| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a lighting system capable of improving lighting stability of a full lighting state to a dimming lower limit. <P>SOLUTION: A lighting system 1 comprises: an LED26; a buck converter 10 which generates a current for driving the LED26; a dimming control circuit 22 which control the current generated by the buck converter 10; a variable resistive element for the full lighting 23a which is connected to an input terminal 101 when a level of a dimming signal is at a high level side; and a variable resistive element for the dimming lower limit 23b which is connected to the input terminal 101 when a level of the dimming signal is at a low level side. <P>COPYRIGHT: (C)2013,JPO&INPIT |
