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:
Jun. 03, 2025
Filed:
Jul. 26, 2021
Applicant:
Signify Holding B.v., Eindhoven, NL;
Inventors:
Tijmen Cornelis Van Bodegraven, Eindhoven, NL;
Reinhold Elferich, Aachen, DE;
Assignee:
SIGNIFY HOLDING B.V., Eindhoven, NL;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H05B 45/382 (2020.01); H05B 45/00 (2022.01); H05B 45/10 (2020.01); H05B 45/3725 (2020.01); H05B 45/385 (2020.01);
U.S. Cl.
CPC ...
H05B 45/382 (2020.01);
Abstract
A lamp driver has a transformer, a primary side circuit and a secondary side circuit. The primary side circuit comprises a half bridge circuit and a sensor circuit for measuring a conduction time or switching frequency of one of the transistors of the half bridge circuit. An estimate is provided of the output voltage from the measured conduction time.