US 12,464,620 B2
Systems and methods for providing power supply to current controllers associated with LED lighting
Zhuoyan Li, Shanghai (CN); Ke Li, Shanghai (CN); and Liqiang Zhu, Shanghai (CN)
Assigned to On-Bright Electronics (Shanghai) Co., Ltd., Shanghai (CN)
Filed by ON-BRIGHT ELECTRONICS (SHANGHAI) CO., LTD., Shanghai (CN)
Filed on Nov. 2, 2023, as Appl. No. 18/500,903.
Application 18/500,903 is a continuation of application No. 18/081,528, filed on Dec. 14, 2022, granted, now 11,856,670.
Application 18/081,528 is a continuation of application No. 17/096,741, filed on Nov. 12, 2020, granted, now 11,564,299, issued on Jan. 24, 2023.
Claims priority of application No. 201911316902.5 (CN), filed on Dec. 19, 2019.
Prior Publication US 2024/0179817 A1, May 30, 2024
Int. Cl. H05B 45/44 (2020.01); H05B 45/14 (2020.01)
CPC H05B 45/44 (2020.01) [H05B 45/14 (2020.01)] 23 Claims
OG exemplary drawing
 
1. A system comprising:
a power supply controller configured to receive a voltage to generate a first signal based at least in part on the voltage;
wherein the power supply controller is further configured to:
if the voltage has not remained higher than a predetermined voltage threshold for a time duration that is equal to or longer than a predetermined time threshold, generate the first signal at a first level to keep a transistor turned on, the predetermined time threshold being larger than zero in magnitude; and
if the voltage has remained higher than the predetermined voltage threshold for the time duration that is equal to or longer than the predetermined time threshold, generate the first signal at a second level to allow the transistor to be turned on and to be turned off, the second level being different from the first level.