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:
May. 14, 2019
Filed:
Apr. 06, 2018
Applicant:
Dialog Semiconductor Inc., Campbell, CA (US);
Assignee:
DIALOG SEMICONDUCTOR INC., Campbell, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H05B 33/08 (2006.01); H05B 37/02 (2006.01); H02M 1/42 (2007.01); H02M 7/219 (2006.01);
U.S. Cl.
CPC ...
H05B 33/0845 (2013.01); H02M 1/4233 (2013.01); H02M 7/219 (2013.01); H05B 33/0806 (2013.01); H05B 33/0815 (2013.01); H05B 33/0821 (2013.01); H05B 37/02 (2013.01);
Abstract
A direct AC LED lighting device is provided with a low-pass filter for filtering a threshold time in which a post diode bridge voltage exceeds an LED threshold voltage during a current AC half cycle for the post diode bridge voltage.