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:
Jul. 29, 2008
Filed:
Mar. 30, 2004
Walter Apfelbacher, Freihung, DE;
Norbert Reichenbach, Amberg, DE;
Johann Seitz, Amberg, DE;
Siemens Aktiengesellschaft, Munich, DE;
Abstract
A control input of an electrical device is disclosed, which is resistant to parasitic currents and which is especially suitable for a large bandwidth of various driving voltages. For this purpose, a control input circuit includes a constant current sink connected to a control line, whose current consumption during the duration of the detection pulse assumes a detection value relative which the power consumption between two successive detection pulses is reduced. The circuit also includes an evaluation module that analyzes the input current flowing in the control line and that indicates a control signal if, during the detection pulse, the input current does not fall below a predetermined switch-on value for a predetermined duty cycle.