Paper A–2: The Control of High Power Xenon Flashes by Magnetic Switching

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Publisher: SMPTE — White Plains, NY, USA
Doc Type: Journal Article
Content Type: Original Research
Abbreviated Title: J SMPTE
Volume: 71, No. 1A, pp. 6–10
Abstract: The xenon-arc discharge is very susceptible to a magnetic field and the arc can be deflected to extinction. In this way a lamp can fulfill a dual purpose, by emitting light radiation while functioning as its own circuit breaker. Investigations have centered around a 2-kw design of a compact-source xenon lamp with increasing gas pressures and with lamp currents of up to 1000 amp. By the use of a magnetic field to extinguish the arc and thereby break the lamp current, substantially square-wave pulses of light are obtained in the region of 10 to 700 msec. With these high lamp currents the lead-acid battery provides a satisfactory source of power and with light flashes of up to 50 kw the arc characteristics and the light output efficiency have been studied. Comparisons are also made with earlier discharge lamp designs which are of particular interest for high-speed photography. Magnetic arc switching is already being used successfully as a means of providing an occulting light in the Dungeness Lighthouse. Higher flash powers are switched with shorter durations enabling higher-speed camera operation and entering a field where rotating mirror cameras demand still higher light intensities.
Publication Date: 1962-01-01
DOI: 10.5594/J18057
ISSN: Print: 0361-4573
Link: https://doi.org/10.5594/J18057
Author(s): E. J. G. BeesonElectrical Industries Lamp and Lighting Co. Ltd., Melton Rd., Leicester, England
Copyright: © 1962 Society of Motion Picture and Television Engineers, Inc.

Bibliographic Reference(s)

The Cine Flash: A New Lighting Equipment for High-Speed Cinephotography and Studio Effects [Active]
1. Thackery D. P. C. , “Control of the actinic emission of electric discharges,” Proc. 3rd International Congress of High-Speed Photography, Butterworths Scientific Pub., Ltd. , 88 Kingsway, London W. C. 2 ; in U.S. by Academic Press Inc., 111 Fifth Ave., New York 3, 1956 , pp. 21 – 29 . EXTERNAL
2. Beeson E. J. G. , “Prolonged flashes in xenon,” B. T. H. Activities , 27 : 131 – 136 , No. 4, July/Aug. 1956 . EXTERNAL
3. Beeson E. J. G. , “A high intensity light source for high speed kine-photography,” The Photographic Jour. , 89B : 62 – 67 , May/June 1949 . EXTERNAL
5. Beeson E. J. G. Bocock W. A. Castellain A. P. Tuck F. A. , “The xenon lamp for film projection,” British Kinematography , 32 : 59 – 74 , No. 3, March 1958 . EXTERNAL
6. (Patents Pending). EXTERNAL
7. Beeson E. J. G. , Report submitted to 6th International Technical Conference on Lighthouses and Other Aids to Navigation, held in Washington, D.C., Sept. 26–30, 1960 . EXTERNAL

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E. J. G. Beeson; Paper A–2: The Control of High Power Xenon Flashes by Magnetic Switching, Journal of the SMPTE ( Volume: 71, Issue: 1A, 1962); SMPTE, 1962. Available at https://doi.org/10.5594/J18057

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E. J. G. Beeson; Paper A–2: The Control of High Power Xenon Flashes by Magnetic Switching, Journal of the SMPTE ( Volume: 71, Issue: 1A, 1962); SMPTE, 1962. Available at https://doi.org/10.5594/J18057

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<span class="citation">E. J. G. Beeson; <cite>Paper A–2: The Control of High Power Xenon Flashes by Magnetic Switching</cite>, Journal of the SMPTE ( Volume: 71, Issue: 1A, 1962); SMPTE, 1962. Available at <a href="https://doi.org/10.5594/J18057" target="_blank" rel="noopener">https://doi.org/10.5594/J18057</a></span>

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E. J. G. Beeson; Paper A–2: The Control of High Power Xenon Flashes by Magnetic Switching, Journal of the SMPTE ( Volume: 71, Issue: 1A, 1962); SMPTE, 1962
doi: 10.5594/J18057
url: https://doi.org/10.5594/J18057

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<li>
E. J. G. Beeson; <cite id="bib-10-5594-j18057">Paper A–2: The Control of High Power Xenon Flashes by Magnetic Switching</cite>, Journal of the SMPTE ( Volume: 71, Issue: 1A, 1962); SMPTE, 1962
<span class="doi">10.5594/J18057</span>
</li>