In calefactive phase, the electro thermal model of hot bridge wire was established, the calefactive time of invariable current fire case and capacitance discharge fire case were both studied.

在升温阶段建立桥丝电热升温模型，分别求解恒定电流点火升温时间和电容放电点火升温时间。

To increase the precision of the electric igniting parameters of common fusehead, a kind of wrapper such as NC or CMC,can be used to wrap the bridge wire in common fuse head .

为了提高普通点火头发火参数的精度,可以在桥丝上涂覆一层硝化棉或羧甲基纤维素的涂层。