Abstract: An electronic ignition safety device configured to reject signals below a predetermined ‘all-fire’ voltage includes an exploding foil initiator having an electrical input and an output end, and an electronic fireset electrically connected to the electrical input of the exploding foil initiator. The device also includes a through bulkhead initiator (TBI) body, a donor charge disposed adjacent the output end of the exploding foil initiator, and an acceptor charge. The device further includes an integral barrier disposed between the donor charge and the acceptor charge, and one or more of the donor charge, the acceptor charge, and/or the integral barrier being disposed within a component part that is assembled to the TBI body. The device also includes an output charge disposed adjacent the acceptor charge.

Abstract: An initiator assembly (38) is factory-pre-assembled and comprises an initiation fixture (10) secured to a triggering device (40). The initiation fixture (10) comprises a unitary body, i.e., one without moving parts, and includes a bushing groove (18) to receive as an accessory an O-ring (64) to seal the device within the barrel (42) of the triggering device (40). A fuse/fixture sub-assembly (34) includes an initiation charge (30) disposed at the firing face (13a) and a signal-transmission fuse (22). The initiation fixture (110) may be a “universal” fixture having thereon optional external threads (36) and being otherwise dimensioned and configured to be received within either an internally threaded barrel (42) of a triggering device (40) or the barrel (42) of a triggering device which utilizes a fuse-holder cap (56). The initiator assembly (38) may include a spool (66) on which the signal-transmission tube (22) is wound.