压敏电阻静电放电防护性能测试与研究

The performance testing and research of varistor electrostatic discharge protective

设计基于PLC的静电放电自动测试系统,研究静电放电保护器件压敏电阻的防护性能。对压敏电阻180KD20的静电放电电流、响应电压、箝位电压与放电残余电压4个参数进行了测试,分析了其规律及特点以及与压敏电阻静电放电防护能力的关系。本研究为设计电路的静电防护器件选择压敏电阻提供了理论参考,对研究压敏电阻静电放电防护性能有一定的应用价值。

This paper design the automatic test system of electrostatic discharge based on PLC and research the protective performance of varistor which is the electrostatic discharge protective device.Four parameters of electrostatic discharge current,response voltage,clamping voltage and residual voltage of varistor 180KD20 were tested,and the rules and characteristics were analyzed,the relationships between parameters and varistor electrostatic protective capability were analyzed.This research provide a theoretical reference for the selection of varistor in the design of circuit protective devices,the study of varistor electrostatic protection performance has certain application value.