It includes a dimming signal containing a high frequency burst signal having a modulation frequency for the coordination of the operation of the circuit led

The present invention relates to a method for controlling the at least one LED, the LED is supplied with a DC voltage or AC voltage is rectified by using a coil (L1) and by controlling / adjusting the first switching unit (SR) timing (S1) to provide for the at least one LED supply voltage, which is turned on when the first switch S1, the coil (L1) temporarily stores energy which is cut off at the first switch (S1) by a diode (D1) and at least one LED release, wherein the control unit (SR) using a dimming signal to control the first switch (Sl), the method being characterized in that, the dimming signal is generated by external associated with the low and high frequency signals, wherein the pulse of the low frequency signal an integer multiple of the width (TON * LF) is selected as high-frequency signal cycle time.