FR2002038A1 - - Google Patents

Info

Publication number
FR2002038A1
FR2002038A1 FR6903605A FR6903605A FR2002038A1 FR 2002038 A1 FR2002038 A1 FR 2002038A1 FR 6903605 A FR6903605 A FR 6903605A FR 6903605 A FR6903605 A FR 6903605A FR 2002038 A1 FR2002038 A1 FR 2002038A1
Authority
FR
France
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.)
Withdrawn
Application number
FR6903605A
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.)
Pfizer Health AB
Original Assignee
LKB Produkter AB
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 LKB Produkter AB filed Critical LKB Produkter AB
Publication of FR2002038A1 publication Critical patent/FR2002038A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G3/00—Gain control in amplifiers or frequency changers without distortion of the input signal
    • H03G3/20—Automatic control
    • H03G3/30—Automatic control in amplifiers having semiconductor devices
    • H03G3/3084—Automatic control in amplifiers having semiconductor devices in receivers or transmitters for electromagnetic waves other than radiowaves, e.g. lightwaves
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
    • G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
    • G01N21/27—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands using photo-electric detection ; circuits for computing concentration
    • G01N21/272—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands using photo-electric detection ; circuits for computing concentration for following a reaction, e.g. for determining photometrically a reaction rate (photometric cinetic analysis)
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G3/00—Gain control in amplifiers or frequency changers without distortion of the input signal
    • H03G3/20—Automatic control
    • H03G3/30—Automatic control in amplifiers having semiconductor devices
    • H03G3/3005—Automatic control in amplifiers having semiconductor devices in amplifiers suitable for low-frequencies, e.g. audio amplifiers
FR6903605A 1968-02-16 1969-02-14 Withdrawn FR2002038A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE02086/68A SE335156B (fr) 1968-02-16 1968-02-16

Publications (1)

Publication Number Publication Date
FR2002038A1 true FR2002038A1 (fr) 1969-10-03

Family

ID=20259346

Family Applications (1)

Application Number Title Priority Date Filing Date
FR6903605A Withdrawn FR2002038A1 (fr) 1968-02-16 1969-02-14

Country Status (6)

Country Link
US (1) US3550029A (fr)
JP (1) JPS5032577B1 (fr)
DE (1) DE1907619C3 (fr)
FR (1) FR2002038A1 (fr)
GB (1) GB1261735A (fr)
SE (1) SE335156B (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3641451A (en) * 1970-02-24 1972-02-08 Motorola Inc Amplifier protection circuit
DE2410407C3 (de) * 1974-03-05 1981-05-21 Fa. Ludwig Krohne, 4100 Duisburg Verfahren zur Kompensation der elektrochemischen Störgleichspannung bei der induktiven Durchflußmessung mit periodisch zwischen zwei Induktionswerten hin- und hergeschaltetem Gleichfeld
SE449545B (sv) * 1980-09-01 1987-05-04 Ericsson Telefon Ab L M Forfarande jemte anordning for att utoka dynamikomradet i ett ingangssteg
JP2733962B2 (ja) * 1988-06-17 1998-03-30 ソニー株式会社 利得制御増幅器

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1009981A (en) * 1961-06-10 1965-11-17 Emi Ltd Improvements relating to feedback amplifiers
US3510793A (en) * 1964-02-26 1970-05-05 Int Standard Electric Corp Amplifier regulator employing an electrolytic variable resistance device

Also Published As

Publication number Publication date
JPS5032577B1 (fr) 1975-10-22
DE1907619A1 (fr) 1970-11-05
GB1261735A (en) 1972-01-26
DE1907619C3 (de) 1973-10-18
US3550029A (en) 1970-12-22
DE1907619B2 (de) 1973-03-22
SE335156B (fr) 1971-05-17

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Legal Events

Date Code Title Description
ST Notification of lapse