CH351014A - Electric time switch devices, in particular for photographic equipment - Google Patents

Electric time switch devices, in particular for photographic equipment

Info

Publication number
CH351014A
CH351014A CH351014DA CH351014A CH 351014 A CH351014 A CH 351014A CH 351014D A CH351014D A CH 351014DA CH 351014 A CH351014 A CH 351014A
Authority
CH
Switzerland
Prior art keywords
time switch
switch devices
photographic equipment
electric time
electric
Prior art date
Application number
Other languages
German (de)
Inventor
Friedrich Dr Biedermann
Richard Dr Wick
Original Assignee
Agfa 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 Ag filed Critical Agfa Ag
Publication of CH351014A publication Critical patent/CH351014A/en

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
    • H03K17/28—Modifications for introducing a time delay before switching
    • H03K17/288—Modifications for introducing a time delay before switching in tube switches
    • 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
    • G03B27/00—Photographic printing apparatus
    • G03B27/72—Controlling or varying light intensity, spectral composition, or exposure time in photographic printing apparatus
    • G03B27/80—Controlling or varying light intensity, spectral composition, or exposure time in photographic printing apparatus in dependence upon automatic analysis of the original
    • 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
    • G03B9/00—Exposure-making shutters; Diaphragms
    • G03B9/58—Means 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)
CH351014D 1956-06-30 1957-06-26 Electric time switch devices, in particular for photographic equipment CH351014A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEA25207A DE1017254B (en) 1956-06-30 1956-06-30 Electrical timing devices, especially for photographic equipment

Publications (1)

Publication Number Publication Date
CH351014A true CH351014A (en) 1960-12-31

Family

ID=6925855

Family Applications (1)

Application Number Title Priority Date Filing Date
CH351014D CH351014A (en) 1956-06-30 1957-06-26 Electric time switch devices, in particular for photographic equipment

Country Status (4)

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

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
FR1178044A (en) 1959-05-04
DE1017254B (en) 1957-10-10
US2935649A (en) 1960-05-03

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