Means for suppressing electromagnetic interference from RF-excit

Details Means for suppressing electromagnetic interference from RF-excit Means for suppressing electromagnetic interference from RF-excit

1995-09-26

1998-11-10

Pascal, Robert

Electric lamp and discharge devices: systems

Pulsating or a.c. supply

Induction-type discharge device load

315 85, 315344, 313607, H05B 3700

Patent

active

058349049

ABSTRACT:
EMI suppression in electrodeless discharge lamps by inward RF-reflectance from the enclosure walls (12) of 90%+ and use of an absorber (16) of RF power having an absorption coefficient greater than 40%, a transmission coefficient less than e.sup.-3, and an effective area facing the interior of the enclosure between 5% and 40% of the area of the RF-reflective light transmissive enclosure.

REFERENCES:
patent: 4568859 (1986-02-01), Houkes et al.
patent: 5387850 (1995-02-01), Bray et al.

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