Electric lighting systems

Details Electric lighting systems Electric lighting systems

1975-04-25

1977-01-18

Rolinec, R. V.

Electric lamp and discharge devices: systems

With cathode or cathode heater supply circuit

Pulsating or a.c. supply to the cathode or heater circuit

315278, 315DIG7, 331113A, H05B 4129

Patent

active

040041859

ABSTRACT:
A method and apparatus of lighting a cold cathode electric gas discharge lamp in which the lamp is connected across the secondary winding of a voltage step-up transformer, and the primary winding of the transformer is energized with a chopped D.C. voltage having a frequency of at least 12 kHz and a voltage which provides an output voltage from the secondary winding having an R.M.S. value no greater than 700 volts.

REFERENCES:
patent: 2895081 (1959-07-01), Crowhouer et al.
patent: 2982881 (1961-05-01), Reich
patent: 3501674 (1970-03-01), Moore

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