| 摘要 |
An igniter for an air bag device includes first and second backup power circuits having first and second condensers, respectively, the first condenser having a capacity greater than that of the second condenser, a first ignition device formed of a first squib and a first ignition switch connected in series, a second ignition device formed of a second squib and a second ignition switch connected in series, and a control device connected to the first and second ignition switches and the operating switch for actuating the switches upon receiving an operation signal from a vehicle. Upon receiving the operation signal, the control device actuates firstly the first ignition switch to actuate the first squib by the first condenser of the first backup circuit, and after a predetermined time, secondly the second ignition switch and the operating switch to actuate the second squib by the first and second condensers of the first and second backup circuits. Thus, the capacity of the second condenser can be lowered.
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