Electric lamp and discharge devices: systems – Periodic switch in the supply circuit – Impedance or current regulator in the supply circuit
Reexamination Certificate
2007-07-03
2007-07-03
Dinh, Trinh (Department: 2821)
Electric lamp and discharge devices: systems
Periodic switch in the supply circuit
Impedance or current regulator in the supply circuit
C315S277000, C315S308000, C315S312000
Reexamination Certificate
active
11190932
ABSTRACT:
A discharge lamp lighting apparatus is provided for lighting a plurality of discharge lamps including one reference lamp and at least one controllable lamp. First variable inductance element and lamp current detecting unit are connected to the reference lamp, second variable inductance and lamp current unit are connected to the controllable lamp, and a lamp current controlling circuit is connected to each of the first and second variable inductance elements. An output signal from the second lamp current detecting unit and also an output signal as a reference signal from the first lamp current detecting unit are connected to the lamp current controlling circuit for the controllable lamp, whereby the lamp current of the controllable lamp is controlled. The reference output signal is also connected to a control circuit, and the lamp currents of the reference and controllable lamps are controlled further by the on/off operation of the switching elements.
REFERENCES:
patent: 4016477 (1977-04-01), Ghiringhelli
patent: 4547705 (1985-10-01), Hirayama et al.
patent: 6188209 (2001-02-01), Poon et al.
patent: 6232726 (2001-05-01), Janczak
patent: 6515427 (2003-02-01), Oura et al.
patent: 6703796 (2004-03-01), Che-Chen et al.
patent: 6717372 (2004-04-01), Lin et al.
patent: 6731075 (2004-05-01), Pak
patent: 6784627 (2004-08-01), Suzuki et al.
patent: 2003/0085669 (2003-05-01), Pak
patent: 2004/0017163 (2004-01-01), Hsu
patent: 2004/0046512 (2004-03-01), Suzuki et al.
patent: 2004/0183477 (2004-09-01), Newman et al.
patent: 2005/0035730 (2005-02-01), Blum
patent: A 11-260580 (1999-09-01), None
Matsushima Mitsuo
Nishibori Kohei
Shinmen Hiroshi
Dinh Trinh
Le Tung
Minebea Co. Ltd.
LandOfFree
Discharge lamp lighting apparatus for lighting multiple... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Discharge lamp lighting apparatus for lighting multiple..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Discharge lamp lighting apparatus for lighting multiple... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3767471