Constant power lamp ballast

Details Constant power lamp ballast Constant power lamp ballast

1975-12-10

1976-10-19

La Roche, Eugene

Electric lamp and discharge devices: systems

Pulsating or a.c. supply

Transformer in the supply circuit

315239, 315282, 336165, H05B 4116

Patent

active

039873390

ABSTRACT:
A ballast circuit for providing constant power to a high intensity discharge lamp, the ballast including a transformer having two cores separated by a gap, one core being at least partially closed and the other, having an air gap. A primary coil winds around a portion of each core and secondary coils wind around another portion of each core. The secondary coils and a capacitor are in series with the lamp to regulate the current and voltage applied to the lamp.

REFERENCES:
patent: 2462371 (1949-02-01), Engle
patent: 2821661 (1958-01-01), Bastian
patent: 2880374 (1959-03-01), Mulder
patent: 3022458 (1962-02-01), Sola
patent: 3684921 (1972-08-01), DeLeon

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