Electric lamp and discharge devices: systems – Automatic substitution of the load device or electrode
Patent
1984-04-11
1984-10-02
Dixon, Harold
Electric lamp and discharge devices: systems
Automatic substitution of the load device or electrode
315 90, 315177, 315283, 315324, H05B 3910
Patent
active
044750625
ABSTRACT:
A device is disclosed for converting fluorescent lighting fixtures, having a conventional series-type ballast with at least two lamps, to effect illumination of only one of the two lamps at a time, but automatically effecting illumination of the other lamp upon that one becoming disabled. The device includes an induction coil to increase the starting boost available to one of the two lamps and also has a varistor. The varistor may be connected across a secondary coil of the ballast which is then arranged to idle. With fixtures having two pairs of instant-start lamps, the varistor is instead connected to an electrode of one lamp of each pair. The device preferably has a series circuit comprising the varistor, the inductive coil, a capacitor and a resistor. Preferably four electrical connections, two across the varistor and two across the inductive coil, are provided to connect the device into the circuitry of the ballast and lamps. The device lengthens the effective life of the lamps, provides a softer but adequate amount of illumination, and effects a significant energy saving.
REFERENCES:
patent: 3701925 (1972-10-01), Nozawa et al.
patent: 3754160 (1973-08-01), Jensen et al.
patent: 4006384 (1977-02-01), Elms et al.
patent: 4079292 (1978-03-01), Kaneda
patent: 4339695 (1982-07-01), Siglock
patent: 4353009 (1982-10-01), Knoll
Milosevic Milorad L.
Radenkovich Michael
Bartlett Edward D. C.
Dixon Harold
LandOfFree
Economy device for fluorescent lighting fixtures does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Economy device for fluorescent lighting fixtures, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Economy device for fluorescent lighting fixtures will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-528279