Apparatus for driving light emitting element

Details Apparatus for driving light emitting element Apparatus for driving light emitting element

2011-05-10

2011-05-10

Le, Don P (Department: 2819)

Electric lamp and discharge devices: systems

Current and/or voltage regulation

Plural load device regulation

C315S307000, C315S18500S

Reexamination Certificate

active

07940014

ABSTRACT:
Provided is an apparatus for driving a light emitting element. The apparatus includes a power unit, a light emitting element array, a constant-current circuit unit, and a voltage limiting circuit unit. The power unit supplies driving power. The light emitting element array includes a plurality of light emitting elements connected in series between an anode terminal connected to the power unit and a cathode terminal. The constant-current circuit unit maintains a constant current flowing through the light emitting element array according to a first tuning voltage. The voltage limiting circuit unit is connected between the cathode terminal of the light emitting element array and the constant-current circuit unit, and divides a total voltage applied between the cathode terminal of the light emitting element array and a ground according to a second tuning voltage to limit a voltage applied to the constant-current circuit unit below a predetermined voltage.

REFERENCES:
patent: 6734639 (2004-05-01), Chang et al.
patent: 6864641 (2005-03-01), Dygert
patent: 7659672 (2010-02-01), Yang
patent: 7671575 (2010-03-01), Suzuki et al.
patent: 7728530 (2010-06-01), Wang et al.
patent: 7733030 (2010-06-01), Brokaw et al.
patent: 7821491 (2010-10-01), Tanaka
patent: 7868602 (2011-01-01), Omi et al.
patent: 10-2007-0015857 (2007-06-01), None

Affiliated with

Also associated with

Rating

Apparatus for driving light emitting element does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Apparatus for driving light emitting element, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus for driving light emitting element will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2671243