AC LED CIRCUIT FOR IMPROVING FLICKER IN AC DIRECT DRIVING LED

摘要

The present invention relates to an AC direct drive LED flicker improvement circuit, comprising: a power supply unit for rectifying and supplying an AC input power; A plurality of LEDs illuminated by a power source supplied from the power supply unit; A plurality of LED operation switches connected to a rear end of the plurality of LEDs for switching on the LED current threshold voltage to be turned on by a switching control signal input from the control unit; The control circuit detects whether the input voltage inputted to the LED rises to reach the LED driving threshold voltage and outputs a switching control signal for operating the LED operation switch connected to each LED when the driving threshold voltage reaches a respective driving threshold voltage of the plurality of LEDs A control unit for controlling the operation of the LED operation switch; And a flicker-improving capacitor connected in parallel with the LED for eliminating flickering caused by the LED being turned on and off according to a cycle of the input voltage. According to the present invention, it is possible to minimize the flicker phenomenon caused by turning on and off the LED.