The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 10, 2002
Filed:
Jan. 31, 2000
Horst Belau, Langquaid, DE;
Christian Zelger, Regensburg, DE;
Siemens Aktiengesellschaft, Munich, DE;
Abstract
A circuit apparatus for controlling an occupant protection device for a motor vehicle has a parallel circuit, which includes an energy storage capacitor and a series circuit. The series circuit includes a triggering element and a controllable power stage. An energy source supplies a test current to the parallel circuit. When the energy storage capacitor is at least substantially discharged and when the power stage is switched to a conducting state for test purposes, a test voltage from the series circuit is taken up and evaluated. A method of testing an operability of an occupant protection device for a motor vehicle is also provided.