PCT No. PCT/GB96/02987 Sec. 371 Date Dec. 10, 1998 Sec. 102(e) Date Dec. 10, 1998 PCT Filed Dec. 4, 1996 PCT Pub. No. WO97/21067 PCT Pub. Date Jun. 12, 1997An electronic explosives initiating device which includes a firing element which has a designed no-fire voltage and an operating circuit which operates at any voltage in a range of voltages which straddles the designed no-fire voltage.
