| 摘要 |
<p>According to an embodiment of the present invention, a lighting device comprises: a light emitting diode emitting light; a power supply unit supplying current to a first terminal of the light emitting diode; a resistance unit having resistance components and where one end is connected with a second terminal of the light emitting diode; and a dimming control unit connected with the second terminal of the light emitting diode, and controlling pulse width of current supplied to the light emitting diode by controlling the size of the resistance components, wherein the dimming control unit comprises at least one switching diode, and adjusts current supplied to the second terminal by controlling operation of the switching diode.</p> |
