FR1227854A - Logarithmic amplifier - Google Patents

Logarithmic amplifier

Info

Publication number
FR1227854A
FR1227854A FR798189A FR798189A FR1227854A FR 1227854 A FR1227854 A FR 1227854A FR 798189 A FR798189 A FR 798189A FR 798189 A FR798189 A FR 798189A FR 1227854 A FR1227854 A FR 1227854A
Authority
FR
France
Prior art keywords
logarithmic amplifier
logarithmic
amplifier
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
FR798189A
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.)
INTERNATIONALE NAVIGATIE APPARATEN NV
Original Assignee
INTERNATIONALE NAVIGATIE APPARATEN 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 INTERNATIONALE NAVIGATIE APPARATEN NV filed Critical INTERNATIONALE NAVIGATIE APPARATEN NV
Application granted granted Critical
Publication of FR1227854A publication Critical patent/FR1227854A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06G—ANALOGUE COMPUTERS
    • G06G7/00—Devices in which the computing operation is performed by varying electric or magnetic quantities
    • G06G7/12—Arrangements for performing computing operations, e.g. operational amplifiers
    • G06G7/24—Arrangements for performing computing operations, e.g. operational amplifiers for evaluating logarithmic or exponential functions, e.g. hyperbolic functions
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G7/00—Volume compression or expansion in amplifiers
    • H03G7/02—Volume compression or expansion in amplifiers having discharge tubes
    • H03G7/04—Volume compression or expansion in amplifiers having discharge tubes incorporating negative feedback

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Mathematical Physics (AREA)
  • Theoretical Computer Science (AREA)
  • Software Systems (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Amplifiers (AREA)
FR798189A 1958-06-23 1959-06-22 Logarithmic amplifier Expired FR1227854A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL3090011X 1958-06-23

Publications (1)

Publication Number Publication Date
FR1227854A true FR1227854A (en) 1960-08-24

Family

ID=19877013

Family Applications (1)

Application Number Title Priority Date Filing Date
FR798189A Expired FR1227854A (en) 1958-06-23 1959-06-22 Logarithmic amplifier

Country Status (3)

Country Link
US (1) US3090011A (en)
FR (1) FR1227854A (en)
NL (1) NL228925A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3652871A (en) * 1970-01-19 1972-03-28 Us Navy Exponential attenuator-amplifier circuit
US5317275A (en) * 1992-01-13 1994-05-31 Orbital Sciences Corporation Conductance measurement circuit with wide dynamic range

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2162878A (en) * 1936-02-03 1939-06-20 Rca Corp Automatic gain control circuits
US2600423A (en) * 1948-04-30 1952-06-17 Electrodyne Co Electrical system with output signal varying logarithmically with respect to the input signal
US2685000A (en) * 1949-04-29 1954-07-27 Rca Corp Stabilized direct current amplifier
GB696213A (en) * 1950-01-25 1953-08-26 Emi Ltd Improvements relating to means for indicating the logarithmic value of a magnitude
US2877348A (en) * 1954-12-15 1959-03-10 Elmer J Wade Logarithmic amplifier
US2903524A (en) * 1956-01-31 1959-09-08 Ca Atomic Energy Ltd D-c amplifier

Also Published As

Publication number Publication date
NL228925A (en)
US3090011A (en) 1963-05-14

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