GB1230831A - - Google Patents

Info

Publication number
GB1230831A
GB1230831A GB1230831DA GB1230831A GB 1230831 A GB1230831 A GB 1230831A GB 1230831D A GB1230831D A GB 1230831DA GB 1230831 A GB1230831 A GB 1230831A
Authority
GB
United Kingdom
Prior art keywords
voltage
circuit
sample
capacitor
transistor
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)
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 filed Critical
Publication of GB1230831A publication Critical patent/GB1230831A/en
Expired legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01JMEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J1/00Photometry, e.g. photographic exposure meter
    • G01J1/10Photometry, e.g. photographic exposure meter by comparison with reference light or electric value provisionally void
    • G01J1/16Photometry, e.g. photographic exposure meter by comparison with reference light or electric value provisionally void using electric radiation detectors
    • G01J1/18Photometry, e.g. photographic exposure meter by comparison with reference light or electric value provisionally void using electric radiation detectors using comparison with a reference electric value
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01JMEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J1/00Photometry, e.g. photographic exposure meter
    • G01J1/10Photometry, e.g. photographic exposure meter by comparison with reference light or electric value provisionally void
    • G01J1/16Photometry, e.g. photographic exposure meter by comparison with reference light or electric value provisionally void using electric radiation detectors

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)
  • Investigating Or Analysing Biological Materials (AREA)
GB1230831D 1967-04-17 1968-04-17 Expired GB1230831A (ru)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US63143067A 1967-04-17 1967-04-17
US71395868A 1968-03-18 1968-03-18

Publications (1)

Publication Number Publication Date
GB1230831A true GB1230831A (ru) 1971-05-05

Family

ID=27091390

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1230831D Expired GB1230831A (ru) 1967-04-17 1968-04-17

Country Status (7)

Country Link
JP (1) JPS5125758B1 (ru)
CH (1) CH516796A (ru)
DE (1) DE1773227C3 (ru)
FR (1) FR1572377A (ru)
GB (1) GB1230831A (ru)
NL (1) NL6805385A (ru)
SE (2) SE384581B (ru)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1559810A (en) * 1975-11-05 1980-01-30 Nat Res Dev Device for measuring light received from an illuminated material
US4125329A (en) * 1976-09-07 1978-11-14 Sterndent Corporation Tristimulus colorimeter

Also Published As

Publication number Publication date
NL6805385A (ru) 1968-10-18
DE1773227A1 (de) 1972-02-24
SE7512742L (sv) 1975-11-13
CH516796A (fr) 1971-12-15
DE1773227C3 (de) 1978-04-06
JPS5125758B1 (ru) 1976-08-02
FR1572377A (ru) 1969-06-27
SE384581B (sv) 1976-05-10
DE1773227B2 (de) 1974-08-22

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee