煤矿用本质安全型电源设计理论研究

Research on design theory of intrinsically safe power supply for coal mine

过电压保护、过电流保护及短路保护电路是煤矿用本质安全型电源普遍采用的电路。随着煤矿井下监控检测类仪器仪表类产品越来越广泛,对供电电路的本质安全型电源要求也越来越高,本文介绍了几种煤矿用本质安全型电源的设计方法,其中详细介绍了关于过压保护和过流保护电路的工作原理。

Overvoltage protection,over-current protection and short-circuit protection circuit are widely used in coal mine intrinsically safe power supply.With the coal mine underground monitoring and testing instruments and meters products are more and more widely used,the requirement of intrinsically safe power supply for power supply circuit is also higher and higher,this paper introduces several design methods of intrinsically safe power supply for coal mine,the working principle of over-voltage protection and over-current protection circuit is introduced in detail.