Discharge lamp lighting device

Details Discharge lamp lighting device Discharge lamp lighting device

1982-04-14

1984-05-08

LaRoche, Eugene R.

Electric lamp and discharge devices: systems

Discharge device and/or rectifier in the supply circuit

Discharge device and/or rectifier in shunt to the load device

315101, 315290, 315DIG2, H05B 4116

Patent

active

044477635

ABSTRACT:
A discharge lamp lighting device comprises a serial connection of an inductive ballast and a discharge lamp connected across an A.C. power source, and a switching circuit connected substantially in parallel to the discharge lamp and operable to carry out two consecutive ON/OFF operations in the beginning of each half cycle of the A.C. power source while the discharge lamp is in its lit condition. The switching circuit preferably comprises a full-wave rectifier connected substantially in parallel to the discharge lamp, a switching element connected between the output terminals of the rectifier, and a control circuit for controlling the ON/OFF operation of the switching element.

REFERENCES:
patent: 3626243 (1971-12-01), Koyama et al.
patent: 4066932 (1978-01-01), Rottier
patent: 4210850 (1980-07-01), Britton
patent: 4306177 (1981-12-01), Kaneda

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