FR1178044A - Interrupteur électrique à temps, notamment pour appareils photographiques - Google Patents

Interrupteur électrique à temps, notamment pour appareils photographiques

Info

Publication number
FR1178044A
FR1178044A FR1178044DA FR1178044A FR 1178044 A FR1178044 A FR 1178044A FR 1178044D A FR1178044D A FR 1178044DA FR 1178044 A FR1178044 A FR 1178044A
Authority
FR
France
Prior art keywords
cameras
time switch
switch
time
Prior art date
Legal status (The legal status 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 status listed.)
Expired
Application number
Other languages
English (en)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Agfa Gevaert NV
Original Assignee
Agfa Camera Werk AG
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 Agfa Camera Werk AG filed Critical Agfa Camera Werk AG
Application granted granted Critical
Publication of FR1178044A publication Critical patent/FR1178044A/fr
Expired legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03KPULSE TECHNIQUE
    • H03K17/00Electronic switching or gating, i.e. not by contact-making and –breaking
    • H03K17/28Modifications for introducing a time delay before switching
    • H03K17/288Modifications for introducing a time delay before switching in tube switches
    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03BAPPARATUS 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
    • G03B27/00Photographic printing apparatus
    • G03B27/72Controlling or varying light intensity, spectral composition, or exposure time in photographic printing apparatus
    • G03B27/80Controlling or varying light intensity, spectral composition, or exposure time in photographic printing apparatus in dependence upon automatic analysis of the original
    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03BAPPARATUS 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
    • G03B9/00Exposure-making shutters; Diaphragms
    • G03B9/58Means for varying duration of "open" period of shutter

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Control Or Security For Electrophotography (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)
FR1178044D 1956-06-30 1957-06-28 Interrupteur électrique à temps, notamment pour appareils photographiques Expired FR1178044A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEA25207A DE1017254B (de) 1956-06-30 1956-06-30 Elektrische Zeitschaltvorrichtung, insbesondere fuer fotografische Geraete

Publications (1)

Publication Number Publication Date
FR1178044A true FR1178044A (fr) 1959-05-04

Family

ID=6925855

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1178044D Expired FR1178044A (fr) 1956-06-30 1957-06-28 Interrupteur électrique à temps, notamment pour appareils photographiques

Country Status (4)

Country Link
US (1) US2935649A (fr)
CH (1) CH351014A (fr)
DE (1) DE1017254B (fr)
FR (1) FR1178044A (fr)

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2478907A (en) * 1935-07-29 1949-08-16 Harold E Edgerton Flash-producing device

Also Published As

Publication number Publication date
DE1017254B (de) 1957-10-10
CH351014A (de) 1960-12-31
US2935649A (en) 1960-05-03

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