Electric lamp and discharge devices: systems – Pulsating or a.c. supply – With power factor control device
Reexamination Certificate
2007-03-20
2007-03-20
Vo, Tuyet Thi (Department: 2821)
Electric lamp and discharge devices: systems
Pulsating or a.c. supply
With power factor control device
C315S246000, C315S2090SC, C315S274000, C315S279000
Reexamination Certificate
active
11121066
ABSTRACT:
An electronic ballast for a lamp (16) having an input circuit (10) having a connection to a voltage supply, an output circuit (14) having a connection for the lamp (16), and a voltage converter apparatus (12), which is arranged between the input and the output circuit (10, 14), the voltage converter apparatus including an input capacitor (C1) and an output capacitor (C2), between which a switching apparatus (T1) and a freewheeling diode (D1) as well as at least one damping element (L2), at least one trapezoidal capacitor (C3) and an inductance (L1) are arranged, the voltage converter apparatus (12) being designed to carry out commutation, in each case a main circuit being defined by the current flow prior to and following commutation, at least one damping element (L2) and at least one trapezoidal capacitor (L2) being connected in series, and such a series circuit being arranged in a secondary circuit.
REFERENCES:
patent: 5528111 (1996-06-01), Konopka et al.
patent: 5925989 (1999-07-01), Blankers
patent: 5932974 (1999-08-01), Wood
patent: 5969484 (1999-10-01), Santi et al.
patent: 6465991 (2002-10-01), Chang
patent: 2003/0122505 (2003-07-01), Huber et al.
patent: 2004/0257000 (2004-12-01), Langeslag
Tamotsu Ninomiya, et al., “Design of a Nondissipative LC Snubber in a Forward Converter”,Electronics and Communications in Japan, Part 1, vol. 73, No. 10, 1990, pp. 63-71.
Carlos A. Munoz B., “Study of a New Passive Lossless Turn-off Snubber”, CIEP 98, Oct. 12, 1998, pp. 147-152 (see cited Euopean Patent Office Search Report for any further details as to publication).
J. Kingston, et al., “Application of a Passive Lossless Snubber to a Tapped Inductor Buck DC/DC Converter”,Power Electronics, Machines and Drives, Apr. 16-18, 2002, pp. 445-450 (see cited European Patent Office Search Report for any further details as to publication).
C. U-Yaisom, et al., “The Study and Analysis of The Conducted EMI Suppression on Power MOSFET Using Passive Snubber Circuits”, Electromagnetic Compatibility—2002 3rd International Symposium, May 21-24, 2002, pp. 561-564 (see cited Euopean Patent Office Search Report for any further details as to publication).
M. Jinno, et al., “An Efficient Active LC Snubber for Multi-Output Converters with Flyback Synchronous Rectifier”, Proceedings of IEEE 34th Annual Power Electronics Specialists Conference, Jun. 15-19, 2003, pp. 622-627 (see cited European Patent Office Search Report for any furhter details as to publication).
European Patent Office Search Report (dated Jul. 25, 2005; 4 pages total) for related European Patent Application No. 05008806.
Garavini Elisa
Osterried Josef
Fitch Even Tabin & Flannery
Patent-Treuhand-Gesellschaft fur Elektrisch Gluhlampen mbH
Vo Tuyet Thi
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