| 摘要 |
<p>A lighting driver includes a detector connected to mains voltage, a power converter connected to a DC power supply, and a controller. The detector detects a voltage level of the mains voltage. The power converter provides a DC drive current for driving a plurality of light emitting diodes (LEDs) responsive to the DC power supply. The controller controls the power converter to supply the DC drive current when the detected voltage level of the mains voltage drops below a threshold.</p> |
