Patent attributes
An inverter for driving light source is disclosed. The inverter includes a pulse control unit for producing a conduction period signal, a power switch unit driven by the conduction period signal and a power conversion unit for outputting a driving power, wherein a waveform modulation unit is further connected between the power switch unit and the power conversion unit, and the waveform modulation unit obtains the input power from the power switch unit and converts thereof into a modulation power, wherein the modulation power includes a positive edge modulation period with gradually rising voltage peak and a negative edge modulation period with gradually falling voltage peak, with the positive edge modulation period has a duration longer than that of the negative edge modulation period, and the modulation power is transmitted to the power conversion unit for being further converted into the driving power.
