SEF Lamp dimming

Details SEF Lamp dimming SEF Lamp dimming

1979-03-22

1980-08-26

Smith, Alfred E.

Electric lamp and discharge devices: systems

Pulsating or a.c. supply

Induction-type discharge device load

315 57, 315DIG4, H05B 41392

Patent

active

042197600

ABSTRACT:
Solenoidal electric field lamps are effectively dimmed with no loss in lamp efficiency by powering the lamps with high frequency current pulses and periodically interrupting the current pulses in a time ratio fashion in order to reduce the average power being supplied to the lamp. The lamp may be dimmed from 100 to 0 percent of full power in an efficient manner as long as the pulse interruption period is less than the plasma deionization time of the lamp.

REFERENCES:
patent: 4117378 (1978-09-01), Glascock
patent: 4128785 (1978-12-01), Ferro et al.

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