JPH0235488B2 - - Google Patents

Info

Publication number
JPH0235488B2
JPH0235488B2 JP57094120A JP9412082A JPH0235488B2 JP H0235488 B2 JPH0235488 B2 JP H0235488B2 JP 57094120 A JP57094120 A JP 57094120A JP 9412082 A JP9412082 A JP 9412082A JP H0235488 B2 JPH0235488 B2 JP H0235488B2
Authority
JP
Japan
Prior art keywords
signal
input
transistor
amplifier
resistor
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 - Lifetime
Application number
JP57094120A
Other languages
English (en)
Japanese (ja)
Other versions
JPS5877312A (ja
Inventor
Aaru Uerando Debitsudo
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.)
BSR NORTH AMERICA Ltd
Original Assignee
BSR NORTH AMERICA 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 BSR NORTH AMERICA Ltd filed Critical BSR NORTH AMERICA Ltd
Publication of JPS5877312A publication Critical patent/JPS5877312A/ja
Publication of JPH0235488B2 publication Critical patent/JPH0235488B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G1/00—Details of arrangements for controlling amplification
    • H03G1/0005—Circuits characterised by the type of controlling devices operated by a controlling current or voltage signal

Landscapes

  • Control Of Amplification And Gain Control (AREA)
  • Amplifiers (AREA)
JP57094120A 1981-10-30 1982-06-03 倍率回路 Granted JPS5877312A (ja)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US316754 1981-10-30
US06/316,754 US4434380A (en) 1981-10-30 1981-10-30 Compensation for VCA OP amp errors

Publications (2)

Publication Number Publication Date
JPS5877312A JPS5877312A (ja) 1983-05-10
JPH0235488B2 true JPH0235488B2 (en]) 1990-08-10

Family

ID=23230529

Family Applications (1)

Application Number Title Priority Date Filing Date
JP57094120A Granted JPS5877312A (ja) 1981-10-30 1982-06-03 倍率回路

Country Status (2)

Country Link
US (1) US4434380A (en])
JP (1) JPS5877312A (en])

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4565935A (en) * 1982-07-22 1986-01-21 Allied Corporation Logarithmic converter circuit arrangements
US4634986A (en) * 1985-02-08 1987-01-06 The United States Of America As Represented By The United States Department Of Energy Log amplifier with pole-zero compensation
US6037993A (en) * 1997-03-17 2000-03-14 Antec Corporation Digital BTSC compander system
US6259482B1 (en) 1998-03-11 2001-07-10 Matthew F. Easley Digital BTSC compander system

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3532868A (en) 1968-07-24 1970-10-06 Electronic Associates Log multiplier with logarithmic function generator connected in feedback loop of operational amplifier
US3714462A (en) 1971-06-14 1973-01-30 D Blackmer Multiplier circuits
US4234804A (en) 1978-09-19 1980-11-18 Dbx, Inc. Signal correction for electrical gain control systems
US4341962A (en) 1980-06-03 1982-07-27 Valley People, Inc. Electronic gain control device

Also Published As

Publication number Publication date
JPS5877312A (ja) 1983-05-10
US4434380A (en) 1984-02-28

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