Current source for a supplemental inflatable restraint system

Details Current source for a supplemental inflatable restraint system Current source for a supplemental inflatable restraint system

1992-10-19

1994-05-03

Pellinen, A. D.

Electrical transmission or interconnection systems

Vehicle mounted systems

Automobile

340436, 280735, B60R 2132

Patent

active

053090306

ABSTRACT:
A supplemental inflatable restraint system with a controllable current source comprises a sense element, a switch device coupled to the sense element, and a squib coupled to the switch device, wherein the sense element, switch device and squib are coupled in a series circuit between a power source and a ground. A deploy control circuit is coupled to the switch device, and, in response to a deploy command, forward biases the switch device allowing electric current to flow through the sense element, switch device and squib to deploy a supplemental inflatable restraint. A current control circuit is coupled to the sense element and switch device and responds to the current flow through the sense element and regulates the switch device, effectively limiting current through the series circuit to a predetermined value.

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patent: 5155376 (1992-10-01), Okano

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