Circuit for an LED array

Details Circuit for an LED array Circuit for an LED array

2008-01-08

2008-01-08

Owens, Douglas W. (Department: 2821)

Electric lamp and discharge devices: systems

Current and/or voltage regulation

C315S18500S, C315S224000, C315S302000, C362S800000

Reexamination Certificate

active

10496939

ABSTRACT:
A circuit arrangement for an LED array having two or more parallel-connected LED chains (LK1, LK2, LK3), in each of which at least one LED (2) is arranged and, when there are two or more LEDs (2), the latter are connected in series. In each case, the anode sides of the LED chains (LK1, LK2, LK3) can be coupled to the positive pole of a supply voltage (Uv) and the cathode sides can be coupled to the negative pole of the supply voltage (Uv). A regulating arrangement (RA1, RA2, RA3) for regulating an intended current distribution between the individual LED chains (LK1, LK2, LK3) is case connected in series with the respective LED chain (LK1, LK2, LK3).

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