Ballast containing circuit for measuring increase in DC voltage

Details Ballast containing circuit for measuring increase in DC voltage Ballast containing circuit for measuring increase in DC voltage

1994-05-03

1995-12-12

Neyzari, Ali

Electric lamp and discharge devices: systems

Periodic switch in the supply circuit

Silicon controlled rectifier ignition

315224, 315225, 315307, H05B 3702

Patent

active

054752841

ABSTRACT:
A ballast includes an inverter for providing an AC voltage to a discharge lamp. As the lamp approaches end-of-life a DC voltage component develops across the lamp. The ballast includes circuitry for monitoring the condition of each of the cathodes by measuring this DC voltage component. After a predetermined increase in this DC voltage component, the inverter is disabled in order to prevent excessive heating of the cathodes.

REFERENCES:
patent: 4503363 (1985-03-01), Nilssen
patent: 4554487 (1985-11-01), Nilssen
patent: 5075599 (1991-12-01), Overgoor et al.
patent: 5138235 (1992-08-01), Sun et al.
patent: 5148359 (1992-09-01), Nguyen
patent: 5262699 (1993-11-01), Sun et al.
patent: 5293099 (1994-03-01), Bobel

Affiliated with

Also associated with

Rating

Ballast containing circuit for measuring increase in DC 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 Ballast containing circuit for measuring increase in DC voltage , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Ballast containing circuit for measuring increase in DC voltage will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1362218