varistors

简明释义

英[vəˈrɪstər]美[vəˈrɪstər]

n. [电子]压敏电阻；变阻器（varistor 复数）；突波吸收器

英英释义

单词用法

同义词

反义词

例句

1.The slurry suitable for screen printing head 200-325 can PTC, glass, ceramics and varistors and other substrates used, mainly used in low temperature sintering of the conductor.

该浆料适用于200—325目丝网印刷，可在PTC、玻璃、陶瓷及压敏电阻器等基片上使用，主要用在较低温度下烧成的导体。

2.After being sintered and the heat treatment and electricity treatment, the performance of these varistors was superior to that of the varistors fabricated by the solid phase method.

元件在烧结后，经过热处理和电老练，其性能较传统的固相球磨制备元件提高很多。

3.The power electronic model of thyristor controlled series compensation (TCSC) consisting of capacitors, inductors, thyristors, metal oxide varistors (MOV) is led into digital simulation.

在可控串联电容补偿装置（TCSC）的研究中，用电容、电感、晶闸管、MOV等元件构造TCSC器件模型。

4.Zinc Oxide (ZnO) is a multi-functional material, which has been widely applied in gas sensors, varistors, catalysts and anti-bacterial materials.

氧化锌是一种用途十分广泛的功能材料，已被用于气敏、压敏、催化、抗菌等重要领域。

5.Varistors with good properties are prepared with adjusting gas fluxes and sputtering times.

通过调节真空室的气体流量和溅射时间，制备了性能优越的变阻器。

6.ZnO has a wide range of applications in the functional devices, catalysts, pigments, optical materials, cosmetics, nanostructure varistors, UV absorbers, gas sensors and industrial additives.

氧化锌在催化剂，色素，光学材料，美容制品，纳米压敏电阻，紫外吸收器，气体传感器，工业添加剂等功能设施上都有广泛的应用。

7.Moreover, we have tried to control the microstructure by designing CCTO-based composite to facilitate its practical application in capacitors and varistors.

并通过配方设计，实现结构控制，推进CCTO在电容器材料以及压敏电阻材料方面的实际应用。

8.Studies on ZnO varistors in recent years, for improving the energy discharge capability, are reviewed.

综述了近年来国内外在提高氧化锌电阻片通流能力方面的研究进展。

9.The varistors in this device help prevent damage from lightning strikes.

该设备中的压敏电阻有助于防止雷击造成的损坏。

10.In electronic circuits, varistors are used to protect against voltage spikes.

在电子电路中，压敏电阻用于防止电压尖峰。

11.Engineers often use varistors to ensure the longevity of electronic devices.

工程师们常常使用压敏电阻来确保电子设备的耐用性。

12.When selecting components for a surge protector, make sure to include high-quality varistors.

在选择浪涌保护器的组件时，确保包括高质量的压敏电阻。

13.A faulty varistor can lead to equipment failure during a power surge.

