| 摘要 |
An LED controller is disclosed herein. An embodiment of the controller includes a first input connectable to a power source and an output connectable to at least one light-emitting diode (LED). A power factor correction circuit is coupled between the first input and the output, wherein the power factor correction circuit operates in a first state when the power factor is corrected and wherein the power factor correction circuit operates in a second state when the power factor is not corrected. The power factor correction circuit is in the first state when no dimming of the LED is sensed, and the power factor correction circuit is in the second state when dimming of the LED is sensed. |
