electric detonators and firing systems with this detonator

摘要

The present invention provides an electric type initiator having a stable electric characteristic, and thereby provides an electric type initiator having better reliability and an initiator assembly using the same. The present invention provides an electric type initiator comprising two electroconductive bodies, an insulating body provided between top portions of the electroconductive bodies, and an electric resistance wire spanned between the top portions of the electroconductive bodies which are exposed from an upper end portion of the insulating body, wherein a distance (L) of the electric insulating body between the top portions of the two electroconductive bodies is set to be not less than 0.8 times a horizontal distance (1) of a portion which determines the resistance value of the electric resistance wire between the electroconductive bodies. IMAGE