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. 04, 2014
Filed:
Oct. 11, 2011
Applicant:
Ruediger Laubenstein, Reutlingen, DE;
Inventor:
Ruediger Laubenstein, Reutlingen, DE;
Assignee:
Automotive Lighting Reutlingen GmbH, Reutlingen, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H05B 37/02 (2006.01); H05B 41/282 (2006.01); H05B 41/392 (2006.01); H05B 41/288 (2006.01); B60Q 1/00 (2006.01);
U.S. Cl.
CPC ...
H05B 41/2828 (2013.01); H05B 41/3928 (2013.01); Y02B 20/202 (2013.01); H05B 41/2887 (2013.01); H05B 41/2883 (2013.01); B60Q 1/0094 (2013.01);
Abstract
A method operates a light source of a motor-vehicle headlight with direct current. The light source is actually designed for operation with alternating current. The light source comprises an inductive load and is arranged between bridge sections of an electrical H-bridge circuit having four semiconductor switches. During 'alternating current' operation, the light source is supplied with the alternating current via the H-bridge circuit. Two of the semiconductor switches are arranged at a top and actuated via a respective bootstrap circuit.