| 摘要 |
PURPOSE:To provide a drive circuit which can drive plural airbags and belt pretensioners and can always make diagnosis and can be manufacture at a low cost. CONSTITUTION:A drive circuit is composed of an acceleration switch 1 operated by vehicular acceleration/deceleration, ignition devices 3, 4, 5, 6 for expanding an airbag, transisters 7, 9, 11, 13 for driving respective ignition devices, a transister 15 connected to these transisters in series, resisters 2, 8, 10, 12, 14 16 connected in parallel to respective switching elements and an A/D converter 17 for measuring the voltage of the transister 15. |
