Electric lamp and discharge devices: systems – Pulsating or a.c. supply – Induction-type discharge device load
Patent
1982-05-24
1984-05-29
LaRoche, Eugene R.
Electric lamp and discharge devices: systems
Pulsating or a.c. supply
Induction-type discharge device load
313550, 313556, 313607, 313634, 315267, H05B 4124
Patent
active
044517653
ABSTRACT:
A resonance lamp of improved efficiency and stability is provided, using radio frequency excitation applied axially of the lamp, which is matched to the radio frequency source by making it part of an initially high Q tuned circuit resonant at the source frequency. This resonance promotes starting of the lamp, while the damping applied by the lamp circuit during running provides stabilization. A feedback circuit sensing lamp current or light output from a rare gas filling of the lamp provides longer term stability. The lamp may include a heated side arm containing a source of molecular gas which can be excited to provide radiation from an atomic species of interest, and the heating of the side arm is controlled not only by feedback from a temperature sensor but also by feedback from an optical detector sensitive to the radiation of interest.
REFERENCES:
patent: 3851214 (1974-11-01), Young
patent: 4002922 (1977-01-01), Young
patent: 4013913 (1977-03-01), Driscoll et al.
patent: 4024431 (1977-05-01), Young
"Magnetic Field-Modulated, Ultraviolet-Resonance Absorption NO Analyser", (Kikuchi), Applied Optics, vol. 13, No. 2, Feb. 1974.
"A New Type of Hydrogen Discharge Tube", (Dieke & Cunningham), Journal of the Optical Society of America, vol. 42, No. 3, Mar. 1952.
"Experimental Evidence of the Photochemical Instability of a Pure CO.sub.2 Planetary Atmosphere", (Felder, Morrow and Young), Journal of Geophysical Research, Space Physics, vol. 75, No. 34, Dec. 1, 1970.
"Reactions of H*(2.sup.2 P-2.sup.2 S)+H.sub.2 and Their D-Isotopes: An Experimental Study", (Van Volkenburgh), Sep. 1973, pp. 233-238.
LaRoche Eugene R.
Moniteq Ltd.
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