CH334802A - Electric time switch devices, in particular for photographic equipment - Google Patents

Electric time switch devices, in particular for photographic equipment

Info

Publication number
CH334802A
CH334802A CH334802DA CH334802A CH 334802 A CH334802 A CH 334802A CH 334802D A CH334802D A CH 334802DA CH 334802 A CH334802 A CH 334802A
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 CH334802A publication Critical patent/CH334802A/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
    • G03B27/02—Exposure apparatus for contact printing
    • G03B27/04—Copying apparatus without a relative movement between the original and the light source during exposure, e.g. printing frame or printing box
    • G03B27/08—Copying apparatus without a relative movement between the original and the light source during exposure, e.g. printing frame or printing box for automatic copying of several originals one after the other, e.g. for copying cinematograph film

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Stroboscope Apparatuses (AREA)
CH334802D 1956-05-19 1957-05-10 Electric time switch devices, in particular for photographic equipment CH334802A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE334802X 1956-05-19

Publications (1)

Publication Number Publication Date
CH334802A true CH334802A (en) 1958-12-15

Family

ID=6218620

Family Applications (1)

Application Number Title Priority Date Filing Date
CH334802D CH334802A (en) 1956-05-19 1957-05-10 Electric time switch devices, in particular for photographic equipment

Country Status (4)

Country Link
US (1) US2835849A (en)
CH (1) CH334802A (en)
DE (1) DE1048627B (en)
FR (1) FR1175085A (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1049913B (en) * 1956-07-11 1959-02-05 N. V. Philips' Gloeilampenfabrieken, Eindhoven (Niederlande) Adjustable electronic timer with a controllable high vacuum tube, a relay connected to the anode circuit of this tube and a capacitor that can be charged via a resistor
US2952800A (en) * 1957-11-07 1960-09-13 Howard D Gulnac Time delay device
US3109965A (en) * 1959-11-24 1963-11-05 Cons Electronics Ind Timing circuit
DE1199854B (en) * 1960-05-19 1965-09-02 Robert Bosch Elektronik Ges Mi Electronic switching device
US3106668A (en) * 1960-06-29 1963-10-08 Du Pont Timing circuit
US3144591A (en) * 1962-05-11 1964-08-11 Hughes Aircraft Co Time delay relay

Also Published As

Publication number Publication date
DE1048627B (en)
US2835849A (en) 1958-05-20
FR1175085A (en) 1959-03-19

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