Energizing arrangement for a discharge lamp

Details Energizing arrangement for a discharge lamp Energizing arrangement for a discharge lamp

1988-04-28

1990-06-26

LaRoche, Eugene R.

Electric lamp and discharge devices: systems

Current and/or voltage regulation

Automatic regulation

315205, 315207, 315224, 315DIG7, H05B 41392

Patent

active

049375059

ABSTRACT:
The discharge lamp energizing arrangement of this invention comprises a starter and a generator adapted to maintain a discharge current in the lamp. The generator includes a first circuit arranged to couple in series a D.C. voltage source, a first switch and a second switch. When the first switch is closed the second is open and vice versa. A second circuit arranged to couple an inductance and the lamp in series is connected in parallel with the second switch. The switches are operated by a control means which combines signals received from an oscillator and a comparator so as to regulate the current flow in the lamp. The generator appears as a source of stabilized current for any load which is applied thereto and may just as well be employed for a lighting fixture as for energizing the luminous points of a matrix display board.

REFERENCES:
patent: 3890537 (1975-06-01), Park et al.
patent: 4649322 (1987-03-01), Tellan et al.
patent: 4766350 (1988-08-01), Husgen et al.
patent: 4777409 (1988-10-01), Tracy et al.

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