GB1138892A - Logarithmic amplifier - Google Patents

Logarithmic amplifier

Info

Publication number
GB1138892A
GB1138892A GB1661166A GB1661166A GB1138892A GB 1138892 A GB1138892 A GB 1138892A GB 1661166 A GB1661166 A GB 1661166A GB 1661166 A GB1661166 A GB 1661166A GB 1138892 A GB1138892 A GB 1138892A
Authority
GB
United Kingdom
Prior art keywords
voltage
produce
sin
circuit
cos
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
GB1661166A
Other languages
English (en)
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.)
Alcatel Lucent SAS
Original Assignee
Alcatel SA
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 Alcatel SA filed Critical Alcatel SA
Publication of GB1138892A publication Critical patent/GB1138892A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; 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

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)
  • Networks Using Active Elements (AREA)
  • Tone Control, Compression And Expansion, Limiting Amplitude (AREA)
GB1661166A 1965-04-16 1966-04-15 Logarithmic amplifier Expired GB1138892A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR13695A FR1440150A (fr) 1965-04-16 1965-04-16 Amplificateur logarithmique

Publications (1)

Publication Number Publication Date
GB1138892A true GB1138892A (en) 1969-01-01

Family

ID=8576709

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1661166A Expired GB1138892A (en) 1965-04-16 1966-04-15 Logarithmic amplifier

Country Status (5)

Country Link
BE (1) BE679626A (enExample)
DE (1) DE1288342B (enExample)
FR (1) FR1440150A (enExample)
GB (1) GB1138892A (enExample)
NL (1) NL6604934A (enExample)

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR986450A (fr) * 1949-03-07 1951-07-31 Sncf Dispositif électrique reproduisant une fonction donnée d'une variable et ses applications

Also Published As

Publication number Publication date
BE679626A (enExample) 1966-10-17
NL6604934A (enExample) 1966-10-17
FR1440150A (fr) 1966-05-27
DE1288342B (de) 1969-01-30

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