Circuits for operating electric discharge lamps

Details Circuits for operating electric discharge lamps Circuits for operating electric discharge lamps

1978-06-15

1980-07-01

LaRoche, Eugene R.

Electric lamp and discharge devices: systems

Surge generator or inductance in the supply circuit

Circuit interrupter in the inductance circuit

315240, 315244, 315DIG2, H05B 4116

Patent

active

042108500

ABSTRACT:
A circuit for operating an electric discharge lamp from an a.c. supply wherein a burst of high voltage pulses for starting the lamp is generated during each cycle or half cycle of the supply by rapidly turning on and off an electronic switch, e.g. a triac, connected between a tapping point on a ballast inductance and an input terminal of the circuit.

REFERENCES:
patent: 3679936 (1972-07-01), Moerkens
patent: 3917976 (1975-11-01), Nuckolls
patent: 3976910 (1976-08-01), Owens et al.
patent: 4015167 (1977-03-01), Samuels

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