JPH0344455B2 - - Google Patents

Info

Publication number
JPH0344455B2
JPH0344455B2 JP57228909A JP22890982A JPH0344455B2 JP H0344455 B2 JPH0344455 B2 JP H0344455B2 JP 57228909 A JP57228909 A JP 57228909A JP 22890982 A JP22890982 A JP 22890982A JP H0344455 B2 JPH0344455 B2 JP H0344455B2
Authority
JP
Japan
Prior art keywords
circuit
transistors
transistor
current
constant current
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
JP57228909A
Other languages
English (en)
Japanese (ja)
Other versions
JPS59117815A (ja
Inventor
Kenji Yokoyama
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.)
Yamaha Corp
Original Assignee
Yamaha Corp
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 Yamaha Corp filed Critical Yamaha Corp
Priority to JP57228909A priority Critical patent/JPS59117815A/ja
Priority to US06/549,976 priority patent/US4568840A/en
Publication of JPS59117815A publication Critical patent/JPS59117815A/ja
Publication of JPH0344455B2 publication Critical patent/JPH0344455B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G5/00—Tone control or bandwidth control in amplifiers
    • 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
    • H03G1/0035—Circuits characterised by the type of controlling devices operated by a controlling current or voltage signal using continuously variable impedance elements
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H11/00—Networks using active elements
    • H03H11/46—One-port networks

Landscapes

  • Networks Using Active Elements (AREA)
JP57228909A 1982-12-25 1982-12-25 電気抵抗制御回路 Granted JPS59117815A (ja)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP57228909A JPS59117815A (ja) 1982-12-25 1982-12-25 電気抵抗制御回路
US06/549,976 US4568840A (en) 1982-12-25 1983-11-08 Variable resistance circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP57228909A JPS59117815A (ja) 1982-12-25 1982-12-25 電気抵抗制御回路

Publications (2)

Publication Number Publication Date
JPS59117815A JPS59117815A (ja) 1984-07-07
JPH0344455B2 true JPH0344455B2 (en]) 1991-07-08

Family

ID=16883748

Family Applications (1)

Application Number Title Priority Date Filing Date
JP57228909A Granted JPS59117815A (ja) 1982-12-25 1982-12-25 電気抵抗制御回路

Country Status (2)

Country Link
US (1) US4568840A (en])
JP (1) JPS59117815A (en])

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2195505B (en) * 1986-09-17 1990-08-15 Motorola Inc Gain control cell
US4994774A (en) * 1988-02-19 1991-02-19 U.S. Philips Corporation Integrated low-pass filter arrangement
US5065112A (en) * 1989-10-31 1991-11-12 Sanyo Electric Co., Ltd. Amplification circuit with improved linearity
DE69110065T2 (de) * 1990-02-14 1996-01-18 Philips Electronics Nv Stromausgleichschaltung.
US5132559A (en) * 1991-05-03 1992-07-21 Motorola, Inc. Circuit for trimming input offset voltage utilizing variable resistors
SE502766C2 (sv) * 1994-03-23 1996-01-08 Ellemtel Utvecklings Ab Kopplingsarrangemang
US5973563A (en) * 1997-12-10 1999-10-26 National Semiconductor Corporation High power output stage with temperature stable precisely controlled quiescent current and inherent short circuit protection
JP4516177B2 (ja) * 2000-04-27 2010-08-04 新日本無線株式会社 可変利得増幅回路
US9177742B2 (en) 2011-10-18 2015-11-03 G & W Electric Company Modular solid dielectric switchgear
KR102274908B1 (ko) * 2015-04-30 2021-07-08 엘지디스플레이 주식회사 햅틱 구동 장치 및 햅틱 기능을 갖는 전자 기기

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT303203B (de) * 1970-11-12 1972-11-10 Akg Akustische Kino Geraete Schaltungsanordnung zur stufenlosen Pegeleinstellung elektrischer Signale
US3891937A (en) * 1972-12-21 1975-06-24 Philips Corp Circuit arrangement for electronic gain/control, in particular electronic volume control circuit
JPS5947495B2 (ja) * 1975-04-04 1984-11-19 株式会社日立製作所 可変インピ−ダンス回路
GB1568056A (en) * 1975-10-31 1980-05-21 Dolby Laboratories Inc Electrically variable impedance ciruits
NL7614515A (nl) * 1976-12-29 1978-07-03 Philips Nv In versterking geregelde signaalversterker.
US4288707A (en) * 1978-03-14 1981-09-08 Tokyo Shibaura Denki Kabushiki Kaisha Electrically variable impedance circuit
JPS5564420A (en) * 1978-11-09 1980-05-15 Toshiba Corp Variable impedance circuit
US4242650A (en) * 1978-11-13 1980-12-30 Bell Telephone Laboratories, Incorporated Active variable equalizer
JPS5857814A (ja) * 1981-10-01 1983-04-06 Pioneer Electronic Corp 電子インピ−ダンス装置
JPS59119909A (ja) * 1982-12-25 1984-07-11 Fujitsu Ltd 能動負荷回路

Also Published As

Publication number Publication date
JPS59117815A (ja) 1984-07-07
US4568840A (en) 1986-02-04

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