| 摘要 |
An ignition circuit (200) for a detonator (100) is disclosed. The circuit includes; an igniter (210) having a first terminal (211) and an opposing se cond terminal (212), a first diode (225) electrically connected in series wi th the igniter (210) at the first terminal (211), and a second diode (230) e lectrically connected in series with the igniter (210) at the second termina l (212). The first and second diodes (225, 230) each have an anode terminal (226, 231) and a cathode terminal (227, 232), wherein like terminals of the first and second diodes (225, 230) are electrically connected to the igniter (210), thereby defining proximal terminals proximate the igniter (210) and distal terminals on an opposing side of each respective diode (225,230). An energy source (215) and a switch (220) are electrically connected in series with each other, and are electrically connected across the distal terminals. Current flow through the igniter (210) sufficient to ignite the igniter (21 0) is prevented until an ignition voltage is applied to the distal terminals that is equal to or greater than the reverse breakdown voltage of the first diode (225) or the second diode (230).
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