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. 03, 1998
Filed:
Dec. 27, 1996
Applicant:
Inventors:
Francesco Pulvirenti, Acireale, IT;
Gregorio Bontempo, Barcellona P.G., IT;
Roberto Gariboldi, Lacchiarella, IT;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03K / ; H02H / ;
U.S. Cl.
CPC ...
327309 ; 327310 ; 327312 ; 327314 ; 327320 ; 327194 ; 327322 ; 326538 ;
Abstract
The present invention is aimed at providing a method and a circuit for protecting the output stage of a power actuator against voltage transients of the surge type. In particular, it provides protection against voltage surge transients of the kind described by International Standard IEC 801-5, for a power transistor contained in the output stage of the actuator. The method of this invention provides for: