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. 25, 2010
Filed:
Jan. 23, 2008
Michel Arpilliere, Poissy, FR;
Philippe Baudesson, La Boissiere, FR;
Hocine Boulharts, Triel sur Seine, FR;
Philippe Loizelet, Le Plessis Hebert, FR;
Michel Arpilliere, Poissy, FR;
Philippe Baudesson, La Boissiere, FR;
Hocine Boulharts, Triel sur Seine, FR;
Philippe Loizelet, Le Plessis Hebert, FR;
Schneider Toshiba Inverter Europe SAS, Pacy-sur-Eure, FR;
Abstract
A device controlling a JFET power electronic switch of normally ON type, including a main gate control circuit powered by a main power source for driving the gate of the JFET switch, a protection switching device that is switchable between two states, an auxiliary circuit controlling the switching device, and an auxiliary power source whose positive terminal is connected to the source of the JFET switch and whose negative terminal is connected to the gate of the JFET switch, bypassing the gate control circuit in one of the two positions of the switching device. The switching device can be an electromagnetic or electronic switch.