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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.:

US 10690299 B1

PDFFull Text
Date of Patent:
Jun. 23, 2020

Filed:

Jun. 26, 2019

Method for driving led tube lamp

Applicant:

Jiaxing Super Lighting Electric Appliance Co., Ltd, Jiaxing, CN;

Inventors:

Aiming Xiong, Jiaxing, CN;

Xintong Liu, Shanghai, CN;

Assignee:

Jiaxing Super Lighting Electric Appliance Co., Ltd., Xiuzhou Area, Jiaxing, Zhejiang, CN;

Attorney:

Muir Patent Law, PLLC

Primary Examiner:

Anh Q Tran

Int. Cl.
CPC ...
H05B 37/00 (2006.01); H05B 41/00 (2006.01); F21K 9/278 (2016.01); F21K 9/272 (2016.01); F21V 25/02 (2006.01); H05K 1/00 (2006.01); F21V 23/00 (2015.01); F21V 3/06 (2018.01); F21V 29/70 (2015.01); F21V 15/015 (2006.01); F21V 23/02 (2006.01); F21K 9/275 (2016.01); H05B 45/00 (2020.01); H05B 45/10 (2020.01); H05B 45/20 (2020.01); H05B 45/37 (2020.01); H05B 45/50 (2020.01); F21Y 115/10 (2016.01); F21Y 103/10 (2016.01); F21V 29/83 (2015.01); H05K 1/18 (2006.01); H05K 1/14 (2006.01);
U.S. Cl.
CPC ...
F21K 9/278 (2016.08); F21K 9/272 (2016.08); F21K 9/275 (2016.08); F21V 3/061 (2018.02); F21V 15/015 (2013.01); F21V 23/003 (2013.01); F21V 23/005 (2013.01); F21V 23/023 (2013.01); F21V 25/02 (2013.01); F21V 29/70 (2015.01); H05B 45/00 (2020.01); H05B 45/10 (2020.01); H05B 45/20 (2020.01); H05B 45/37 (2020.01); H05B 45/50 (2020.01); H05K 1/00 (2013.01); F21V 23/02 (2013.01); F21V 29/83 (2015.01); F21Y 2103/10 (2016.08); F21Y 2115/10 (2016.08); H05K 1/14 (2013.01); H05K 1/189 (2013.01); H05K 2201/09027 (2013.01); H05K 2201/10106 (2013.01); Y02B 20/346 (2013.01);
Abstract

A method for driving an LED tube lamp includes providing a rectifying circuit for receiving an AC supply signal from a rectifying input side, wherein the AC supply signal has frequency of 50 Hz or 60 Hz when the LED tube lamp operates in a ballast-bypass mode, providing a filtering circuit electrically connected to the rectifying circuit, providing a driving circuit electrically connected to the filtering circuit and configured to generate a lamp driving signal to drive an LED module for emitting light, providing a circuit configured for forming a detection path between the rectifying input side and a ground terminal, causing a detection current with pulse waveform to flow through the detection path by turning on and cutting off the detection path, and generating a signal for indicating whether a foreign external impedance is electrically connected to the LED tube lamp in response to the detection current.

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