System for energizing and dimming gas discharge lamps

Details System for energizing and dimming gas discharge lamps System for energizing and dimming gas discharge lamps

1978-12-05

1980-06-10

Smith, Alfred E.

Electric lamp and discharge devices: systems

With cathode or cathode heater supply circuit

Plural load device systems

315210, 315224, 315201, 315137, 315DIG4, H05B 4126, H05B 41392

Patent

active

042074983

ABSTRACT:
An illumination control system for gas discharge lamps which can be dimmed is provided in which a central inverter produces an output voltage at a high frequency which can be about 23 kHz. The amplitude of the inverter output is adjustable to dim the lamps. A transmission line consisting of spaced wires having respective thick insulation sheaths distributes the high frequency power to remotely located assemblies of ballasts and lamps. The ballasts consist of passive linear components. A high power factor rectifier network is disclosed for providing a d-c input to the inverter from the 50/60 Hz mains.

REFERENCES:
patent: 3422309 (1969-01-01), Spira et al.
patent: 3619716 (1971-11-01), Spira et al.
patent: 3731142 (1973-05-01), Spira et al.
patent: 3753071 (1973-08-01), Engel et al.
patent: 3824428 (1974-07-01), Spira et al.
patent: 3919592 (1975-11-01), Gray

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