voltage dependent resistor

简明释义

电压函数电阻

英英释义

例句

1.In electronic circuits, a voltage dependent resistor 电压依赖电阻 can help regulate current flow.

在电子电路中，电压依赖电阻 voltage dependent resistor 可以帮助调节电流流动。

2.A voltage dependent resistor 电压依赖电阻 can change its resistance based on the applied voltage, making it useful in various applications.

一个电压依赖电阻 voltage dependent resistor 可以根据施加的电压改变其电阻，这使得它在各种应用中非常有用。

3.When designing a surge protector, engineers often use a voltage dependent resistor 电压依赖电阻 to absorb excess voltage.

在设计浪涌保护器时，工程师通常使用一个电压依赖电阻 voltage dependent resistor 来吸收过剩电压。

4.In power supply circuits, a voltage dependent resistor 电压依赖电阻 helps protect sensitive components from voltage spikes.

在电源电路中，电压依赖电阻 voltage dependent resistor 帮助保护敏感元件免受电压尖峰的影响。

5.Many modern appliances utilize a voltage dependent resistor 电压依赖电阻 to enhance energy efficiency.

许多现代电器利用电压依赖电阻 voltage dependent resistor 来提高能效。

作文

In the realm of electronics and electrical engineering, components play a crucial role in the functioning of circuits. One such component that has gained significant attention is the voltage dependent resistor. A voltage dependent resistor (VDR), also known as a varistor, is a type of resistor whose resistance varies with the applied voltage. This unique property makes it particularly useful in protecting circuits from voltage spikes and surges. When a voltage exceeding a certain threshold is applied, the resistance of the VDR decreases, allowing more current to flow through, thereby diverting excess voltage away from sensitive components.The primary application of voltage dependent resistors is in surge protection devices. For instance, in power strips and surge protectors, VDRs are used to safeguard electronic devices from transient voltages caused by lightning strikes or power surges. When a high voltage occurs, the VDR quickly responds by changing its resistance, thus shunting the excess voltage to the ground and preventing damage to connected devices.Additionally, voltage dependent resistors are utilized in various consumer electronics. They can be found in television sets, computers, and other appliances where voltage fluctuations are common. By incorporating VDRs into these devices, manufacturers can enhance their durability and reliability, ensuring that they function properly even in unstable electrical environments.It is important to note that while voltage dependent resistors provide excellent protection against overvoltage conditions, they do have limitations. For example, they may not respond quickly enough to very fast transients, and their effectiveness can diminish over time due to repeated exposure to high voltages. Therefore, it is essential for engineers to consider these factors when designing circuits that incorporate VDRs.In summary, the voltage dependent resistor is an invaluable component in modern electronics, offering a reliable means of protecting circuits from voltage spikes. Its ability to change resistance based on the applied voltage allows it to effectively manage excess current, making it a critical element in safeguarding sensitive electronic equipment. Understanding how VDRs work and their applications can greatly enhance one’s knowledge of circuit design and protection strategies. As technology continues to evolve, the role of voltage dependent resistors will undoubtedly remain significant, contributing to the safety and longevity of electrical devices worldwide.

在电子和电气工程领域，组件在电路的功能中起着至关重要的作用。其中一个备受关注的组件是电压依赖电阻器。电压依赖电阻器（VDR），也称为变阻器，是一种电阻，其电阻值随施加的电压而变化。这一独特的特性使其在保护电路免受电压尖峰和浪涌方面特别有用。当施加超过某个阈值的电压时，VDR的电阻会降低，从而允许更多电流通过，从而将多余的电压转移到敏感组件之外。电压依赖电阻器的主要应用是在浪涌保护设备中。例如，在插线板和浪涌保护器中，VDR用于保护电子设备免受由雷击或电源浪涌引起的瞬态电压。当发生高电压时，VDR迅速响应，通过改变其电阻，将多余的电压引导到接地，从而防止连接设备的损坏。此外，电压依赖电阻器还用于各种消费电子产品中。它们可以在电视机、计算机和其他电器中找到，这些设备的电压波动很常见。通过将VDR纳入这些设备中，制造商可以增强其耐用性和可靠性，确保即使在不稳定的电气环境中也能正常工作。需要注意的是，虽然电压依赖电阻器在过电压条件下提供了出色的保护，但它们也有局限性。例如，它们可能无法对非常快速的瞬态作出足够快的反应，并且由于反复暴露于高电压，其有效性可能随着时间的推移而减弱。因此，工程师在设计包含VDR的电路时，必须考虑这些因素。总之，电压依赖电阻器是现代电子产品中不可或缺的组件，提供了一种可靠的方式来保护电路免受电压尖峰的影响。它根据施加的电压变化电阻的能力使其能够有效管理多余电流，使其成为保护敏感电子设备的重要元素。了解VDR的工作原理及其应用可以极大地增强人们对电路设计和保护策略的知识。随着技术的不断发展，电压依赖电阻器的作用无疑将继续保持重要性，为全球电气设备的安全性和耐用性做出贡献。