ILLUMINATION CIRCUIT

Abstract: an illumination circuit includes a first voltage source, plural first light-emitting diodes, plural first resistive elements, a first impedance element, a second voltage source, plural second light-emitting diodes, plural second resistive elements and a second impedance element. the plural first light-emitting diodes are connected with each other in parallel. a first terminal of each first resistive element is connected with a first output terminal of the corresponding first light-emitting diode. a second terminal of each first resistive element is connected with a first negative electrode of the first voltage source. a first terminal of the first impedance element is connected with a first positive electrode of the first voltage source. a second terminal of the first impedance element is connected with a first input terminal of each first light-emitting diodes. the plural second light-emitting diodes are connected with each other in parallel.

Inventor(s): Yu-Zeng Yang, Sheng-Wen Wang, Hui-Ling Lin

CPC Classification: H05B45/24 (using electrical feedback from LEDs or from LED modules)

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