This invention relates to a lighting adjusting device characterizing in including a signal input and process part, a control generation part and a executing part, in which, the signal input process part includes a signal input unit and a process unit, the control generation part includes a microcomputer control unit and a feedback unit, the executing part includes a master IGBT unit, an assistant IGBT unit, a filter unit and a controlled power unit, the signal input end of the control generation part is connected with the output of the signal input process part, the control output end is connected with the input of the executing part, the input of the feedback is connected with the feedback output of the executing part via the feedback unit and the feedback output is connected with the feedback input of the signal input and process part, both output current and voltage belong to sine waves to drive the loads of motors. |