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Journal of the SMPTE ( Volume: 76, Issue: 10, October 1967)
[ACTIVE]

Electrical Design Concepts of Exposure Meters with Special Reference to the Ikophot T

Metadata

Publisher
SMPTE — White Plains, NY, USA
Doc Type
Journal Article
Content Type
Original Research
Volume
76, No. 10, pp. 1001–1004
Abstract
The Wheatstone Bridge principle can be effectively incorporated in the photo-electrically-actuated exposure controls of 8mm motion-picture cameras as well as in the circuitry of full-range CdS exposure meters. The basic electrical principles of photoelectric brightness measurement are surveyed. Methods of using a Wheat-stone Bridge to measure electrical resistance as a function of subject brightness are explored in terms of various balance indicators. The exact manner in which the Wheatstone Bridge principle has been applied to the circuitry and structure of the Ikophot T exposure meter is described.
Publication Date
1967-10-01
DOI
10.5594/J09088
ISSN
Print: 0361-4573
Link
https://doi.org/10.5594/J09088
Author(s)
Heinz H. ThieleElectronics Laboratory, Zeiss Ikon, A.G., 5 Dornhaldenstr., Stuttgart, Germany.
Copyright
© 1967 Society of Motion Picture and Television Engineers, Inc.
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Heinz H. Thiele; Electrical Design Concepts of Exposure Meters with Special Reference to the Ikophot T, Journal of the SMPTE ( Volume: 76, Issue: 10, October 1967); SMPTE, 1967. Available at https://doi.org/10.5594/J09088
Snippet:
Heinz H. Thiele; Electrical Design Concepts of Exposure Meters with Special Reference to the Ikophot T, Journal of the SMPTE ( Volume: 76, Issue: 10, October 1967); SMPTE, 1967. Available at https://doi.org/10.5594/J09088

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Preview:
Heinz H. Thiele; Electrical Design Concepts of Exposure Meters with Special Reference to the Ikophot T, Journal of the SMPTE ( Volume: 76, Issue: 10, October 1967); SMPTE, 1967. Available at https://doi.org/10.5594/J09088
Snippet:
<span class="citation">Heinz H. Thiele; <cite>Electrical Design Concepts of Exposure Meters with Special Reference to the Ikophot T</cite>, Journal of the SMPTE ( Volume: 76, Issue: 10, October 1967); SMPTE, 1967. Available at <a href="https://doi.org/10.5594/J09088" target="_blank" rel="noopener">https://doi.org/10.5594/J09088</a></span>

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Preview:
Heinz H. Thiele; Electrical Design Concepts of Exposure Meters with Special Reference to the Ikophot T, Journal of the SMPTE ( Volume: 76, Issue: 10, October 1967); SMPTE, 1967
doi: 10.5594/J09088
url: https://doi.org/10.5594/J09088
Snippet:
<li>
Heinz H. Thiele; <cite id="bib-10-5594-j09088">Electrical Design Concepts of Exposure Meters with Special Reference to the Ikophot T</cite>, Journal of the SMPTE ( Volume: 76, Issue: 10, October 1967); SMPTE, 1967
<span class="doi">10.5594/J09088</span>
</li>

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