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:
Oct. 25, 2022
Filed:
Oct. 28, 2019
Signify Holding B.v., Eindhoven, NL;
Haimin Tao, Eindhoven, NL;
SIGNIFY HOLDING B.V., Eindhoven, NL;
Abstract
A double ended retrofit Light Emitting Diode (LED) based lighting device for preventing an excess of leakage current during installation of said lighting device, said lighting device comprising: —an LED load arranged for emitting light; —an LED driver arranged for receiving an Alternating Current (AC) mains voltage between at least two terminals and for driving said LED load by providing an LED output current to said LED load, and a Direct Current (DC) Voltage to said LED load; —an under-voltage protection circuit, arranged for measuring said DC voltage and for providing a high ohmic return path between said at least two terminals when said measured voltage is lower than a predetermined threshold.