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Journal of the Society of Motion Picture Engineers ( Volume: 15, Issue: 5, November 1930)
[ACTIVE]

Operation of Projection Arcs from Motor Generator Sets

Metadata

Publisher
SMPTE — White Plains, NY, USA
Doc Type
Journal Article
Content Type
Original Research
Abbreviated Title
J SMPE
Volume
15, No. 5, pp. 702–709
Abstract
When series are generators were introduced and used successfully in theaters, the projection requirements were relatively simple. The projection room equipment usually consisted of two projectors with vertical carbon lamps with the addition in some instances of a spot lamp requiring the same amount of current as the projectors. Arc controls first introduced and used were mostly of the intermittent type using a voltage relay, the coil of which is connected across the arc, in connection with an operating motor. The operation of these lamps was successful with the series arc generators, and as no ballast resistance was used in the projection arc circuit a maximum converting efficiency from alternating current supply to direct current for the lamps was obtained.
Publication Date
1930-11-01
DOI
10.5594/J05613
ISSN
Print: 0097-5834
Link
https://doi.org/10.5594/J05613
Author(s)
C. C. Dash
Copyright
© 1930 Society of Motion Picture and Television Engineers, Inc.
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C. C. Dash; Operation of Projection Arcs from Motor Generator Sets, Journal of the Society of Motion Picture Engineers ( Volume: 15, Issue: 5, November 1930); SMPTE, 1930. Available at https://doi.org/10.5594/J05613
Snippet:
C. C. Dash; Operation of Projection Arcs from Motor Generator Sets, Journal of the Society of Motion Picture Engineers ( Volume: 15, Issue: 5, November 1930); SMPTE, 1930. Available at https://doi.org/10.5594/J05613

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C. C. Dash; Operation of Projection Arcs from Motor Generator Sets, Journal of the Society of Motion Picture Engineers ( Volume: 15, Issue: 5, November 1930); SMPTE, 1930. Available at https://doi.org/10.5594/J05613
Snippet:
<span class="citation">C. C. Dash; <cite>Operation of Projection Arcs from Motor Generator Sets</cite>, Journal of the Society of Motion Picture Engineers ( Volume: 15, Issue: 5, November 1930); SMPTE, 1930. Available at <a href="https://doi.org/10.5594/J05613" target="_blank" rel="noopener">https://doi.org/10.5594/J05613</a></span>

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Preview:
C. C. Dash; Operation of Projection Arcs from Motor Generator Sets, Journal of the Society of Motion Picture Engineers ( Volume: 15, Issue: 5, November 1930); SMPTE, 1930
doi: 10.5594/J05613
url: https://doi.org/10.5594/J05613
Snippet:
<li>
C. C. Dash; <cite id="bib-10-5594-j05613">Operation of Projection Arcs from Motor Generator Sets</cite>, Journal of the Society of Motion Picture Engineers ( Volume: 15, Issue: 5, November 1930); SMPTE, 1930
<span class="doi">10.5594/J05613</span>
</li>

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