Method and circuitry for igniting fluorescent lamps at a predete

Details Method and circuitry for igniting fluorescent lamps at a predete Method and circuitry for igniting fluorescent lamps at a predete

1993-10-27

1995-10-03

Lee, Benny

Electric lamp and discharge devices: systems

With cathode or cathode heater supply circuit

Delayed application of the discharge potential

315105, 315307, H05B 3702

Patent

active

054554861

ABSTRACT:
Method and apparatus for igniting fluorescent lamps at a predetermined temperature of their cathodes. In the present invention, it is the resistance of the cold lamp cathodes that is always measured and ignition occurs as a result of the relationships or conditions of the cold resistance to the hot resistance or the voltage relationship of cold to hot, so that the absolute value has no influence and correct preheating is achieved with all types of lamps.

REFERENCES:
patent: 3720861 (1973-03-01), Kahanic
patent: 5175471 (1992-12-01), Stockinger et al.

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