| 摘要 |
<p>PURPOSE: A power supply device is provided to protect a light emitting module by blocking over-current and to increase the reliability of a lighting system such as a light emitting module having a light emitting diode. CONSTITUTION: One or more light emitting modules(121,131) include a light emitting unit having a plurality of light emitting diodes and a board having the light emitting diode. A power source unit(100A) supplies power to the light emitting module. A load detecting unit(140) detects over current from load change according to the number of board connections. A module protecting unit(150) outputs a current interception signal by the power source unit. The load detecting unit includes a comparison device for detecting over current.</p> |
