Led driver circuit

Details Led driver circuit Led driver circuit

G - Physics

09

G

315/27, 375/40

G09G 3/32 (2006.01) H05B 33/08 (2006.01)

Patent

CA 1244871

ABSTRACT An LED driver circuit including a current source for generating constant drive current to a plurality of series connected LEDs, circuitry for selectively enabling and disabling predetermined ones of the LEDs and further circuitry for disabling the current source in the event none of the LEDs are enabled. The LED driver circuit is of simple design and low cost, and is characterized by low power consumption due to the current source being disabled in the event none of the LEDs are enabled.

496769

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