GB553947A - Improvements in electrical means for the multiplication of variable quantities - Google Patents

Improvements in electrical means for the multiplication of variable quantities

Info

Publication number
GB553947A
GB553947A GB11003/41A GB1100341A GB553947A GB 553947 A GB553947 A GB 553947A GB 11003/41 A GB11003/41 A GB 11003/41A GB 1100341 A GB1100341 A GB 1100341A GB 553947 A GB553947 A GB 553947A
Authority
GB
United Kingdom
Prior art keywords
impedances
zero
multiplication
factors
voltages
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
GB11003/41A
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.)
Telefonaktiebolaget LM Ericsson AB
Original Assignee
Telefonaktiebolaget LM Ericsson 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 Telefonaktiebolaget LM Ericsson AB filed Critical Telefonaktiebolaget LM Ericsson AB
Publication of GB553947A publication Critical patent/GB553947A/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
    • G06G7/16—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

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mathematical Physics (AREA)
  • Theoretical Computer Science (AREA)
  • Power Engineering (AREA)
  • Software Systems (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Adjustable Resistors (AREA)
GB11003/41A 1940-07-05 1941-08-28 Improvements in electrical means for the multiplication of variable quantities Expired GB553947A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE50740X 1940-07-05

Publications (1)

Publication Number Publication Date
GB553947A true GB553947A (en) 1943-06-11

Family

ID=20265643

Family Applications (1)

Application Number Title Priority Date Filing Date
GB11003/41A Expired GB553947A (en) 1940-07-05 1941-08-28 Improvements in electrical means for the multiplication of variable quantities

Country Status (4)

Country Link
BE (1) BE442021A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
CH (1) CH227178A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
FR (1) FR887754A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
GB (1) GB553947A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2454520A (en) * 1945-03-23 1948-11-23 Fairchild Camera Instr Co Ratio-measuring system
US2636151A (en) * 1952-01-31 1953-04-21 Bailey Meter Co Measuring system
US2665066A (en) * 1945-12-01 1954-01-05 Bailey Meter Co Electric calculating circuits
US2678163A (en) * 1949-12-10 1954-05-11 John O Evans Jr Computing and predicting device
US2713457A (en) * 1950-06-09 1955-07-19 Phillips Petroleum Co Computer
US2998186A (en) * 1958-04-25 1961-08-29 Honeywell Regulator Co Automatic electrical analogue computer
US3076603A (en) * 1956-03-14 1963-02-05 Tinius Olsen Testing Mach Co Materials testing equipment
US3114037A (en) * 1957-01-07 1963-12-10 William R Brownlee Measuring and controlling method and apparatus

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2454520A (en) * 1945-03-23 1948-11-23 Fairchild Camera Instr Co Ratio-measuring system
US2665066A (en) * 1945-12-01 1954-01-05 Bailey Meter Co Electric calculating circuits
US2678163A (en) * 1949-12-10 1954-05-11 John O Evans Jr Computing and predicting device
US2713457A (en) * 1950-06-09 1955-07-19 Phillips Petroleum Co Computer
US2636151A (en) * 1952-01-31 1953-04-21 Bailey Meter Co Measuring system
US3076603A (en) * 1956-03-14 1963-02-05 Tinius Olsen Testing Mach Co Materials testing equipment
US3114037A (en) * 1957-01-07 1963-12-10 William R Brownlee Measuring and controlling method and apparatus
US2998186A (en) * 1958-04-25 1961-08-29 Honeywell Regulator Co Automatic electrical analogue computer

Also Published As

Publication number Publication date
FR887754A (fr) 1943-11-23
CH227178A (de) 1943-05-31
BE442021A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

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