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:
Aug. 02, 1977
Filed:
Nov. 19, 1975
Applicant:
Inventor:
Michel Gerard Gruson, Paris, FR;
Assignee:
Ducellier et Cie., Paris, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02H / ;
U.S. Cl.
CPC ...
361 18 ; 322 28 ;
Abstract
A voltage regulator for a vehicle battery charging system includes a Darlington pair for controlling the switching of current through the field winding of a generator. The input transistor of the Darlington pair has its base connected to one input terminal of the regulator by a normally non-conductive Zener diode of breakdown voltage at least five times the nominal voltage of the system, to protect the Darlington pair against over-voltage transients.