Apparatus for operating a gaseous discharge lamp

Details Apparatus for operating a gaseous discharge lamp Apparatus for operating a gaseous discharge lamp

1980-09-24

1983-07-05

La Roche, Eugene

Electric lamp and discharge devices: systems

Plural power supplies

Plural diverse pulsating or a.c. supplies

315105, 315173, 315171, 315176, 315199, 315205, 315224, 315291, 315DIG4, H05B 4129, H05B 4136

Patent

active

043920861

ABSTRACT:
An apparatus for a gaseous discharge lamp includes a power controlling device for converting an AC voltage into a phase control output, a high frequency generating device for converting the output of the high frequency generating device into an high frequency output and a discharge lamp which is lighted by the output of the high frequency generating device and whose filament is heated. The high frequency generating device includes a DC power source for supplying a DC voltage to the power controlling device whenever the power controlling device remains to generate the phase control output. The output of the DC power source heats the filament of the discharge lamp for a period during which no phase control output is produced.

REFERENCES:
patent: 3969652 (1976-07-01), Herzog
patent: 4017785 (1977-04-01), Perper
patent: 4109307 (1978-08-01), Knoll

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