JPS5564421A - Variable impedance circuit - Google Patents

Variable impedance circuit

Info

Publication number
JPS5564421A
JPS5564421A JP13824678A JP13824678A JPS5564421A JP S5564421 A JPS5564421 A JP S5564421A JP 13824678 A JP13824678 A JP 13824678A JP 13824678 A JP13824678 A JP 13824678A JP S5564421 A JPS5564421 A JP S5564421A
Authority
JP
Japan
Prior art keywords
current
voltage
circuit
variable impedance
currents
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.)
Granted
Application number
JP13824678A
Other languages
English (en)
Japanese (ja)
Other versions
JPS6144409B2 (enrdf_load_stackoverflow
Inventor
Masayuki Katakura
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric Co 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP13824678A priority Critical patent/JPS5564421A/ja
Priority to US06/018,665 priority patent/US4288707A/en
Priority to EP79100751A priority patent/EP0004099B1/en
Priority to DE7979100751T priority patent/DE2962940D1/de
Publication of JPS5564421A publication Critical patent/JPS5564421A/ja
Publication of JPS6144409B2 publication Critical patent/JPS6144409B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H11/00—Networks using active elements
    • H03H11/46—One-port networks
    • 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
    • H03G1/0017—Circuits characterised by the type of controlling devices operated by a controlling current or voltage signal the device being at least one of the amplifying solid-state elements
    • H03G1/0023—Circuits characterised by the type of controlling devices operated by a controlling current or voltage signal the device being at least one of the amplifying solid-state elements in emitter-coupled or cascode amplifiers

Landscapes

  • Tone Control, Compression And Expansion, Limiting Amplitude (AREA)
  • Networks Using Active Elements (AREA)
  • Control Of Amplification And Gain Control (AREA)
JP13824678A 1978-03-14 1978-11-09 Variable impedance circuit Granted JPS5564421A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP13824678A JPS5564421A (en) 1978-11-09 1978-11-09 Variable impedance circuit
US06/018,665 US4288707A (en) 1978-03-14 1979-03-08 Electrically variable impedance circuit
EP79100751A EP0004099B1 (en) 1978-03-14 1979-03-13 Electrically variable impedance circuit
DE7979100751T DE2962940D1 (en) 1978-03-14 1979-03-13 Electrically variable impedance circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13824678A JPS5564421A (en) 1978-11-09 1978-11-09 Variable impedance circuit

Publications (2)

Publication Number Publication Date
JPS5564421A true JPS5564421A (en) 1980-05-15
JPS6144409B2 JPS6144409B2 (enrdf_load_stackoverflow) 1986-10-02

Family

ID=15217477

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13824678A Granted JPS5564421A (en) 1978-03-14 1978-11-09 Variable impedance circuit

Country Status (1)

Country Link
JP (1) JPS5564421A (enrdf_load_stackoverflow)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5799810A (en) * 1980-12-12 1982-06-21 Matsushita Electric Ind Co Ltd Signal controller
JPS5910035A (ja) * 1982-07-09 1984-01-19 Hitachi Ltd 可変インピ−ダンス装置
JPH0198308A (ja) * 1987-10-09 1989-04-17 Matsushita Electric Ind Co Ltd 電圧制御増幅器
US4990872A (en) * 1987-06-17 1991-02-05 Sanyo Electric Co., Ltd. Variable reactance circuit producing negative to positive varying reactance
JP2008072768A (ja) * 2007-11-30 2008-03-27 Mitsubishi Electric Corp 可変抵抗回路

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6371114U (enrdf_load_stackoverflow) * 1986-10-29 1988-05-13

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5799810A (en) * 1980-12-12 1982-06-21 Matsushita Electric Ind Co Ltd Signal controller
JPS5910035A (ja) * 1982-07-09 1984-01-19 Hitachi Ltd 可変インピ−ダンス装置
US4990872A (en) * 1987-06-17 1991-02-05 Sanyo Electric Co., Ltd. Variable reactance circuit producing negative to positive varying reactance
JPH0198308A (ja) * 1987-10-09 1989-04-17 Matsushita Electric Ind Co Ltd 電圧制御増幅器
JP2008072768A (ja) * 2007-11-30 2008-03-27 Mitsubishi Electric Corp 可変抵抗回路

Also Published As

Publication number Publication date
JPS6144409B2 (enrdf_load_stackoverflow) 1986-10-02

Similar Documents

Publication Publication Date Title
JPS5564421A (en) Variable impedance circuit
JPS54101306A (en) Reproduction amplifier circuit for hall head
JPS55165009A (en) Signal transmission circuit
JPS5592006A (en) Amplifier
JPS5541012A (en) Gain control circuit
JPS57166670A (en) Division circuit
JPS5680906A (en) Acoustic power amplifier
JPH0198309A (ja) Ｃ級増幅器の出力電力を制御する装置
JPS5621416A (en) Digital-analogue converting circuit
JPS5728407A (en) Amplifying circuit
JPS554102A (en) Non-linear generating circuit
JPS55163915A (en) Electric current output d/a converting circuit
JPS5750115A (en) Gain control circuit
JPS55122679A (en) Arc welding power unit
JPS5735403A (en) Amplifier
JPS57133707A (en) Bias circuit for power amplifier
JPS57154923A (en) Phase circuit
JPS5696514A (en) Amplifying circuit with variable gain
JPS5513517A (en) Variable resistance circuit
JPS5623048A (en) Control circuit for signal level
GB1506882A (en) Current regulating circuits
GB923428A (en) Circuit arrangement for controlling the amplification in a transistor amplifier stage
JPS55153123A (en) Variable equalizing circuit
JPS5317249A (en) Gain variable amplifier
JPS5771163A (en) Double balanced mixer