Discharge lamp lighting circuit with an open protection circuit

Details Discharge lamp lighting circuit with an open protection circuit Discharge lamp lighting circuit with an open protection circuit

2007-04-24

2007-04-24

Phan, Tho (Department: 2821)

Electric lamp and discharge devices: systems

Condenser in the supply circuit

Inductance in the condenser circuit

C315S224000, C315S2090SC, C315S208000, C315S360000, C315S247000, C315S219000, C315S225000

Reexamination Certificate

active

11163471

ABSTRACT:
A discharge lamp lighting circuit includes an open protection circuit. The discharge lamp lighting circuit includes an open protection circuit and an over-voltage detecting circuit. The open protection circuit detects whether any of the discharge lamps are unlit, and sends a voltage control signal to a control circuit if one of the discharge lamps is not lit, whereby the control circuit sends a pulse signal to a buck converter according to the voltage control signal, and the buck converter generates and outputs a DC voltage according to the pulse signal. If the DC voltage from the buck converter reaches a predetermined voltage, the over-voltage detecting circuit conducts and sends a voltage control signal to the control circuit, and the control circuit ceases operating according to the voltage control signal. Consequently, damage to the other normal discharge lamps is prevented.

REFERENCES:
patent: 5363020 (1994-11-01), Chen et al.
patent: 5652479 (1997-07-01), LoCascio et al.
patent: 5818707 (1998-10-01), Seong et al.
patent: 5844378 (1998-12-01), LoCascio et al.
patent: 6555972 (2003-04-01), Lestician
patent: 6710555 (2004-03-01), Terada et al.
patent: 6864645 (2005-03-01), Sun et al.

Affiliated with

Also associated with

Rating

Discharge lamp lighting circuit with an open protection circuit does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Discharge lamp lighting circuit with an open protection circuit, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Discharge lamp lighting circuit with an open protection circuit will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3802525