LED circuit with current control

Details LED circuit with current control LED circuit with current control

2007-06-28

2009-12-01

Vo, Tuyet (Department: 2821)

Electric lamp and discharge devices: systems

Current and/or voltage regulation

Automatic regulation

C315S307000, C315S291000, C315S247000, C315S224000

Reexamination Certificate

active

07626346

ABSTRACT:
Circuit for regulating a current applied to an electrical load, comprisinga compensation unit comprising a temperature sensor and providing an electrical signal at an output, the electrical signal depending on the current applied to the electrical load and on a temperature measured by the temperature sensor,a reference unit providing a reference electrical signal, anda control unit regulating the current applied to the electrical load depending on a difference between the electrical reference signal and the electrical signal provided at the output of the compensation unit.

REFERENCES:
patent: 6111739 (2000-08-01), Wu et al.
patent: 6400101 (2002-06-01), Biebl et al.
patent: 2002/0140380 (2002-10-01), Biebl
patent: 1 278 402 (2003-01-01), None
patent: 1 339 263 (2003-08-01), None
patent: WO 99/07059 (1999-02-01), None
patent: WO 99/07188 (1999-02-01), None

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