| 摘要 |
<p>This invention provides an initiating device (10) for an electronic detonator, which includes two spaced electrical conductors (12) located on an insulating substrate (14); and two separate resistive means in the form of thick film resistive bridges (16) extending between the electrical conductors (12), for releasing energy upon application of an electrical current to the resistive bridges (16). An explosives or pyrotechnic composition, generally designated by reference numeral (18), covers the resistive bridges (16). It will be appreciated that should one of the bridges (16) fail, the other bridge (16) would still initiate the device (10). The size of the contact interface between the bridge (16) and the explosives composition (18) is also doubled, making the initiating device (10) even more reliable. As a result the initiating device (10) is suitable for a wide range of different applications.</p> |
