NL215236A - - Google Patents

Info

Publication number
NL215236A
NL215236A NL215236DA NL215236A NL 215236 A NL215236 A NL 215236A NL 215236D A NL215236D A NL 215236DA NL 215236 A NL215236 A NL 215236A
Authority
NL
Netherlands
Application number
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.)
Publication of NL215236A publication Critical patent/NL215236A/xx

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G1/00—Details of arrangements for controlling amplification
    • H03G1/02—Remote control of amplification, tone or bandwidth
    • 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
    • G01J1/10—Photometry, e.g. photographic exposure meter by comparison with reference light or electric value provisionally void
    • G01J1/16—Photometry, e.g. photographic exposure meter by comparison with reference light or electric value provisionally void using electric radiation detectors
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G1/00—Details of arrangements for controlling amplification
    • H03G1/0005—Circuits characterised by the type of controlling devices operated by a controlling current or voltage signal
    • H03G1/0035—Circuits characterised by the type of controlling devices operated by a controlling current or voltage signal using continuously variable impedance elements
    • H03G1/0047—Circuits characterised by the type of controlling devices operated by a controlling current or voltage signal using continuously variable impedance elements using photo-electric elements
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G9/00—Combinations of two or more types of control, e.g. gain control and tone control
    • H03G9/02—Combinations of two or more types of control, e.g. gain control and tone control in untuned amplifiers
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
    • H03J1/00—Details of adjusting, driving, indicating, or mechanical control arrangements for resonant circuits in general
    • H03J1/02—Indicating arrangements
    • H03J1/04—Indicating arrangements with optical indicating means

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Circuit Arrangement For Electric Light Sources In General (AREA)
  • Adjustable Resistors (AREA)
  • Mechanical Light Control Or Optical Switches (AREA)
  • Photometry And Measurement Of Optical Pulse Characteristics (AREA)
NL215236D 1957-03-09 NL215236A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL879949X 1957-03-09

Publications (1)

Publication Number Publication Date
NL215236A true NL215236A (en)

Family

ID=19851536

Family Applications (1)

Application Number Title Priority Date Filing Date
NL215236D NL215236A (en) 1957-03-09

Country Status (9)

Country Link
US (1) US3102227A (en)
JP (1) JPS3816933B1 (en)
BE (1) BE565502A (en)
CA (1) CA626847A (en)
DE (1) DE1093883B (en)
FR (1) FR1201512A (en)
GB (1) GB879949A (en)
IT (1) IT585477A (en)
NL (1) NL215236A (en)

Families Citing this family (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3258601A (en) * 1966-06-28 Photosensitive variable resistance device
DE1201398B (en) * 1959-11-27 1965-09-23 Nordmende Device for the combined, independent, room-light-dependent and remote-controlled setting of the contrast and / or the brightness of the image on a television receiver
GB914860A (en) * 1960-02-26 1963-01-09 Ass Elect Ind Improvements relating to variable electrical impedances
US3192387A (en) * 1961-03-22 1965-06-29 Robert M Goodman Electro-optical device for producing a modulated voltage
DE1272341B (en) * 1961-04-24 1968-07-11 Philips Patentverwaltung Device and circuit arrangement with a light-dependent controlled voltage divider carrying an alternating current signal in televisions and other systems that work with image signals
DE1254179B (en) * 1961-04-24 1967-11-16 Philips Patentverwaltung Circuit arrangement for controlling an AC voltage divider by light
US3235741A (en) * 1961-04-24 1966-02-15 Invac Corp Switch
US3289002A (en) * 1961-04-25 1966-11-29 Robert M Goodman Electro-optical switching device using two photosensitive cells within an opaque housing
DE1175278B (en) * 1961-05-26 1964-08-06 Fernseh Gmbh Arrangement for changing the amplification of an amplifier stage
US3171034A (en) * 1961-12-21 1965-02-23 Tomasulo Walter Electro-optical control
US3202905A (en) * 1962-01-02 1965-08-24 Straza Ind Remotely controlled attenuator devices
US3168619A (en) * 1962-07-13 1965-02-02 Bankers Trust Co Two-way audio communication
US3389266A (en) * 1963-01-26 1968-06-18 Kabushika Kaisha Daikin Seisak Apparatus for measuring minute velocity fluctuations
US3283157A (en) * 1963-05-07 1966-11-01 Instrumentation Labor Inc Photomodulator for use with high gain d.c. amplifier
US3308303A (en) * 1963-06-28 1967-03-07 Brunswick Corp Transducer system employing electro-optical means
US3365662A (en) * 1963-07-18 1968-01-23 Trw Inc Ohmmeter having a constant current source including photovoltaic cell
US3409378A (en) * 1963-12-28 1968-11-05 Nippon Kogaku Kk Multi-element exposure meter
US3521962A (en) * 1964-06-19 1970-07-28 Stanley Electric Co Ltd Light responsive and measuring device
US3684374A (en) * 1970-07-29 1972-08-15 Humphrey Res Ass Focus detector
JPS4967929U (en) * 1972-09-26 1974-06-13
JPS59112233A (en) * 1982-11-26 1984-06-28 ナショナル・リサ−チ・ディベロプメント・コ−ポレ−ション Measuring device for characteristics of optical beam
GB2131227B (en) * 1982-11-26 1987-01-07 Walter Margulis Apparatus for measuring light beam characteristics
US4573110A (en) * 1984-09-28 1986-02-25 Wang Laboratories, Inc. Control device
DE19944025A1 (en) * 1999-09-14 2001-03-15 Siemens Ag Bipole-type variable resistance

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE155043C (en) *
US1602070A (en) * 1923-02-12 1926-10-05 Dragonetti Giovanni Selenium cell without inertia
DE555832C (en) * 1931-01-14 1932-07-28 Josef Heitz Massless control of a step resistance
DE700878C (en) * 1938-04-09 1941-01-02 Aeg Variable electrical resistance
US2736848A (en) * 1949-03-03 1956-02-28 Rca Corp Photocells
DE820015C (en) * 1949-09-10 1951-11-08 Siemens & Halske A G Amplifier
US2749501A (en) * 1950-10-06 1956-06-05 California Packing Corp Photoelectric voltage regulator
US2706792A (en) * 1951-05-25 1955-04-19 Gen Electric X-ray detection
US2961542A (en) * 1956-11-02 1960-11-22 Philco Corp Radiation-detecting device and system

Also Published As

Publication number Publication date
GB879949A (en) 1961-10-11
BE565502A (en)
US3102227A (en) 1963-08-27
IT585477A (en)
DE1093883B (en) 1960-12-01
FR1201512A (en) 1959-12-30
JPS3816933B1 (en) 1963-09-04
CA626847A (en) 1961-09-05

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