US Patent 7409277 Driving circuit for crew protecting system
Patent 7409277 was granted and assigned to Denso on August, 2008 by the United States Patent and Trademark Office.
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A driving circuit for a crew protection device to be mounted in a vehicle includes a squib for operating the protection device when a preset amount of electric current is supplied thereto from the DC power source, a pair of first and second transistors connected between the squib and the DC power source, and a transistor control circuit. The transistor control circuit controls the first transistor to pass a first preset amount of electric current if output voltage of the DC power source is higher than a first threshold voltage and to pass an amount of electric current so that the voltage across the first transistor can be set to be lower than a second threshold voltage if output voltage of the DC power source becomes higher than the threshold voltage.
US Patent 07409277 Driving circuit for crew protecting system US Patent 7409277 Driving circuit for crew protecting system
US Patent 07409277 Driving circuit for crew protecting system
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