LINE VOLTAGE COMPENSATION AC LED DRIVING DEVICE

摘要

Disclosed is a line voltage compensation AC LED driving device. The line voltage compensation AC LED driving device comprises a line voltage compensation module and an AC LED driving module. The line voltage compensation module detects an output voltage of a rectifier bridge, and outputs a corresponding line voltage compensation reference voltage to the AC LED driving module according to the change of the output voltage of the rectifier bridge, and the AC LED driving module adjusts a driving current in real time according to the line voltage compensation reference voltage to keep the output power unchanged. In the present invention, the line voltage compensation module detects the output voltage of the rectifier bridge, and outputs the corresponding line voltage compensation reference voltage to the AC LED driving module according to the change of the output voltage of the rectifier bridge, and the AC LED driving module adjusts the driving current in real time according to the line voltage compensation reference voltage to keep the output power unchanged, and therefore the output luminous flux of a lamp can be basically unchanged, the luminance of the LED lamp is stable, and the voltage flicker of the LED lamp is eliminated.