Electric lamp and discharge devices: systems – Periodic switch in the supply circuit – Impedance or current regulator in the supply circuit
Reexamination Certificate
2006-06-27
2006-06-27
Tran, Thuy V. (Department: 2821)
Electric lamp and discharge devices: systems
Periodic switch in the supply circuit
Impedance or current regulator in the supply circuit
C315S291000, C315S307000
Reexamination Certificate
active
07067989
ABSTRACT:
A modularized inverter control circuit makes use of a push-pull type control IC to connect other accessory circuit units, and is packaged and disposed on a printed circuit board to accomplish modularization for driving and control of various inverter circuits. The modularized inverter control circuit comprises a control IC for output of control signals, a lamp current feedback unit connected to the control IC and several lamps for getting working currents of the lamps, a turn-on voltage limit unit connected to the control IC and the lamps for getting working voltages of the lamps, a lamp protection unit connected to the control IC and the lamps and used for open-circuit and short-circuit protection of the lamps, a power source control unit connected to the control IC for providing an electric power, and a reference unit connected to the control IC for providing required reference values for the control IC.
REFERENCES:
patent: 5925990 (1999-07-01), Crouse et al.
patent: 5930121 (1999-07-01), Henry
patent: 6023132 (2000-02-01), Crouse et al.
patent: 6072282 (2000-06-01), Adamson
patent: 6094017 (2000-07-01), Adamson
patent: 6100647 (2000-08-01), Giannopoulos et al.
Chan Chun-Kong
Wang Jeng-Shong
Le Tung
Lien Chang Electronic Enterprise Co., Ltd.
Rosenberg , Klein & Lee
Tran Thuy V.
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