| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a power supply unit and a luminaire, enabling a semiconductor light-emitting element to obtain stable lighting state. <P>SOLUTION: The power supply unit cancels a dimming signal only during a predetermined time T immediately after turning on the power supply unit to light up light-emitting diodes 26-29 at a predetermined light quantity (e.g. minimum light quantity), and releases the dimming signal from cancellation after the predetermined time T elapses to light up the light-emitting diodes 26-29 at a light quantity indicated by the dimming signal. <P>COPYRIGHT: (C)2010,JPO&INPIT</p> |
