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. 09, 2002
Filed:
Apr. 13, 2000
Kamal Mourad, Turin, IT;
Gianfranco Bussolino, San Damiano d'Asti, IT;
Maurizio Avidano, Nichelino, IT;
GATE S.p.A., Turin, IT;
Abstract
A piloting circuit comprises a circuit branch which is intended to be connected to a DC voltage supply source in such a way as to receive a voltage of predetermined polarity, and in which the drain-source path of a (first) MOSFET transistor intended to receive an on-off piloting signal on its gate is connected in series with the load, a current recirculation diode connected in parallel to the load, and protection devices operable to prevent damage to the MOSFET transistor and/or the diode in the event of polarity reversal of the supply voltage. The protection function is achieved of an electronic switch disposed in series with the recirculation diode and piloted in such a way as to prevent the passage of current in this diode if a supply voltage of reversed polarity with respect to the predetermined polarity is applied to the said circuit branch.