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. 11, 2018
Filed:
Feb. 14, 2018
Applicant:
Delta Electronics, Inc., Taoyuan, TW;
Inventors:
Yung-Chuan Lu, Taoyuan, TW;
Ching-Ho Chou, Taoyuan, TW;
Assignee:
DELTA ELECTRONICS, INC., Taoyuan, TW;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H05B 37/02 (2006.01); H05B 39/02 (2006.01); G05F 1/12 (2006.01); H05B 41/16 (2006.01); H05B 41/36 (2006.01); H05B 39/04 (2006.01); H05B 41/24 (2006.01); H05B 41/14 (2006.01);
U.S. Cl.
CPC ...
G05F 1/12 (2013.01); H05B 37/02 (2013.01); H05B 39/04 (2013.01); H05B 41/14 (2013.01); H05B 41/16 (2013.01); H05B 41/24 (2013.01); H05B 41/36 (2013.01);
Abstract
An electrical ballast includes an inverter circuit and a detection circuit. The inverter circuit is configured to receive a dc voltage and provide an output voltage to a lighting module. The detection circuit is electrically coupled to the inverter circuit and a voltage source, and configured to detect an ac voltage signal in the inverter circuit, and pull down the voltage source from a supply level to an under voltage locking level to shut down the inverter circuit on the condition that the ac voltage signal is greater than a threshold value, and restart the inverter circuit after a delay period.