直流微电机用环形低压压敏电阻器的性能比较  

Properties of two kinds of ring varistors used in direct current micromotors.

作　　者：傅刚[1] 陈环[1] 陈志雄[1] 张进修[2] 

机构地区：[1]广州师范学院物理系,广东广州510405 [2]中山大学物理系,广东广州510275

出　　处：《电子元件与材料》2001年第1期14-15,19,共3页Electronic Components And Materials

摘　　要：测量了目前直流微电机消噪用 Zn O和 Sr Ti O3两类环形压敏电阻器的特性参数 ,分析了它们的介电 -频率和介电 -温度特性 ,并与所研制的用籽晶法制备的 Zn O压敏电阻的性能相比较。比较测量结果说明 ,采用籽晶法制备的 Zn O压敏电阻器 ,具有易于低压化且压敏特性良好的优点。尽管 Zn O的电容量不及 Sr Ti O3,但由于Zn O压敏电阻的制备属常规工艺且成本低廉 ,在要求价格低的直流微电机应用领域 ,只要提高 Zn O环形压敏电阻器的压敏特性 。The properties of the varistors used in direct current micromotors are investigated. The dielectric frequency characteristics and dielectric temperature characteristics are analyzed. As compared with low voltage ZnO varistors made by seed crystal process, the results indicate that low voltage ZnO varistors made by seed crystal process,the results indicate that low voltage ZnO varistors made by seed crystal process possess better properties. Owing to the easier technology and lower cost compared with those of SrTio 3 varistors, ZnO ring varistors of high properties still have its place in the field of direct current micromotors although its capacitance is lower than that of SrTiO 3.(4 refs.)

关 键 词：直流微电机 环形压敏电阻器 氧化锌 钛酸锶 介电特性 

分 类 号：TM54[电气工程—电器]