Starting aid for an electrodeless high intensity discharge lamp

Details Starting aid for an electrodeless high intensity discharge lamp Starting aid for an electrodeless high intensity discharge lamp

1989-10-05

1991-01-01

LaRoche, Eugene R.

Electric lamp and discharge devices: systems

Pulsating or a.c. supply

Induction-type discharge device load

31511151, 315 39, 313151, H05B 4124

Patent

active

049821407

ABSTRACT:
A starting aid for an electrodeless high intensity discharge lamp comprises a first conductive coil disposed about a second conductive coil, the coils each having a truncated-cone shape. The coils are wound in opposite directions so that voltages induced therein add together to provide a sufficiently high electric field gradient to initiate a plasma discharge in the arc tube. The coils are movable between a starting position adjacent to the arc tube and a lamp-operating position at a predetermined location away from the arc tube.

REFERENCES:
patent: 4298828 (1981-11-01), Justice
patent: 4812702 (1989-03-01), Anderson
patent: 4890042 (1989-12-01), Witting
patent: 4894589 (1990-01-01), Witting
patent: 4894590 (1990-01-01), Witting
patent: 4894591 (1990-01-01), Witting
patent: 4902937 (1990-02-01), Witting

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