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:
Dec. 25, 2018
Filed:
Jun. 28, 2016
Applicant:
Panasonic Intellectual Property Management Co., Ltd., Osaka, JP;
Inventors:
Kiyosi Gotou, Hyogo, JP;
Tomohiro Miyake, Mie, JP;
Eiichirou Niikura, Mie, JP;
Kengo Miyamoto, Osaka, JP;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H05B 33/08 (2006.01); H05B 37/02 (2006.01); H02M 1/08 (2006.01); H03K 17/0412 (2006.01); H03K 17/687 (2006.01); H02M 7/25 (2006.01); H02M 1/00 (2006.01);
U.S. Cl.
CPC ...
H05B 33/0845 (2013.01); H02M 1/08 (2013.01); H02M 1/083 (2013.01); H02M 7/25 (2013.01); H03K 17/0412 (2013.01); H03K 17/687 (2013.01); H05B 33/0815 (2013.01); H05B 37/02 (2013.01); H02M 2001/0029 (2013.01); H02M 2001/0054 (2013.01); H03K 17/04123 (2013.01); Y02B 20/42 (2013.01); Y02B 20/46 (2013.01);
Abstract
A signal source generates a drive signal according to a dimming level. A discharge part includes a series circuit having a Zener diode and a rectifier element connected in series. The series circuit enables passage of a reverse current of the Zener diode. In the discharge part, the series circuit is electrically connected between a control terminal and the signal source to enable the reverse current of the Zener diode to flow from the control terminal to the signal source.