Original poster: "by way of Terry Fritz <twftesla-at-uswest-dot-net>" <Fucian-at-aol-dot-com> Hi, all can anyone help me determine the time of a disharge?Say if i have a 450volt 7000uF cap and I have a 5uH coil and total resistance(SCR wiring and ESR of cap) is about.03 ohms.How do I determine the a single pulse time?How quickly will the current rise? Matt