Lossless circuit for sampling of lamp voltage

Details Lossless circuit for sampling of lamp voltage Lossless circuit for sampling of lamp voltage

2006-08-29

2006-08-29

Lee, Wilson (Department: 2821)

Electric lamp and discharge devices: systems

Current and/or voltage regulation

C315S224000, C315S307000, C315SDIG002

Reexamination Certificate

active

07098608

ABSTRACT:
An electronic ballast has a resonant tank circuit that includes a tank inductor and a tank capacitor connected in series. Lossless sampling of the output voltage of the electronic ballast is achieved by monitoring the voltage across a sampling capacitor placed in series with the tank capacitor. A resistive and capacitive filter is used to filter the monitored voltage such that it can be accurately received by a microcontroller. A resistor is connected in series with the sampling capacitor to produce an open circuit output voltage control signal that is used by the microcontroller to limit the open circuit output voltage. A cable compensation circuit is utilized to minimize variations in the open circuit voltage due to the connecting and disconnecting of a cable to the ballast output terminals.

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
European 0061730, Inui, Jun. 10, 1982.
European 0576991, Matsuzawa et al, May 1, 1994.

Affiliated with

Also associated with

Rating

Lossless circuit for sampling of lamp voltage does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Lossless circuit for sampling of lamp voltage, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Lossless circuit for sampling of lamp voltage will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3677417