IT941597B - Disposizione elettronica di comando preferibilmente per il diaframma degli apparecchi cinematografici - Google Patents

Disposizione elettronica di comando preferibilmente per il diaframma degli apparecchi cinematografici

Info

Publication number
IT941597B
IT941597B IT9797/71A IT979771A IT941597B IT 941597 B IT941597 B IT 941597B IT 9797/71 A IT9797/71 A IT 9797/71A IT 979771 A IT979771 A IT 979771A IT 941597 B IT941597 B IT 941597B
Authority
IT
Italy
Prior art keywords
diaphragm
electronic control
control arrangement
arrangement preferably
movie equipment
Prior art date
Application number
IT9797/71A
Other languages
English (en)
Inventor
H Cap
H Krammer
R Schiber
Original Assignee
Vockenhuber Karl
Hauser Raimund
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from AT1128670A external-priority patent/AT313062B/de
Priority claimed from AT1133770A external-priority patent/AT299706B/de
Priority claimed from AT1139770A external-priority patent/AT303895B/de
Application filed by Vockenhuber Karl, Hauser Raimund filed Critical Vockenhuber Karl
Application granted granted Critical
Publication of IT941597B publication Critical patent/IT941597B/it

Links

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B7/00—Control of exposure by setting shutters, diaphragms or filters, separately or conjointly
    • G03B7/08—Control effected solely on the basis of the response, to the intensity of the light received by the camera, of a built-in light-sensitive device
    • G03B7/081—Analogue circuits
    • G03B7/085—Analogue circuits for control of aperture

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Control Of Direct Current Motors (AREA)
IT9797/71A 1970-12-15 1971-12-14 Disposizione elettronica di comando preferibilmente per il diaframma degli apparecchi cinematografici IT941597B (it)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
AT1128670A AT313062B (de) 1970-12-15 1970-12-15 Schaltungsanordnung zum Steuern eines elektromotorischen Antriebes, besonders in Kameras
AT1133770A AT299706B (de) 1970-12-16 1970-12-16 Schaltungsanordnung zum Erkennen von Spannungsdifferenzen
AT1139770A AT303895B (de) 1970-12-17 1970-12-17 Schaltungsanordung zum Konstanthalten eines Stromes

Publications (1)

Publication Number Publication Date
IT941597B true IT941597B (it) 1973-03-10

Family

ID=27151208

Family Applications (1)

Application Number Title Priority Date Filing Date
IT9797/71A IT941597B (it) 1970-12-15 1971-12-14 Disposizione elettronica di comando preferibilmente per il diaframma degli apparecchi cinematografici

Country Status (2)

Country Link
US (1) US3806789A (it)
IT (1) IT941597B (it)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4070610A (en) * 1976-01-19 1978-01-24 Johnson Controls, Inc. Proportional motor circuit
KR840001387B1 (ko) * 1982-11-22 1984-09-21 정영춘 무정류자 모우터
US4692674A (en) * 1985-04-26 1987-09-08 The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration Brushless DC motor control system responsive to control signals generated by a computer or the like
US5272426A (en) * 1991-03-18 1993-12-21 James C. Cook Control loop for motorized shutter operation
DE102008047960A1 (de) 2008-09-18 2010-03-25 Endress + Hauser Conducta Gesellschaft für Mess- und Regeltechnik mbH + Co. KG Ringspule
DE102008048995A1 (de) 2008-09-25 2010-04-01 Endress + Hauser Conducta Gesellschaft für Mess- und Regeltechnik mbH + Co. KG Induktiver Leitfähigkeitssensor

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3378739A (en) * 1964-08-20 1968-04-16 Ling Temco Vought Inc Servo amplifier including filter means for reducing response time
US3422326A (en) * 1965-09-07 1969-01-14 Us Army Pulse width modulated servo amplifier
US3471759A (en) * 1966-12-23 1969-10-07 Gen Electric Pulse width modulation servo system including a unique transformerless demodulator
US3525029A (en) * 1967-01-03 1970-08-18 Gen Electric Pulse width modulation power switching servo amplifier and mechanism
DE1940998A1 (de) * 1968-08-21 1970-03-19 Asahi Optical Co Ltd Vorrichtung zur automatischen Blendensteuerung einer photographischen Kamera
US3523228A (en) * 1968-12-20 1970-08-04 Nasa Transistor servo system including a unique differential amplifier circuit
US3673512A (en) * 1970-09-22 1972-06-27 Allen Bradley Co Servo amplifier

Also Published As

Publication number Publication date
US3806789A (en) 1974-04-23

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