钛酸钡基PTCR的电压效应测量方法的研究  

Voltage Effect on the BaTiO_3-based Ceramic PTC Thermistor and its Measurement

作　　者：刘勇 庄志强[2] 

机构地区：[1]广东省顺德市协力电子元件有限公司,广东顺德528308 [2]广州市华南理工大学材料学院,广东广州510640

出　　处：《电子元件与材料》2002年第10期4-6,共3页Electronic Components And Materials

摘　　要：PTC(正温度系数)热敏电阻器存在电压效应,此电压效应对PTC热敏电阻器的工作特性有明显的影响,本文讨论了用“脉冲放电法”测量PTC热敏电阻的电压效应的工作原理。用自行设计的电路测量了PTC热敏电阻器的电压效应。实验证明陶瓷PTCR(正温度系数热敏电阻器)的确存在电阻的电压效应。随着外加电压的升高,PTCR的电阻值明显下降。The voltage effect on ceramic PTC thermistors is obvious. The principle of pulse discharging method for testing the voltage effect on the BaTiO3-base ceramic PTC thermistors is discussed. The voltage effect on ceramic PTC thermistors was measured by a self-developed circuit. The result has confirmed the existence of the voltage effect. The resistance of ceramic PTC thermistors decreases with the increase of the voltage applied.

关 键 词：钛酸钡基 PTCR 电压效应 脉冲放电法 冲击电压发生器 正温度系数 热敏电阻 

分 类 号：TN373[电子电信—物理电子学]