[go: up one dir, main page]

FR1201512A - Device for obtaining an adjustable partial voltage from the voltage of an electrical signal - Google Patents

Device for obtaining an adjustable partial voltage from the voltage of an electrical signal

Info

Publication number
FR1201512A
FR1201512A FR1201512DA FR1201512A FR 1201512 A FR1201512 A FR 1201512A FR 1201512D A FR1201512D A FR 1201512DA FR 1201512 A FR1201512 A FR 1201512A
Authority
FR
France
Prior art keywords
voltage
obtaining
electrical signal
adjustable partial
partial voltage
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
French (fr)
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.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
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 Philips Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Application granted granted Critical
Publication of FR1201512A publication Critical patent/FR1201512A/en
Expired legal-status Critical Current

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)
  • Photometry And Measurement Of Optical Pulse Characteristics (AREA)
  • Adjustable Resistors (AREA)
  • Mechanical Light Control Or Optical Switches (AREA)
FR1201512D 1957-03-09 1958-03-07 Device for obtaining an adjustable partial voltage from the voltage of an electrical signal Expired FR1201512A (en)

Applications Claiming Priority (1)

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

Publications (1)

Publication Number Publication Date
FR1201512A true FR1201512A (en) 1959-12-30

Family

ID=19851536

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1201512D Expired FR1201512A (en) 1957-03-09 1958-03-07 Device for obtaining an adjustable partial voltage from the voltage of an electrical signal

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)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1175278B (en) * 1961-05-26 1964-08-06 Fernseh Gmbh Arrangement for changing the amplification of an amplifier stage
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
DE1254179B (en) * 1961-04-24 1967-11-16 Philips Patentverwaltung Circuit arrangement for controlling an AC voltage divider by light
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

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3258601A (en) * 1966-06-28 Photosensitive variable resistance device
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
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
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
GB2131227B (en) * 1982-11-26 1987-01-07 Walter Margulis Apparatus for measuring light beam characteristics
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
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

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
DE1254179B (en) * 1961-04-24 1967-11-16 Philips Patentverwaltung Circuit arrangement for controlling an AC voltage divider by light
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
DE1175278B (en) * 1961-05-26 1964-08-06 Fernseh Gmbh Arrangement for changing the amplification of an amplifier stage

Also Published As

Publication number Publication date
GB879949A (en) 1961-10-11
NL215236A (en)
CA626847A (en) 1961-09-05
BE565502A (en)
DE1093883B (en) 1960-12-01
IT585477A (en)
US3102227A (en) 1963-08-27
JPS3816933B1 (en) 1963-09-04

Similar Documents

Publication Publication Date Title
FR1201512A (en) Device for obtaining an adjustable partial voltage from the voltage of an electrical signal
FR1149755A (en) Device for increasing the sensitivity of indications provided by hall voltage generators
FR1229572A (en) Device for logarithmic conversion of an electrical signal
FR1094358A (en) Semiconductor element direct current amplifier
FR1161842A (en) Device for the detection of mechanical tensions
FR1197579A (en) Fixing device for electrical equipment
CH271978A (en) Device for measuring the duration of an electrical signal.
CH354810A (en) Device for discrimination of the individual electrical state of lines
FR1279001A (en) Device for providing constant current intensities, in particular for purposes of calibrating measuring devices
FR1132920A (en) Device for producing an adjustment voltage
FR1153783A (en) Device for adjusting the capacitance of an electrically insulated conductor
FR1181333A (en) Device allowing to detect if a point of an electrical installation is under tension, and to check the phase concordance between the voltages at two points of the said installation
FR1109163A (en) Device allowing the variation of the voltage applied to an electric circuit
FR1259724A (en) Transistor networks for the detection of electrical signal levels
FR1182433A (en) Device for milling the surface of an insulated conductor
CH344452A (en) Device controlling the transmission of an alternating current from one point to another
CH455933A (en) Device for measuring the frequency of an electrical signal
FR1236203A (en) Switch-switch device for high voltage electrical equipment
FR1381994A (en) Electrical circuit device for regulating the level of a signal
FR1184157A (en) Voltage adaptation device for electrical equipment
FR1222168A (en) Interlocking electrical connection device
FR1273314A (en) Device for regulating the output voltage of an electric generator
FR1149397A (en) Device for brazing an electrical conductor
FR1115045A (en) Device for measuring the current gain of junction transistrons
FR1115141A (en) Apparatus for isolating an adjustable fraction of a periodic current