| 摘要 |
<p>PURPOSE: An illuminance control system of an energy saving LED lamp is provided to obtain high power conversion efficiency at high frequency by minimizing a switching power loss. CONSTITUTION: An LED lamp(10) is comprised of a plurality of LEDs. An LED driving unit(20) includes an EMI filter, a rectification circuit, a power factor correcting circuit, and a DC voltage reducing circuit. The LED driving unit drives the LED lamp. A controller(30) controls the LED driving unit. A sensor(40) transmits an operation signal to the controller.</p> |
