摘要
针对矿用本安型霍尔电流传感器需要正负电源供电的情况,提出了一种采用简单器件构成的低成本截流型本安电源过流保护电路设计方案,并详细分析了该电路的保护原理。此设计具有简单可靠、损耗小、易于电调,利于生产等优点。应用表明,该电路能在故障解除后自动恢复,且恢复时间可调,特别适合本安型霍尔电流传感器的应用场合。
In view of the fact that mine intrinsically safe Hall current sensor needs positive and negative power supply,this paper proposes a low-cost design scheme of over-current protection circuit for cut-off intrinsically safe power supply,and analyzes its protection principle in details.This design has the advantages of being simple and reliable,low loss,easy to adjust and easy to produce.The application shows that the circuit can recover automatically after the fault is removed,and the recovery time is adjustable,which is especially suitable for the application of intrinsically safe Hall current sensor.
作者
贾俊霞
李一文
Jia Junxia;Li Yiwen(Chongqing Creation Vocational College,Chongqing,402160;China Coal Technology and Engineering Group Chongqing Research Institute,Chongqing,400039)
出处
《九江职业技术学院学报》
2020年第4期16-18,共3页
Journal of Jiujiang Vocational and Technical College
基金
中煤科工集团重庆研究院有限公司重点项目(2017ZDXM02)
天地科技创新基金面上项目(2018-TD-MS074)。
关键词
过流保护
本安电源
截流
限流
over-current protection
intrinsic safe power supply
closure
circuit limiting
