Ignition circuit for a squib in an air bag in a vehicle

Details Ignition circuit for a squib in an air bag in a vehicle Ignition circuit for a squib in an air bag in a vehicle

1994-03-09

1996-09-10

Shoop, Jr., William M.

Electrical transmission or interconnection systems

Vehicle mounted systems

Automobile

307 91, 307110, 180271, 363 59, 2807281, 340436, 340669, H02J 106

Patent

active

055548903

ABSTRACT:
An object of the present invention is provide an ignition circuit for a squib in an air bag in a vehicle able to supply sufficient energy to ignite the squib which does not use converter or a high capacity capacitor.
The first capacitor 12 and the second capacitor 13 are charged by the battery 11. The sensor 17 is closed and the control circuit 10 makes the NPN type transistor 19 active when a collision is detected. The squib 16 is connected to the junction of the first capacitor 12 and the second capacitor 13 so that sufficient energy can be supplied to the squib even when a converter is not used.

REFERENCES:
patent: 3753001 (1973-08-01), Hiroshima et al.
patent: 4451743 (1984-05-01), Suzuki et al.
patent: 5023468 (1991-06-01), Drobny et al.
patent: 5095223 (1992-03-01), Thomas
patent: 5135254 (1992-08-01), Masegi et al.
patent: 5320382 (1994-06-01), Goldstein et al.
patent: 5373193 (1994-12-01), Nilsson
patent: 5418402 (1995-05-01), Fujiwara
patent: 5432385 (1995-07-01), Kincaid et al.

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