Patent ID: 6609463
Filing Date: 2003-08-26
Classification: B60R

Abstract:
A firing device for a pyrotechnic vehicle-occupant protection device, comprising:a terminal for an external supply line; an electronic unit having a voltage input coupled to said terminal, a control input connected to said terminal, a voltage output, a firing output, and a test output; a firing switch connected to said firing output; a firing component connected to said voltage output and to said firing switch; a test switching device connected between said terminal and said voltage input, said test switching device connected to said test output of said electronic unit; and a bypass line connected between said test switching device and said voltage output, said test switching device disconnecting a connection between said terminal and said voltage input and connecting said terminal to said bypass line when a test signal is applied to said control input of said electronic unit; said electronic unit generating a predetermined firing voltage available at said voltage output when a supply voltage is applied to said voltage input, and when a firing signal is applied to said control input, said electronic unit generates a firing pulse available at said firing output, the firing pulse actuates said firing switch with a result that said firing component fires.