| 摘要 |
Recently, there has been a growing emphasis on the importance of green industries for energy savings, recently. As an example, the propagation of an LED lightening is activated. It is the trend toward the prohibition of sale on a light bulb of low efficiency. For energy savings, a dimmer switch in the method of a phase control using a TRIAC, which is an AC switching device, has been used. However, the dimmer switch of such method has no problem of generating a flicker when used for a light bulb. However, when it is used for an LED lamp, a flicker generates, and thus it is difficult to use. Moreover, when dimming is performed by using a dimmer in the method of a TRIAC, a power factor is remarkably reduced, and thus the quality of power source is greatly damaged. The present invention is devised to eliminate such problem. Since the dimmer switch of the present invention uses a high speed switching method using a DC switching device, as compared to the convention dimmer switch, there are improvement effects such that power factor is remarkably improved, and a flicker does not generate as to an LED lamp. Thus, the quality of a commercial power supply is not distorted, it is expected to greatly contribute to the distribution of an LED lamp and energy savings. |
