| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a circuit configuration for controlling lighting of a plurality of LEDs, which reduces the number of connection terminals for the LEDs. <P>SOLUTION: A lighting circuit is composed of a power supply 1, a drive circuit 10 for regulating a current flowing through the LED, and switches 6-9 connected in a bridge circuit configuration. The lighting circuit supplies currents bidirectionally to LEDs 4, 5 connected parallel in the reverse direction with each other. This allows lighting control of the two LEDs 4, 5 to be performed with two terminals 2, 3. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
