摘要
采用居里点３５３～３８３Ｋ，温度系数＋１６％以上，电阻率３０Ω·ｃｍ的ＰＴＣ半导体陶瓷材料制成的电流敏感器件———程控电话交换机用ＰＴＣ过流保护器，已研制成功并投入使用。现从材料制造角度出发，阐述该器件的设计原理、测试方法，对器件的耐流特性进行较深入的研究。
An overcurrent protector current sensitive device, used for a program controlled switchboard is successfully developed and put to use, which is made of PTC semiconductive ceramics with its curie point 353 K to 383 K, temperature coefficient over +16% and resistivity 30 Ω·cm. This paper deals mainly with its design theory and experimental measument, especially with its anti overcurrent property.
出处
《华南理工大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
1997年第5期61-65,共5页
Journal of South China University of Technology(Natural Science Edition)
基金
广东省科委1993年度重点攻关科研项目
关键词
程控电话交换机
电流敏感器件
过流保护器
耐流特性
半导体陶瓷
居里点
program controlled switchboard
current sensitive device
overcurrent protector
anti overcurrent property
semiconductive ceramics
Curie point
