JPS5910035A - 可変インピ−ダンス装置 - Google Patents

可変インピ−ダンス装置

Info

Publication number
JPS5910035A
JPS5910035A JP57118572A JP11857282A JPS5910035A JP S5910035 A JPS5910035 A JP S5910035A JP 57118572 A JP57118572 A JP 57118572A JP 11857282 A JP11857282 A JP 11857282A JP S5910035 A JPS5910035 A JP S5910035A
Authority
JP
Japan
Prior art keywords
signal
terminal
circuit
amplifier
voltage
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
JP57118572A
Other languages
English (en)
Japanese (ja)
Other versions
JPH0572766B2 (enrdf_load_stackoverflow
Inventor
Kazuo Watanabe
一雄 渡辺
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP57118572A priority Critical patent/JPS5910035A/ja
Publication of JPS5910035A publication Critical patent/JPS5910035A/ja
Publication of JPH0572766B2 publication Critical patent/JPH0572766B2/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

Landscapes

  • Signal Processing Not Specific To The Method Of Recording And Reproducing (AREA)
  • Tone Control, Compression And Expansion, Limiting Amplitude (AREA)
  • Networks Using Active Elements (AREA)
  • Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
JP57118572A 1982-07-09 1982-07-09 可変インピ−ダンス装置 Granted JPS5910035A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP57118572A JPS5910035A (ja) 1982-07-09 1982-07-09 可変インピ−ダンス装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP57118572A JPS5910035A (ja) 1982-07-09 1982-07-09 可変インピ−ダンス装置

Publications (2)

Publication Number Publication Date
JPS5910035A true JPS5910035A (ja) 1984-01-19
JPH0572766B2 JPH0572766B2 (enrdf_load_stackoverflow) 1993-10-13

Family

ID=14739911

Family Applications (1)

Application Number Title Priority Date Filing Date
JP57118572A Granted JPS5910035A (ja) 1982-07-09 1982-07-09 可変インピ−ダンス装置

Country Status (1)

Country Link
JP (1) JPS5910035A (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02254806A (ja) * 1989-03-28 1990-10-15 Mitsubishi Electric Corp 半導体集積回路フイルタ

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5564421A (en) * 1978-11-09 1980-05-15 Toshiba Corp Variable impedance circuit
JPS5738012A (en) * 1980-08-20 1982-03-02 Hitachi Ltd Variable resistor circuit using current miller circuit

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5564421A (en) * 1978-11-09 1980-05-15 Toshiba Corp Variable impedance circuit
JPS5738012A (en) * 1980-08-20 1982-03-02 Hitachi Ltd Variable resistor circuit using current miller circuit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02254806A (ja) * 1989-03-28 1990-10-15 Mitsubishi Electric Corp 半導体集積回路フイルタ

Also Published As

Publication number Publication date
JPH0572766B2 (enrdf_load_stackoverflow) 1993-10-13

Similar Documents

Publication Publication Date Title
JP2734265B2 (ja) エレクトレット・コンデンサ・マイクロフォン用増幅回路
US2691075A (en) Transistor amplifier with high undistorted output
US4446441A (en) Transient noise free type amplifier circuit
AU559556B2 (en) A circuit for a high impedance signal source
US4283683A (en) Audio bridge circuit
JPS5910035A (ja) 可変インピ−ダンス装置
US3048659A (en) Microphone preamplifier
JP3061674B2 (ja) 利得制御回路
US5760651A (en) Inductorless voltage biasing circuit for and Ac-coupled amplifier
US3343099A (en) Audio compressor circuit
JPS6138269Y2 (enrdf_load_stackoverflow)
US4412189A (en) Switchable signal compressor/signal expander
US3995229A (en) High slew rate operational amplifier circuit
JPS5836031A (ja) 雑音低減装置
US4035738A (en) Low noise amplifier
US3460048A (en) Multistage direct coupled transistor amplifiers employing feedback
US3534180A (en) Phonograph preamplifier with direct dc bias coupling between the transistor and piezoresistive pickup
US3262063A (en) Line voltage energized transistor signal amplifier including a high voltage stage and a low voltage stage
US3533002A (en) Operational amplifier providing low input current and enhanced high frequency gain
JPS5917714A (ja) 振幅制限回路
JPS5955613A (ja) 切換可能型信号圧縮器／信号伸長器
JPS61147606A (ja) Ｒｆ増幅回路
JPS6248404B2 (enrdf_load_stackoverflow)
JPH041526B2 (enrdf_load_stackoverflow)
US3390345A (en) Transistor protection circuit