Igniter for air bag system

A method of activating at least one electrical igniter incorporated in a gas generator provided in an air bag system, comprising:

• connecting an electronic control unit to a power source and an impact detecting sensor;
• providing a bus line having a plurality of loop wires passing through the electronic control unit to supply and transmit current and required information;
• connecting the at least one electrical igniter to the electronic control unit through the bus line branched from predetermined portions of the bus line;
• providing the electrical igniter with a heat generating portion, a priming ignited by the heat generating portion, a capacitor, and an integrated circuit recorded with information to exhibit required functions;
• and
• providing the capacitor, the integrated circuit, in which information for developing a required function is stored, and the heat generating portion on a substrate provided vertically in the at least one electrical igniter;
• providing the capacitor and the integrated circuit such that at least the capacitor and the integrated circuit is apart from the priming and
• supplying the current for igniting the priming in to the electrical igniter through the capacitor.

A method of activating at least one electrical igniter incorporated in a gas generator provided in an air bag system, comprising:

• connecting an electronic control unit to a power source and an impact detecting sensor;
• providing a bus line having a plurality of loop wires passing through the electronic control unit to supply and transmit current and required information;
• connecting the at least one electrical igniter to the electronic control unit through the bus line branched from predetermined portions of the bus line;
• providing the electrical igniter with a heat generating portion, a priming ignited by the heat generating portion, and a capacitor;
• and
• providing the capacitor and an integrated circuit, in which information for developing a required function is stored, on a substrate provided vertically in each igniter;
• providing a header, which supports an electroconductive member for supplying and transmitting a current between the substrate and the heat generating portion, that vertically separates the substrate and the priming;
• providing the substrate below the header and the heat generating portion above the header;
• and
• supplying the current for igniting the priming to the electrical igniter through the capacitor.