感应线圈（induction coil）也称为点火线圈，是一种变压器[1][2][3]，可以从低压直流电当中产生高电压脉冲[4][5]。感应线圈的一次侧直流电会持续有机械开关开启及关闭，目的让使磁通量变化，产生够大的感应电压[4]。
参考资料
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