System and method for driving LED with high efficiency in...

Details System and method for driving LED with high efficiency in... System and method for driving LED with high efficiency in...

2011-03-08

2011-03-08

Tran, Thuy Vinh (Department: 2821)

Electric lamp and discharge devices: systems

Periodic switch in the supply circuit

Silicon controlled rectifier ignition

C315S247000, C315S291000, C315S299000

Reexamination Certificate

active

07902762

ABSTRACT:
A system and method for driving a LED is disclosed. The system is switched in turn between a constant-current mode circuit and a constant-voltage mode circuit. Accordingly, the forward voltage of the LED could be maintained constant, and the efficiency in power consumption could be substantially increased.

REFERENCES:
patent: 6888383 (2005-05-01), Fairbanks
patent: 7265504 (2007-09-01), Grant
patent: 2005/0207196 (2005-09-01), Holmes et al.
patent: 2009/0237007 (2009-09-01), Leng

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