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:
Nov. 23, 2004
Filed:
Mar. 24, 2003
Applicant:
Inventors:
Peter Friedrichs, Nürnberg, DE;
Heinz Mitlehner, Uttenreuth, DE;
Assignee:
SiCED Electronics Development GmbH & Co. KG, Erlangen, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H02H 3/22 ;
U.S. Cl.
CPC ...
H02H 3/22 ;
Abstract
A switching device for switching at a high operating voltage includes an LV switching element and a first HV switching element that are connected together in a cascode circuit. Furthermore, at least a second HV switching element is connected in series with the first HV switching element. A first protection element is connected between the HV grid terminals of the first and second HV switching elements, respectively.