GB1099796A - Electronic timing devices - Google Patents

Electronic timing devices

Info

Publication number
GB1099796A
GB1099796A GB4095065A GB4095065A GB1099796A GB 1099796 A GB1099796 A GB 1099796A GB 4095065 A GB4095065 A GB 4095065A GB 4095065 A GB4095065 A GB 4095065A GB 1099796 A GB1099796 A GB 1099796A
Authority
GB
United Kingdom
Prior art keywords
relay
exposure
potential
photo
capacitor
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
GB4095065A
Other languages
English (en)
Inventor
Denis Manktelow Neale
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.)
Ilford Imaging UK Ltd
Original Assignee
Ilford Ltd
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 Ilford Ltd filed Critical Ilford Ltd
Priority to GB4095065A priority Critical patent/GB1099796A/en
Priority to BE687453D priority patent/BE687453A/xx
Publication of GB1099796A publication Critical patent/GB1099796A/en
Expired legal-status Critical Current

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
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J1/00—Photometry, e.g. photographic exposure meter
    • G01J1/42—Photometry, e.g. photographic exposure meter using electric radiation detectors
    • G01J1/44—Electric circuits
    • G01J1/46—Electric circuits using a capacitor
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Projection-Type Copiers In General (AREA)
  • Control Of Exposure In Printing And Copying (AREA)
GB4095065A 1965-09-27 1965-09-27 Electronic timing devices Expired GB1099796A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB4095065A GB1099796A (en) 1965-09-27 1965-09-27 Electronic timing devices
BE687453D BE687453A (enrdf_load_stackoverflow) 1965-09-27 1966-09-27

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4095065A GB1099796A (en) 1965-09-27 1965-09-27 Electronic timing devices

Publications (1)

Publication Number Publication Date
GB1099796A true GB1099796A (en) 1968-01-17

Family

ID=10417403

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4095065A Expired GB1099796A (en) 1965-09-27 1965-09-27 Electronic timing devices

Country Status (2)

Country Link
BE (1) BE687453A (enrdf_load_stackoverflow)
GB (1) GB1099796A (enrdf_load_stackoverflow)

Also Published As

Publication number Publication date
BE687453A (enrdf_load_stackoverflow) 1967-03-01

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