High intensity discharge lamp geometries

Details High intensity discharge lamp geometries High intensity discharge lamp geometries

1978-01-25

1979-12-25

Chatmon, Jr., Saxfield

Electric lamp and discharge devices: systems

Pulsating or a.c. supply

Induction-type discharge device load

313 17, 313 25, 315344, H05B 4116, H05B 4124

Patent

active

041807634

ABSTRACT:
Novel geometries for high intensity discharge solenoidal electric field lamps are disclosed providing good coupling between the magnetic fields within the ferrite and the plasma discharge. In addition, the geometries provide for good heat sinking and cooling capabilities as well as escape of most of the generated light. In accordance with one embodiment of the present invention, a plurality of toroidal shaped ferrite cores are arranged about the high intensity discharge tube, the tube being threaded through the holes in the toroidal ferrite cores. In accordance with another embodiment of the present invention, a bundle of ferrite rods is disposed through the hole of a toroidal shaped discharge tube, the packing density of the ferrite rods in the bundle being less than one hundred percent efficient whereby channels for cooling air are formed.

REFERENCES:
patent: 2961557 (1960-11-01), Hubert
patent: 3500118 (1970-03-01), Anderson
patent: 3987334 (1976-10-01), Anderson

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