US 12,356,522 B2
Driver for LED device, LED system, and adaptation method for LED device
Qiang Zou, ShaanXi (CN); Zhichao Liu, Shanghai (CN); and Qi Yan, ShaanXi (CN)
Assigned to SAVANT TECHNOLOGIES LLC, East Cleveland, OH (US)
Filed by SAVANT TECHNOLOGIES LLC, East Cleveland, OH (US)
Filed on Jun. 13, 2024, as Appl. No. 18/742,042.
Application 18/742,042 is a continuation of application No. 17/761,258, granted, now 12,041,701, previously published as PCT/CN2019/106175, filed on Sep. 17, 2019.
Prior Publication US 2024/0334568 A1, Oct. 3, 2024
Int. Cl. H05B 45/37 (2020.01); H05B 45/305 (2020.01); H05B 45/345 (2020.01)
CPC H05B 45/37 (2020.01) [H05B 45/305 (2020.01); H05B 45/345 (2020.01)] 14 Claims
OG exemplary drawing
 
1. A method for operating a driver circuit for a light-emitting diode (LED) device, wherein the driver circuit comprises a rectifier operatively coupled to a ballast, a current regulator operatively coupled to the rectifier and to the LED device, and a detecting module operatively coupled to the LED device and to the current regulator, comprising:
rectifying, by the rectifier of the driver circuit during a startup stage, direct current received from the ballast and providing the rectified current to the current regulator;
detecting, by the detecting module of the driver circuit, a current through the LED device provided by the current regulator during the startup stage, wherein a value of the current through the LED device is a detecting indictor having a preset value range;
providing, by the detecting module, the value of the current through the LED device to the current regulator;
determining, by the current regulator, that the value of the current is outside the preset value range;
converting, by the current regulator, the rectified current from the rectifier into a driving current with a value within the preset value range; and
outputting, by the current regulator, the driving current to the LED device.