Fluorescent lamp power supply with low voltage lamp polarity rev

Details Fluorescent lamp power supply with low voltage lamp polarity rev Fluorescent lamp power supply with low voltage lamp polarity rev

1980-06-23

1982-04-27

LaRoche, Eugene R.

Electric lamp and discharge devices: systems

Plural power supplies

Series connected current supplies

315171, 315176, 315289, 315311, 315362, 315DIG5, 361246, H05B 4114

Patent

active

043273092

ABSTRACT:
A solid-state ballast circuit for starting and regulating a gaseous discharge lamp which is operated on direct current is arranged so as to permit the use of low voltage switching relays to effect polarity reversal of the lamp under load. A high voltage pulse source is connected in series with the lamp and a low voltage switching relay is connected in a manner to effect polarity reversal of the DC voltage applied to the combination of the high voltage source and lamp. The voltage appearing across the high voltage source is prevented from reaching the switching relays by virtue of a bridge rectifier circuit connected such that the pulse source and lamp appear as a current source for the rectifiers. The output terminals of the bridge rectifier arrangement are connected between the output terminals of the low voltage DC source thus limiting the voltage applied to the switching relays to a value not exceeding that of the DC source. The circuit also includes apparatus for monitoring the levels of lamp current and for disabling the lamp circuit if the monitored current exceeds a predetermined magnitude.

REFERENCES:
patent: 3767970 (1973-10-01), Collins
patent: 3801867 (1974-04-01), West et al.
patent: 3833761 (1974-09-01), Houck
patent: 3890562 (1975-06-01), West
patent: 3953763 (1976-04-01), Herrick
patent: 4260932 (1981-04-01), Johnson

Affiliated with

Also associated with

Rating

Fluorescent lamp power supply with low voltage lamp polarity rev does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Fluorescent lamp power supply with low voltage lamp polarity rev, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Fluorescent lamp power supply with low voltage lamp polarity rev will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2199842