Method and a driver circuit for LED operation

Details Method and a driver circuit for LED operation Method and a driver circuit for LED operation

2005-11-25

2011-11-22

Vu, David Hung (Department: 2821)

Electric lamp and discharge devices: systems

Current and/or voltage regulation

C315S224000, C315S276000, C315S307000

Reexamination Certificate

active

08063577

ABSTRACT:
A driver circuit for operating one or more light emitting diodes(LEDs) is disclosed. An alternating supply current is generated and transformed to an alternating secondary winding voltage. Using rectifier means, such as diodes or synchronous switches, the alternating secondary winding voltage is converted to a substantially constant load current by using a buffer element. The buffer element comprises an output choke, such as an inductor. The power transferred from the power source to the LEDs may be controlled by frequency control of the alternating supply current.

REFERENCES:
patent: 6040663 (2000-03-01), Bucks et al.
patent: 6411045 (2002-06-01), Nerone
patent: 6577512 (2003-06-01), Tripathi et al.
patent: 6847169 (2005-01-01), Ito et al.
patent: 6858994 (2005-02-01), Vollrath
patent: 7178971 (2007-02-01), Pong et al.
patent: 7298634 (2007-11-01), Yasumura
patent: 2002/0186026 (2002-12-01), Elferich
patent: 2004/0184289 (2004-09-01), Vinciarelli
patent: 2005/0029966 (2005-02-01), Buonocunto
patent: W02005048658 (2005-05-01), None

Affiliated with

Also associated with

Rating

Method and a driver circuit for LED operation does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method and a driver circuit for LED operation, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and a driver circuit for LED operation will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4305144