Circuit arrangement and method for the operation of a...

Details Circuit arrangement and method for the operation of a... Circuit arrangement and method for the operation of a...

2011-03-01

2011-03-01

Owens, Douglas W (Department: 2821)

Electric lamp and discharge devices: systems

Pulsating or a.c. supply

C315S307000

Reexamination Certificate

active

07898186

ABSTRACT:
A circuit arrangement for providing a lamp wattage to a high-pressure gas discharge lamp (Lp), the arrangement includes an inverter (T1, T2) which supplies to the high-pressure gas discharge lamp (Lp), a lamp current (IL) which is essentially an alternating current with an operating frequency which is frequency modulated in a frequency range between a minimum frequency and a maximum frequency, an arithmetic mean is defined which is equal to the temporal mean of the frequency values for the operating frequency, swept in a lamp operation. A limit mean is defined which is equal to one half of the sum of minimum frequency and maximum frequency and is less that the arithmetic mean.

REFERENCES:
patent: 6424100 (2002-07-01), Kominami et al.
patent: 6509698 (2003-01-01), Kominami et al.
patent: 6680585 (2004-01-01), Trestman
patent: 6967449 (2005-11-01), Ishihara et al.
patent: 2003/0111968 (2003-06-01), Trestman
patent: 0 397 334 (1990-11-01), None
patent: 0 893 943 (1999-01-01), None
patent: 1 434 471 (2004-06-01), None
patent: 1 519 637 (2005-03-01), None
Duk Jin Oh et al: “A Novel Complex Modulation Method for the Metal Halide Lamp Ballast”, Nov. 5, 2002, pp. 377-382.
Bill Andreycak, Phase Shifted, Zero Voltage Transition Design Considerations and the UC3875 PWM Controller, May 1997.

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