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:
Jun. 13, 2006
Filed:
Sep. 19, 2001
Wilhelm Fey, Dirmstein, DE;
Ernst Krause, Oftersheim, DE;
Wilhelm Fey, Dirmstein, DE;
Ernst Krause, Oftersheim, DE;
Pepperl & Fuchs GmbH, Mannheim-Schoenau, DE;
Abstract
A protective circuit for limiting the voltage for a device to be protected, particularly a load with an upstream-connected voltage and current limiting device. The device to be protected is provided in an output circuit of the protective circuit and is separable by means of a switching element, a voltage detector being provided with an electronic switch on the one hand and a voltage sensor on the other. The control terminal of the electronic switch is in electrical operative connection with the voltage sensor. A microdevice with a control circuit is provided, the microdevice having the switching element and being designed with a high input resistance of the control circuit. The control circuit is galvanically separated from the output circuit and switchable by the control circuit. The output circuit in the opened state has a galvanic separation of its output terminals.