Electronic ballast with adaptive lamp preheat and ignition

Details Electronic ballast with adaptive lamp preheat and ignition Electronic ballast with adaptive lamp preheat and ignition

2007-07-03

2007-07-03

Vu, David (Department: 2821)

Electric lamp and discharge devices: systems

Current and/or voltage regulation

Automatic regulation

C315S291000, C315S224000, C315SDIG002

Reexamination Certificate

active

11004646

ABSTRACT:
An electronic ballast includes a microcontroller with software to provide an adaptive lamp preheat and ignition operation. The microcontroller commands a test frequency from the inverter and detects the frequency response of the resonant output circuit by measuring the voltage across the resonant capacitor. The measured voltages are compared to one or more reference voltages as the frequency is varied to select the optimal inverter frequency. An algorithm or look-up table is used to set the inverter frequencies for the lamp preheat and ignition phases.

REFERENCES:
patent: 5083065 (1992-01-01), Sakata et al.
patent: 5436529 (1995-07-01), Bobel
patent: 5444336 (1995-08-01), Ozawa et al.
patent: 5493180 (1996-02-01), Bezdon et al.
patent: 5500576 (1996-03-01), Russell et al.
patent: 5636111 (1997-06-01), Griffin et al.
patent: 5770925 (1998-06-01), Konopka et al.
patent: 5945788 (1999-08-01), Li et al.
patent: 5969483 (1999-10-01), Li et al.
patent: 5982106 (1999-11-01), Bobel
patent: 6121731 (2000-09-01), Kanazawa et al.
patent: 6127786 (2000-10-01), Moisin
patent: 6169369 (2001-01-01), Nerone et al.
patent: 6211623 (2001-04-01), Wilhelm et al.
patent: 6259215 (2001-07-01), Roman
patent: 6316887 (2001-11-01), Ribarich et al.
patent: 6424101 (2002-07-01), Sabate
patent: 6501225 (2002-12-01), Konopka
patent: 6552494 (2003-04-01), Randazzo et al.
patent: 6936973 (2005-08-01), Parra et al.
patent: 2002/0105283 (2002-08-01), Murakami et al.
patent: 2003/0025464 (2003-02-01), Konopka
patent: 0061730 (1982-06-01), None
patent: 0576991 (1994-05-01), None
patent: 2001-326089 (2001-11-01), None

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