Electric lamp and discharge devices: systems – Discharge device and/or rectifier in the supply circuit – Plural discharge devices and/or rectifiers in the supply...
Patent
1976-07-26
1977-08-30
LaRoche, Eugene R.
Electric lamp and discharge devices: systems
Discharge device and/or rectifier in the supply circuit
Plural discharge devices and/or rectifiers in the supply...
315171, 315174, 315208, 315240, 315283, 315DIG7, H05B 4116, H05B 4136
Patent
active
040457109
ABSTRACT:
Color rendition of high pressure sodium vapor discharge lamps is improved by disclosed operating circuit for applying pulsed direct current to the lamp. The circuit includes a direct current ballast circuit having a low ripple factor, a filter capacitor charged by the output of the ballast circuit, and a pulsing circuit comprising a transistor switch which operates to apply DC pulses on the lamp at a predetermined repetition rate and duty cycle to provide desired color properties of the lamp.
REFERENCES:
patent: 3143701 (1964-08-01), Bird
patent: 3771014 (1973-11-01), Paget
patent: 3873910 (1975-03-01), Willis
General Electric Company
Greenberg Sidney
LaRoche Eugene R.
LandOfFree
Discharge lamp operating 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 operating circuit, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Discharge lamp operating circuit will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-964246