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. 08, 2019
Filed:
May. 20, 2018
Applicant:
Panasonic Intellectual Property Management Co., Ltd., Osaka, JP;
Inventors:
Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04B 10/116 (2013.01); H05B 33/08 (2006.01); H05B 37/02 (2006.01); H02M 3/335 (2006.01); H02M 1/42 (2007.01); H02M 3/156 (2006.01); H02M 1/14 (2006.01); H04B 10/50 (2013.01); H02M 1/00 (2006.01);
U.S. Cl.
CPC ...
H04B 10/116 (2013.01); H02M 1/4225 (2013.01); H02M 3/33507 (2013.01); H05B 33/0815 (2013.01); H05B 33/0845 (2013.01); H05B 37/0272 (2013.01); H02M 1/14 (2013.01); H02M 3/156 (2013.01); H02M 2001/007 (2013.01); H02M 2001/008 (2013.01); H04B 10/502 (2013.01); H05B 33/0824 (2013.01);
Abstract
A lighting device includes: a constant current supply circuit; and a first modulation circuit and a second modulation circuit that are connected in series between output terminals of the constant current supply circuit. The first modulation circuit includes a first capacitor that is connected in parallel to the first modulation circuit. The second modulation circuit includes a second capacitor that is connected in parallel to the second modulation circuit.