AT303895B - Circuit arrangement for keeping a current constant - Google Patents

Circuit arrangement for keeping a current constant

Info

Publication number
AT303895B
AT303895B AT1139770A AT1139770A AT303895B AT 303895 B AT303895 B AT 303895B AT 1139770 A AT1139770 A AT 1139770A AT 1139770 A AT1139770 A AT 1139770A AT 303895 B AT303895 B AT 303895B
Authority
AT
Austria
Prior art keywords
keeping
circuit arrangement
current constant
constant
current
Prior art date
Application number
AT1139770A
Other languages
German (de)
Inventor
Robert Dr Phil Scheiber
Heinrich Ing Cap
Original Assignee
Eumig
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
Application filed by Eumig filed Critical Eumig
Priority to AT1139770A priority Critical patent/AT303895B/en
Priority to US00206466A priority patent/US3806789A/en
Priority to IT9797/71A priority patent/IT941597B/en
Application granted granted Critical
Publication of AT303895B publication Critical patent/AT303895B/en
Priority to US05/401,112 priority patent/US3935524A/en

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)
  • Amplifiers (AREA)
  • Control Of El Displays (AREA)

Description

  

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AT1139770A 1970-12-15 1970-12-17 Circuit arrangement for keeping a current constant AT303895B (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
AT1139770A AT303895B (en) 1970-12-17 1970-12-17 Circuit arrangement for keeping a current constant
US00206466A US3806789A (en) 1970-12-15 1971-12-09 Circuit arrangement for diaphragm control
IT9797/71A IT941597B (en) 1970-12-15 1971-12-14 ELECTRONIC CONTROL ARRANGEMENT PREFERABLY FOR THE DIAPHRAGM OF MOVIE EQUIPMENT
US05/401,112 US3935524A (en) 1970-12-15 1973-09-26 Circuit arrangement for detecting voltage differences

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT1139770A AT303895B (en) 1970-12-17 1970-12-17 Circuit arrangement for keeping a current constant

Publications (1)

Publication Number Publication Date
AT303895B true AT303895B (en) 1972-12-11

Family

ID=3628480

Family Applications (1)

Application Number Title Priority Date Filing Date
AT1139770A AT303895B (en) 1970-12-15 1970-12-17 Circuit arrangement for keeping a current constant

Country Status (1)

Country Link
AT (1) AT303895B (en)

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Legal Events

Date Code Title Description
ELJ Ceased due to non-payment of the annual fee