DE2355714C2 - - Google Patents

Info

Publication number
DE2355714C2
DE2355714C2 DE2355714A DE2355714A DE2355714C2 DE 2355714 C2 DE2355714 C2 DE 2355714C2 DE 2355714 A DE2355714 A DE 2355714A DE 2355714 A DE2355714 A DE 2355714A DE 2355714 C2 DE2355714 C2 DE 2355714C2
Authority
DE
Germany
Prior art keywords
transistor
impedance
resistor
signal
collector
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
DE2355714A
Other languages
German (de)
English (en)
Other versions
DE2355714A1 (de
Inventor
Yoshio Tokio/Tokyo Jp Ishigaki
Masayuki Komae Tokio/Tokyo Jp Hongu
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.)
Sony Corp
Original Assignee
Sony 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 Sony Corp filed Critical Sony Corp
Publication of DE2355714A1 publication Critical patent/DE2355714A1/de
Application granted granted Critical
Publication of DE2355714C2 publication Critical patent/DE2355714C2/de
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
    • 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
    • H03G—CONTROL OF AMPLIFICATION
    • H03G3/00—Gain control in amplifiers or frequency changers
    • H03G3/20—Automatic control
    • H03G3/30—Automatic control in amplifiers having semiconductor devices
    • H03G3/3005—Automatic control in amplifiers having semiconductor devices in amplifiers suitable for low-frequencies, e.g. audio amplifiers
    • H03G3/301—Automatic control in amplifiers having semiconductor devices in amplifiers suitable for low-frequencies, e.g. audio amplifiers the gain being continuously variable
    • H03G3/3015—Automatic control in amplifiers having semiconductor devices in amplifiers suitable for low-frequencies, e.g. audio amplifiers the gain being continuously variable using diodes or transistors

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Control Of Amplification And Gain Control (AREA)
  • Amplifiers (AREA)
DE19732355714 1972-11-09 1973-11-07 Verstaerkungsregelkreis Granted DE2355714A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11230972A JPS5710604B2 (enEXAMPLES) 1972-11-09 1972-11-09

Publications (2)

Publication Number Publication Date
DE2355714A1 DE2355714A1 (de) 1974-05-16
DE2355714C2 true DE2355714C2 (enEXAMPLES) 1987-05-27

Family

ID=14583434

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19732355714 Granted DE2355714A1 (de) 1972-11-09 1973-11-07 Verstaerkungsregelkreis

Country Status (11)

Country Link
US (1) US3873932A (enEXAMPLES)
JP (1) JPS5710604B2 (enEXAMPLES)
AU (1) AU474297B2 (enEXAMPLES)
BR (1) BR7308769D0 (enEXAMPLES)
CA (1) CA993529A (enEXAMPLES)
DE (1) DE2355714A1 (enEXAMPLES)
FR (1) FR2206627B1 (enEXAMPLES)
GB (1) GB1446217A (enEXAMPLES)
IT (1) IT996395B (enEXAMPLES)
NL (1) NL177543C (enEXAMPLES)
SE (1) SE396523B (enEXAMPLES)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5285351U (enEXAMPLES) * 1975-12-22 1977-06-25
FR2685578A1 (fr) * 1991-12-23 1993-06-25 Philips Electronique Lab Circuit integre comprenant un amplificateur a gain variable.

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1181279B (de) * 1964-02-18 1964-11-12 Telefunken Patent Selbsttaetig geregelte Verstaerkerstufe mit Transistor
US3395357A (en) * 1966-09-22 1968-07-30 Bell Telephone Labor Inc Automatic gain control system
US3538448A (en) * 1968-01-17 1970-11-03 Rca Corp Gain controlled amplifier
US3516003A (en) * 1968-07-30 1970-06-02 Bailey Meter Co High-gain single-stage a.c. cascode amplifier circuit
US3581222A (en) * 1969-03-19 1971-05-25 Wilton Co Linear voltage controlled attenuator
CH504819A (de) * 1970-07-10 1971-03-15 Ibm Abtasteinrichtung
US3706937A (en) * 1970-12-03 1972-12-19 Nat Semiconductor Corp Gain controlled amplifier for integrated circuit applications
DE2060192C3 (de) * 1970-12-08 1978-04-13 Robert Bosch Gmbh, 7000 Stuttgart Schaltungsanordnung zur verzögerungsfreien Verstärkungssteuerung
JPS5620724B2 (enEXAMPLES) * 1972-07-27 1981-05-15

Also Published As

Publication number Publication date
FR2206627A1 (enEXAMPLES) 1974-06-07
NL177543B (nl) 1985-05-01
CA993529A (en) 1976-07-20
JPS49132958A (enEXAMPLES) 1974-12-20
BR7308769D0 (pt) 1974-08-29
NL7315408A (enEXAMPLES) 1974-05-13
IT996395B (it) 1975-12-10
JPS5710604B2 (enEXAMPLES) 1982-02-27
NL177543C (nl) 1985-10-01
US3873932A (en) 1975-03-25
GB1446217A (en) 1976-08-18
AU6229973A (en) 1975-05-08
AU474297B2 (en) 1976-07-15
SE396523B (sv) 1977-09-19
DE2355714A1 (de) 1974-05-16
FR2206627B1 (enEXAMPLES) 1977-08-19

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Legal Events

Date Code Title Description
OD Request for examination
D2 Grant after examination
8364 No opposition during term of opposition