GB1444765A - Contrallable current source - Google Patents

Contrallable current source

Info

Publication number
GB1444765A
GB1444765A GB4192373A GB4192373A GB1444765A GB 1444765 A GB1444765 A GB 1444765A GB 4192373 A GB4192373 A GB 4192373A GB 4192373 A GB4192373 A GB 4192373A GB 1444765 A GB1444765 A GB 1444765A
Authority
GB
United Kingdom
Prior art keywords
amplifier
potential
source
output
transistors
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
GB4192373A
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.)
Philips Electronics UK Ltd
Original Assignee
Philips Electronic and Associated Industries Ltd
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 Electronic and Associated Industries Ltd filed Critical Philips Electronic and Associated Industries Ltd
Publication of GB1444765A publication Critical patent/GB1444765A/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
    • 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
    • G06G7/16—Arrangements for performing computing operations, e.g. operational amplifiers for multiplication or division
    • G06G7/163—Arrangements for performing computing operations, e.g. operational amplifiers for multiplication or division using a variable impedance controlled by one of the input signals, variable amplification or transfer function
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mathematical Physics (AREA)
  • Theoretical Computer Science (AREA)
  • Software Systems (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Power Engineering (AREA)
  • Amplifiers (AREA)
  • Continuous-Control Power Sources That Use Transistors (AREA)
GB4192373A 1972-09-09 1973-09-06 Contrallable current source Expired GB1444765A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL7212293A NL7212293A (it) 1972-09-09 1972-09-09

Publications (1)

Publication Number Publication Date
GB1444765A true GB1444765A (en) 1976-08-04

Family

ID=19816901

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4192373A Expired GB1444765A (en) 1972-09-09 1973-09-06 Contrallable current source

Country Status (7)

Country Link
JP (1) JPS5412619B2 (it)
CA (1) CA1015401A (it)
DE (1) DE2342325A1 (it)
FR (1) FR2199145B1 (it)
GB (1) GB1444765A (it)
IT (1) IT993882B (it)
NL (1) NL7212293A (it)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2339500A3 (en) * 2009-12-16 2012-02-29 Macroblock, Inc. Analog multiplier

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2339500A3 (en) * 2009-12-16 2012-02-29 Macroblock, Inc. Analog multiplier

Also Published As

Publication number Publication date
FR2199145A1 (it) 1974-04-05
AU6005073A (en) 1975-03-06
IT993882B (it) 1975-09-30
CA1015401A (en) 1977-08-09
DE2342325A1 (de) 1974-03-21
JPS4968249A (it) 1974-07-02
NL7212293A (it) 1974-03-12
JPS5412619B2 (it) 1979-05-24
FR2199145B1 (it) 1978-11-10

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee