| 摘要 |
<p>PURPOSE: An LED lamp module is provided to minimize power consumption when an LED array is driven, thereby driving the LED lamp module by a natural cooling method. CONSTITUTION: An AC filter unit(2) eliminates a noise component from an AC input. A rectifying unit(4) converts an AC voltage into a DC voltage. A power factor compensating unit compensates for the power factor of an output voltage of the rectifying unit to output a fixed voltage. A DC-DC controller(8) controls the output signal of the power factor compensating unit without loss. A switching controller(12) repetitively turns an LED group(10) on/off.</p> |
