Lighting apparatus with current feedback

Details Lighting apparatus with current feedback Lighting apparatus with current feedback

2011-01-18

2011-01-18

Vu, David Hung (Department: 2821)

Electric lamp and discharge devices: systems

Periodic switch in the supply circuit

Periodic switch in the primary circuit of the supply...

C315S276000, C315S307000

Reexamination Certificate

active

07872424

ABSTRACT:
A lighting apparatus comprises a plurality of light sources, a power conversion circuit, a plurality of load-driving coils and a feedback generation coil. The power conversion circuit generates a driving signal for the load-driving coils to generate substantially identical driving currents for driving every light source. Furthermore, the feedback generation coil generates a feedback signal based on the inductions of the currents flowing though the plurality of load driving coils.

REFERENCES:
patent: 6310444 (2001-10-01), Chang
patent: 6534934 (2003-03-01), Lin et al.
patent: 6717372 (2004-04-01), Lin et al.
patent: 2005/0007029 (2005-01-01), Fushimi
patent: M278026 (2005-10-01), None
“Office Action of Taiwan Counterpart Application”, issued on Jul. 13, 2010, p. 1-p. 5, in which the listed reference was cited.

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