Electric lamp and discharge devices: systems – Combined load device or load device temperature modifying... – Discharge device load
Patent
1982-06-24
1985-01-01
Dixon, Harold
Electric lamp and discharge devices: systems
Combined load device or load device temperature modifying...
Discharge device load
315 59, 315 61, 315236, 315352, H01J 744
Patent
active
044917660
ABSTRACT:
A high intensity discharge lamp, for example a high pressure sodium or sodium halide lamp, which utilizes a refractory metal spiral with positive electric potential applied to it positioned around the arc tube to aid in starting and inhibit sodium migration through the arc tube during operation.
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Dixon Harold
North American Philips Lighting Corporation
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