to disconnect the resistive load r 300 from the two dc output terminals of the rectifier 100 during this period connecting or disconnecting the resistive load r 300 could be simply achieved by turning on or off the controlled switch m 300 in response to the comparison between the voltage sense signal and a reference voltage there is no doubt other types of comparators can also be used fig9 a and 9b shed light upon the effect of the dummy load 300 on the line current waveform fig9 a illustrates discontinuous or jumping points due to a dead time before the adoption of a dummy load 300 while fig9 b illustrates no discontinuous or jumping points due to no dead time after the adoption of a dummy load 300 the total harmonic distortion can be effectively decreased by eliminating discontinuous or jumping points from the line current with the use of a dummy load 300 drawing a line current only within the dead time in general electronic control gears for led light engine according to the embodiment of the invention can be integrated onto an integrated circuit or separated into different modules for example a rectifier a current regulator a string of bypass switches a valley filler and a dummy load can be integrated onto an integrated circuit also the rectifier the current regulator and a string of bypass switches can be integrated onto an integrated circuit and the valley filler as well as the dummy load are formed on another integrated circuit and then integrated on a circuit board a plurality of external led array segments are connected to the electronic control gears for led light engine the valley filler and the dummy load to form up the led lighting equipment while the invention has been described by way.