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:
Jan. 20, 2004
Filed:
Apr. 02, 2001
Applicant:
Inventors:
Andreas Hedenetz, Denkendorf, DE;
Kai Barnickel, Stuttgart, DE;
Josef Newald, Stuttgart, DE;
Udo Schulz, Vaihingen/enz, DE;
Assignee:
Robert Bosch GmbH, Stuttgart, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01R 2/922 ; G01R 2/726 ; H01L 4/108 ; F02M 3/708 ; B05B 3/04 ;
U.S. Cl.
CPC ...
G01R 2/922 ; G01R 2/726 ; H01L 4/108 ; F02M 3/708 ; B05B 3/04 ;
Abstract
A method for timed measurement of a voltage across a device in a charging circuit of a piezoelectric element. The voltage across the device is sensed and read at a predefined time in synchronization with an injection event of the at least one piezoelectric actuator. The device may be the piezoelectric element or a buffer capacitor.