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:
May. 06, 2008
Filed:
Nov. 12, 2004
Franz Allmeier, Mintraching, DE;
Volker Karrer, Regensburg, DE;
Thomas Reindl, Weiden, DE;
Siemens Aktiengesellschaft, Munich, DE;
Abstract
A protective circuit (), particularly for overvoltage-protecting an electronic motor control unit, comprises a signal connection receiving and/or emitting an electrical signal, a switching element () which activates or deactivates a protective interrupter and is controllable via a control input, and a control circuit (), the input side of which is connected to the signal connection while the output side thereof is connected to the control input of the switching element () in order to activate or deactivate the protective interrupter according to the electrical state at the signal connection. The control circuit () has a hysteresis characteristic regarding the electrical state at the signal connection.