Emergency/normal lighting circuit for a gaseous discharge lamp

Details Emergency/normal lighting circuit for a gaseous discharge lamp Emergency/normal lighting circuit for a gaseous discharge lamp

1977-04-28

1978-09-26

LaRoche, Eugene R.

Electric lamp and discharge devices: systems

Automatic substitution of the power supply

307 66, 315156, 315DIG7, H05B 4114

Patent

active

041173732

ABSTRACT:
A circuit is provided including a reactor for operating a fluorescent lamp from AC line voltage and including a high frequency inverter for operating the lamp from a battery upon failure of line voltage. The inverter also serves to start the lamp during normal conditions, that is, when AC line voltage of sufficient value is available to the lamp.

REFERENCES:
patent: 3657597 (1972-04-01), Moerkens et al.
patent: 3890534 (1975-06-01), Horowitz
patent: 4008414 (1977-02-01), Agnew

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