故障的压敏电阻可能会导致设备在电力浪涌期间失效。

作文

In the world of electronics, various components play crucial roles in ensuring the smooth operation of devices. One such component that is often overlooked is the varistor. A varistor is a voltage-dependent resistor, which means its resistance changes with the voltage applied across it. This unique property makes varistors essential for protecting electronic circuits from voltage spikes and surges. In this essay, I will explore the significance of varistors, their applications, and how they contribute to the reliability of electronic systems.Firstly, understanding the function of a varistor is vital. When the voltage exceeds a certain threshold, the resistance of the varistor decreases significantly, allowing it to conduct current and divert excess energy away from sensitive components. This behavior is particularly important in scenarios where voltage spikes can occur, such as during lightning storms or power surges. By clamping the voltage to a safer level, varistors protect devices like computers, televisions, and other household appliances from damage.Moreover, varistors are commonly used in surge protection devices (SPDs). These devices are designed to safeguard electrical equipment by absorbing and dissipating the energy from transient voltage spikes. For instance, when a sudden increase in voltage occurs, the varistor in the SPD quickly reacts, preventing the excess voltage from reaching the connected equipment. This application is crucial for industries that rely heavily on sensitive electronic equipment, as it helps prevent costly downtime and repairs.Another significant aspect of varistors is their versatility. They come in various forms, including metal oxide varistors (MOVs) and silicon carbide varistors. MOVs are the most widely used type due to their excellent clamping capabilities and fast response times. They can handle high-energy transients, making them suitable for a wide range of applications, from consumer electronics to industrial machinery. On the other hand, silicon carbide varistors are known for their high-temperature stability and are often used in high-voltage applications.In addition to their protective functions, varistors also play a role in signal conditioning. In certain applications, they can help stabilize voltage levels, ensuring that electronic circuits operate within their specified ranges. This stability is crucial for maintaining the performance of sensitive devices, such as medical equipment and communication systems, where fluctuations in voltage can lead to malfunctions or inaccuracies.Despite their benefits, it is essential to note that varistors have limitations. For instance, they can degrade over time, especially after repeated exposure to high voltage spikes. Therefore, regular maintenance and testing are necessary to ensure their continued effectiveness. Additionally, while varistors are excellent at clamping voltage spikes, they do not provide complete protection against all types of electrical disturbances. Combining them with other protective devices, such as fuses and circuit breakers, can enhance overall system reliability.In conclusion, varistors are indispensable components in modern electronics, providing vital protection against voltage spikes and ensuring the longevity of devices. Their ability to adapt to changing voltage levels makes them crucial in various applications, from consumer electronics to industrial systems. As technology continues to evolve, the role of varistors will remain significant in safeguarding our electronic infrastructure. Understanding their function and importance can help us appreciate the intricate workings of the devices we rely on daily.

在电子世界中，各种组件在确保设备平稳运行方面发挥着至关重要的作用。其中一个常被忽视的组件是压敏电阻。压敏电阻是一种电压依赖电阻，这意味着它的电阻会随着施加在其两端的电压而变化。这一独特的特性使得压敏电阻在保护电子电路免受电压尖峰和浪涌方面至关重要。在这篇文章中，我将探讨压敏电阻的重要性、应用以及它们如何为电子系统的可靠性做出贡献。首先，理解压敏电阻的功能至关重要。当电压超过某个阈值时，压敏电阻的电阻显著降低，允许其导电并将多余的能量引导离敏感组件。这种行为在电压尖峰可能发生的情况下尤为重要，例如在雷暴或电力浪涌期间。通过将电压钳制到更安全的水平，压敏电阻保护计算机、电视和其他家用电器免受损坏。此外，压敏电阻通常用于浪涌保护设备（SPD）。这些设备旨在通过吸收和消散瞬态电压尖峰的能量来保护电气设备。例如，当电压突然增加时，SPD中的压敏电阻会迅速反应，防止多余的电压到达连接的设备。这一应用对于依赖敏感电子设备的行业至关重要，因为它有助于防止昂贵的停机和维修。压敏电阻的另一个重要方面是其多功能性。它们有多种形式，包括金属氧化物压敏电阻（MOV）和碳化硅压敏电阻。MOV是使用最广泛的类型，因为它们具有优异的钳制能力和快速的响应时间。它们能够处理高能瞬态，使其适用于从消费电子到工业机械的广泛应用。另一方面，碳化硅压敏电阻以其高温稳定性而闻名，通常用于高电压应用。除了保护功能外，压敏电阻在信号调节中也发挥作用。在某些应用中，它们可以帮助稳定电压水平，确保电子电路在其规定范围内运行。这种稳定性对于维护敏感设备的性能至关重要，例如医疗设备和通信系统，在这些系统中，电压波动可能导致故障或不准确。尽管有其优势，但需要注意的是，压敏电阻也有局限性。例如，尤其是在多次暴露于高电压尖峰后，它们可能会随时间退化。因此，定期的维护和测试是确保其持续有效性的必要条件。此外，虽然压敏电阻在钳制电压尖峰方面表现出色，但它们并不能提供对所有类型电气干扰的完全保护。将它们与其他保护设备（如保险丝和断路器）结合使用，可以增强整体系统的可靠性。总之，压敏电阻是现代电子产品中不可或缺的组件，提供对电压尖峰的重要保护，确保设备的长期使用。它们适应变化电压水平的能力使其在从消费电子到工业系统的各种应用中至关重要。随着技术的不断发展，压敏电阻在保护我们的电子基础设施方面的作用仍将继续显著。理解它们的功能和重要性可以帮助我们欣赏我们日常依赖的设备的复杂工作原理。