

3.“And I saw capacitor, resistor, transistor—it was all there, ” he recalls. “Even the great Mercedes had infringed my patents.”

“我看到了电容器、电阻器和晶体管——它们都在”，他回忆说，“即使是强大的梅赛德斯也侵犯了我的专利权。”

4.The capacitor integrates the current.

电容器汇合了电流。

5.A sheet containing two layers of nanotubes is a capacitor (each layer ACTS as a plate).

由两层纳米管道的组成的平板就成为了一个电容器(每一层就如同一个极板)。

6.A capacitor is different.

电容器是不同的。

7.The capacitor in your phone helps to stabilize the power supply.

你手机中的电容器有助于稳定电源。

8.When charging, a capacitor takes time to reach its maximum voltage.

在充电时，电容器需要时间才能达到其最大电压。

9.A capacitor can store electrical energy for later use.

电容器可以存储电能以备后用。

10.The engineer replaced the faulty capacitor in the circuit board.

工程师更换了电路板中故障的电容器。

11.In this power supply, the capacitor smooths out voltage fluctuations.

在这个电源中，电容器平滑了电压波动。

作文

A capacitor is a fundamental component in electronic circuits, playing a vital role in various applications. Understanding the function and significance of a capacitor can enhance our knowledge of electronics and how devices operate. Essentially, a capacitor is a passive electronic component that stores energy in an electric field. It consists of two conductive plates separated by an insulating material known as a dielectric. When voltage is applied across the plates, an electric charge accumulates on them, allowing the capacitor to store electrical energy.The primary function of a capacitor is to store and release energy. This characteristic makes it invaluable in smoothing out fluctuations in power supply, filtering signals, and managing timing circuits. For example, in power supply circuits, a capacitor can help stabilize voltage and provide a steady current, which is critical for the proper functioning of electronic devices. Without capacitors, many devices would experience voltage spikes or drops, leading to potential damage or malfunction.In addition to power supply stabilization, capacitors are widely used in audio equipment. They filter out unwanted frequencies, allowing only the desired sound waves to pass through. In this way, a capacitor enhances audio quality and performance, making it essential for musicians and sound engineers alike. Moreover, in radio frequency applications, capacitors are utilized in tuning circuits to select specific frequencies, demonstrating their versatility and importance in communication technologies.Another crucial application of capacitors is in timing circuits. By controlling the charge and discharge rates of a capacitor, engineers can create precise time delays. This function is particularly important in devices like clocks, timers, and microcontrollers, where accurate timing is essential for synchronization and operation.The value of a capacitor is measured in farads (F), which indicates its capacity to store charge. However, most capacitors used in everyday electronics are in the microfarad (µF) or picofarad (pF) range due to their small size and the amount of energy they typically need to store. Different types of capacitors exist, including ceramic, electrolytic, and tantalum, each with unique properties suited for various applications. For instance, electrolytic capacitors are known for their high capacitance values but must be used with caution due to their polarity sensitivity.In conclusion, the capacitor is an essential component in modern electronics, serving multiple functions that enhance the performance and reliability of devices. From stabilizing power supplies to filtering audio signals and managing timing circuits, the versatility of capacitors cannot be overstated. As technology continues to advance, understanding the role of capacitors will remain crucial for anyone interested in electronics and engineering. By grasping the principles behind capacitors, we can better appreciate the intricate workings of the devices we use daily and the science that drives innovation in the field of electronics.

电容器是电子电路中的基本组件，在各种应用中发挥着至关重要的作用。理解电容器的功能和重要性可以增强我们对电子学及其设备运作方式的知识。本质上，电容器是一种被动电子元件，可以在电场中储存能量。它由两个导电板组成，中间隔着一种称为介质的绝缘材料。当电压施加在板之间时，电荷会在其上积累，从而使电容器能够储存电能。电容器的主要功能是储存和释放能量。这一特性使得它在平滑电源波动、过滤信号和管理定时电路方面不可或缺。例如，在电源电路中，电容器可以帮助稳定电压并提供稳定的电流，这对电子设备的正常运行至关重要。如果没有电容器，许多设备将遭遇电压尖峰或下降，可能导致损坏或故障。除了电源稳定外，电容器还广泛用于音频设备。它们过滤掉不必要的频率，只允许所需的声波通过。通过这种方式，电容器提高了音频质量和性能，使其成为音乐家和音响工程师必不可少的工具。此外，在射频应用中，电容器用于调谐电路以选择特定频率，展示了它们在通信技术中的多功能性和重要性。电容器的另一个关键应用是在定时电路中。通过控制电容器的充放电速率，工程师可以创建精确的时间延迟。这一功能在时钟、计时器和微控制器等设备中尤为重要，准确的时序对于同步和操作至关重要。电容器的容量以法拉（F）为单位来测量，表示其储存电荷的能力。然而，日常电子产品中使用的大多数电容器的容量在微法拉（µF）或皮法拉（pF）范围内，这是由于它们的小尺寸和通常需要储存的能量量。不同类型的电容器存在，包括陶瓷电容器、电解电容器和钽电容器，每种电容器都有独特的属性，适合各种应用。例如，电解电容器以其高电容值而闻名，但由于其极性敏感性，使用时必须小心。总之，电容器是现代电子产品中不可或缺的组件，具有多种功能，增强了设备的性能和可靠性。从稳定电源到过滤音频信号，再到管理定时电路，电容器的多功能性不容小觑。随着技术的不断进步，理解电容器的作用将对任何对电子学和工程感兴趣的人保持重要性。通过掌握电容器背后的原理，我们可以更好地欣赏我们每天使用的设备的复杂运作，以及推动电子领域创新的科学。