Fast warm up electronic ballast circuit for a high pressure disc

Details Fast warm up electronic ballast circuit for a high pressure disc Fast warm up electronic ballast circuit for a high pressure disc

1974-12-05

1976-01-06

Demeo, Palmer C.

Electric lamp and discharge devices: systems

Pulsating or a.c. supply

Discharge control discharge device load

315208, 315240, 315244, 315283, 315DIG7, H05B 4116

Patent

active

039315444

ABSTRACT:
An electronic ballast circuit for reducing the warm up time of high intensity discharge (HID) lamps wherein lamp current flow is abruptly reduced by a switching means responsive to load voltage variations upon attainment of power in an amount sufficient to activate the HID lamp.

REFERENCES:
patent: 3471747 (1969-10-01), Gershen
patent: 3486069 (1969-12-01), Mahler
patent: 3486070 (1969-12-01), Engel
patent: 3699385 (1972-10-01), Paget
patent: 3732460 (1973-05-01), Wattenbach

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