Abstract:

In view of the inflammable and explosive environment of coal mines,a design of intrinsically safe LED driver power supply based on the switching power supply technology is presented.It has the feature of electrical isolation with a variety of protection functions,such as over voltage protection,over current protection and so on,thus guaranteeing that,the energy released is in line with national standards of intrinsically safe should circuit fault occur.It can improve the security and reliability of coal mine.

Key words: coal mine;aberdeen type;LED;switch power supply