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:
Jul. 09, 2024
Filed:
Apr. 29, 2021
Applicant:
Signify Holding B.v., Eindhoven, NL;
Inventors:
Gaoxian Jin, Eindhoven, NL;
Zhaoting Li, Eindhoven, NL;
Haimin Tao, Eindhoven, NL;
Raimundo De Heer Galisteo, Eindhoven, NL;
Assignee:
SIGNIFY HOLDING B.V., Eindhoven, NL;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F21K 9/278 (2016.01); F21K 9/272 (2016.01); H05B 45/3578 (2020.01); F21Y 115/10 (2016.01);
U.S. Cl.
CPC ...
F21K 9/278 (2016.08); F21K 9/272 (2016.08); H05B 45/3578 (2020.01); F21Y 2115/10 (2016.08);
Abstract
A lamp comprises an input for connection to a high frequency ballast for gas discharge lamps. A power supply unit obtains power from a LED on voltage of the LED of the lamp, and the power supply unit powers an isolation switch at the input. During a preheat stage of the ballast, the power supply unit does not close the isolation switch, but the isolation switch is closed when the high frequency ballast is in a later state, i.e. the ignition phase.