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:
Apr. 07, 2015
Filed:
Apr. 19, 2010
Jügen Pirchenfellner, Wartberg/Aist, AT;
Günter Achleitner, Sattledt, AT;
Stephan Holzinger, Scharnstein, AT;
Walter Pammer, Bad Hall, AT;
Jügen Pirchenfellner, Wartberg/Aist, AT;
Günter Achleitner, Sattledt, AT;
Stephan Holzinger, Scharnstein, AT;
Walter Pammer, Bad Hall, AT;
FRONIUS International GmbH, Pettenbach, AT;
Abstract
The invention relates to a method and to an apparatus for protecting transistors (S, S; S, S) arranged in at least one path, wherein transistors (S, S; S, S) connected in series to which an input voltage (Ue) is applied are arranged in a path (), and the transistors (S, S; S, S) of a path are alternately switched between a conductive state and a blocking state in order to generate an output voltage (Ua) at the center of the path. In order to prevent both transistors (S, S; S, S) of a path from triggering, the blocking state of the second transistor (S; S) of the path is checked before switching a transistor (S; S) into the conductive state, and the switching is released by way of a signal generated during the check.