Energizing circuits for fluorescent lamps

Details Energizing circuits for fluorescent lamps Energizing circuits for fluorescent lamps

1976-03-26

1978-01-03

Chatmon, Jr., Saxfield

Electric lamp and discharge devices: systems

Periodic switch in the supply circuit

Silicon controlled rectifier ignition

315DIG2, 315DIG5, 315206, 315254, 315276, H05B 4129, H05B 3700

Patent

active

040669300

ABSTRACT:
Apparatus is disclosed which may be utilized as an energizing circuit for the ignition of fluorescent lamps and other gas discharge luminescent devices. The circuit directs energizing signals to gaseous discharge tubes at a voltage sufficient to intitiate ionization of the gases therein. The signals are characterized by having a predetermined frequency in the range from about 20 kilohertz to 10 megahertz. Thereafter, the circuit lowers the voltage and current of the signal delivered to the tubes to a level sufficient to maintain gas ionization. Significant power savings are realized over conventional ballast circuits with the apparatus of the present invention.

REFERENCES:
patent: 3611021 (1971-10-01), Wallace
patent: 3766467 (1973-10-01), Reising, Jr.
patent: 3769545 (1973-10-01), Crane
patent: 3889153 (1975-06-01), Pierce
patent: 3922582 (1975-11-01), Pitel

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