本安电源降低火花能量的几个措施  

Several Methods of Reducing Discharge Energy for Intrinsic Safety Power Supply

作　　者：董建国 李艳民 周兴东 张磊 DONG Jianguo;LI Yanmin;ZHOU Xingdong;ZHANG Lei(China Coal Electronic&Information Engineering(Tianjin)Co.,Ltd.,Tianjin 300457,China)

机构地区：[1]天津中煤电子信息工程有限公司,天津300457

出　　处：《煤矿安全》2020年第3期97-99,共3页Safety in Coal Mines

摘　　要：为了降低本安电源火花能量,提出了几项降低火花能量的措施。当发生过流保护时,可以将DC-DC或AC-DC模块尽快关掉,并且在主回路过流保护的设计中应避免开关管工作在深度饱和状态,以及将主回路开关管的控制电路设计成以导通代替关断,另外,还可以对电路板合理布线来改善火花能量。In order to reduce the discharge spark energy of the intrinsic safety power supply,several measures are proposed in this paper.When the over-current protection occurs,DC-DC or AC-DC module should be turned off as quickly as possible,and the switching transistors of main over-current protection should avoid working in deep saturation state.It is proved to be more effective in practice that the control circuit of switching transistor performs in the state of switch on in place of switch off.In addition,it will be helpful to decrease the discharge spark energy by routing properly for the circuit board.

关 键 词：本安电路 本安电源 火花能量 过流保护 放电时间 

分 类 号：TD685[矿业工程—矿山机电]