电容放电对开关型本质安全电源影响的研究

The Research about the Impact of Capacitive Discharge in Switching Intrinsically Safe Power Supply

开关电源在输出端并联有电容,属于电容性电路,当电路短路或闭合时,电容中储存的电能突然释放产生电火花,当能量超过了周围爆炸性混合物的最小点燃能量时会引起爆炸。电容电路的放电是一种最常见或基本的放电形式,研究电容性电路的放电特性对本质安全电源的影响意义重大。本文对电容性放电特性进行短路放电研究,在此基础上给出了一种解决方法和实用原理电路。此电路能够抑制电容放电产生火花对研制直流本质安全电源具有较大的实际应用价值。

Switching power supply in parallel with the output capacitor is capacitive circuit,when a short circuit or closed,the capacitance of the sudden release of stored energy generated by electric spark,the energy exceeds the explosive mixture around the minimum ignition energy for when it will cause an explosion.Capacitor discharge circuit is a discharge of the most common or basic forms of the discharge characteristics of capacitive circuit intrinsically safe power supply on the impact of great significance.In this paper,capacitive discharge characteristics of in-depth research in the development of the DC power supply of the security has great practical value.