Patent ID: 8976503
Filing Date: 2015-03-10
Classification: F42B,F42C,G01R

Abstract:
1. A fireset for detonating an explosive, comprising: a discharge circuit including a quickly dischargeable energy storage device coupled in series with a LEEFI (Low Energy Exploding Foil Initiator); a high voltage source coupled to the discharge circuit to charge the quickly dischargeable energy storage device; a high voltage switch coupled to the discharge circuit and having a control input; a high voltage monitor coupled to the discharge circuit and having an output arranged to provide a voltage proportional to the voltage across the discharge circuit; and a control circuit having an input coupled to the output of the high voltage monitor and an output coupled to the control input of the high voltage switch, the control circuit constructed and arranged to close the high voltage switch based at least in part on the voltage proportional to the voltage across the discharge circuit exceeding a predetermined threshold, wherein the discharge circuit further includes an inductor coupled in series with the quickly dischargeable energy storage device to limit ringing when the high voltage switch is activated.