LED driver circuit

Details LED driver circuit LED driver circuit

2006-07-11

2006-07-11

Wong, Don (Department: 2821)

Electric lamp and discharge devices: systems

Current and/or voltage regulation

C315S307000

Reexamination Certificate

active

07075252

ABSTRACT:
An LED driver circuit that includes first and second switching mechanisms. The first mechanism is in a first switching condition when a source voltage is at or below a first threshold and moves to a second switching condition when the source exceeds the first threshold. The second mechanism is in a third switching condition when the source voltage is applied thereto and is at or below a second threshold less than the first threshold and moves to a fourth switching condition when the source voltage is applied thereto and is between the first and second thresholds. The third and fourth switching conditions each cause a safe current to flow through the LED. The second switching condition causes a safe current, preferably none, to flow through the LED, and the first switching condition causes the source voltage to be applied to the second mechanism. Also, a switching assembly including the circuit.

REFERENCES:
patent: 5111070 (1992-05-01), Murphy et al.
patent: 5196781 (1993-03-01), Jamieson et al.
patent: 5539352 (1996-07-01), DuPuy
patent: 5821697 (1998-10-01), Weber
patent: 6636104 (2003-10-01), Henry
patent: 6897717 (2005-05-01), Eddleman et al.
patent: 6949965 (2005-09-01), Jurgilewicz et al.
patent: 2005/0052168 (2005-03-01), Tazawa et al.
patent: 2005/0057866 (2005-03-01), Mergens et al.

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