| 摘要 |
PURPOSE: An LED module and a control method thereof are provided to correspond to an environmental element and a user taste by controlling the color of light from a plurality of LED circuits. CONSTITUTION: A plurality of constant current circuits(120) is connected to a DC power supply unit(110). A plurality of LED circuits(130) is respectively connected to the plurality of constant current circuits. The plurality of LED circuits respectively emits the red, green, and blue and white light. The constant current circuit includes an LM 317, a resistor for controlling the current, and a wire. The LM 317 includes a power input terminal, a power output terminal, and a control terminal. The resistor for controlling the current is connected to the power output terminal of the LM 317. The wiring is connected between the control terminal of the LM 317 and the resistor for controlling the current.
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