H - Electricity – 01 – J
Patent
H - Electricity
01
J
H01J 65/00 (2006.01) H01J 65/04 (2006.01)
Patent
CA 2307419
An electrodeless fluorescent lamp operating at relatively low frequencies (50-500 kHz) whereby a ferrite core is utilized to generate the necessary magnetic and electric fields to maintain the discharge where the core material is Mn-Zn type combination due to its low power losses, 400 mW/cm3, in the frequency range of 50-100 kHz and magnetic field strengths of 150 mT. Furthermore, the material may cover a variety of atomic percentages of Mn and Zn added to Fe2O3 base to obtain favorable grain boundary and crystalline structure, resulting in a practical ferrite core material, having a Curie temperature greater than 200°C. Such material enables the operation of electrodeless fluorescent lamps with powers ranging from 10W to about 250W at low frequencies, as mentioned above, in such a manner that ferrite core losses constitute less than 20% of the lamp power and heat generated by core losses is minimized.
Chamberlain John C.
Chandler Robert
Kurachi Toshiaki
Popov Oleg
Shapiro Edward
Matsushita Electric Industrial Co. Ltd.
Osler Hoskin & Harcourt Llp
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