DE3202501A1 - Lautstaerkeregelschaltung - Google Patents

Lautstaerkeregelschaltung

Info

Publication number
DE3202501A1
DE3202501A1 DE19823202501 DE3202501A DE3202501A1 DE 3202501 A1 DE3202501 A1 DE 3202501A1 DE 19823202501 DE19823202501 DE 19823202501 DE 3202501 A DE3202501 A DE 3202501A DE 3202501 A1 DE3202501 A1 DE 3202501A1
Authority
DE
Germany
Prior art keywords
current
transistor
divider
ioe
circuit
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
DE19823202501
Other languages
German (de)
English (en)
Other versions
DE3202501C2 (enExample
Inventor
Isamu Fukaya Saitama Okui
Kozo Yoshihisa
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
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 Tokyo Shibaura Electric Co Ltd filed Critical Tokyo Shibaura Electric Co Ltd
Publication of DE3202501A1 publication Critical patent/DE3202501A1/de
Application granted granted Critical
Publication of DE3202501C2 publication Critical patent/DE3202501C2/de
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G3/00—Gain control in amplifiers or frequency changers
    • H03G3/20—Automatic control
    • H03G3/22—Automatic control in amplifiers having discharge tubes
    • H03G3/24—Control dependent upon ambient noise level or sound level
    • 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

  • Control Of Amplification And Gain Control (AREA)
  • Amplifiers (AREA)
DE19823202501 1981-01-28 1982-01-27 Lautstaerkeregelschaltung Granted DE3202501A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56012076A JPS57125509A (en) 1981-01-28 1981-01-28 Signal level control circuit

Publications (2)

Publication Number Publication Date
DE3202501A1 true DE3202501A1 (de) 1982-08-12
DE3202501C2 DE3202501C2 (enExample) 1988-01-28

Family

ID=11795489

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19823202501 Granted DE3202501A1 (de) 1981-01-28 1982-01-27 Lautstaerkeregelschaltung

Country Status (5)

Country Link
US (1) US4494075A (enExample)
JP (1) JPS57125509A (enExample)
KR (1) KR860000440B1 (enExample)
DE (1) DE3202501A1 (enExample)
GB (1) GB2091962B (enExample)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4634995A (en) * 1982-01-28 1987-01-06 Hitachi, Ltd. Electronic circuitry utilizing an inerted Darlington amplifier output stage to be operable with a low supply voltage
FI87860C (fi) * 1988-04-05 1993-02-25 Nokia Mobira Oy Differentialutgaongens koppling som enpolig
US5724519A (en) * 1989-02-17 1998-03-03 Hitachi, Ltd. Complementary transistor circuit and amplifier and CRT display device using the same
JPH06338934A (ja) * 1993-05-25 1994-12-06 Exar Corp 事象駆動型制御回路を有するスピーカーホーン
US5319704A (en) * 1993-06-17 1994-06-07 Exar Corporation Control circuit for voltage controlled attenuator for speakerphones
US5539831A (en) * 1993-08-16 1996-07-23 The University Of Mississippi Active noise control stethoscope
US5896063A (en) * 1997-04-30 1999-04-20 Maxim Integrated Products, Inc. Variable gain amplifier with improved linearity and bandwidth
US7071858B2 (en) * 2004-10-29 2006-07-04 Broadcom Corporation Method and system for a glitch-free differential current steering switch circuit for high speed, high resolution digital-to-analog conversion

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3857047A (en) * 1973-06-08 1974-12-24 Rca Corp Detector employing a current mirror
DE2526310A1 (de) * 1975-06-12 1976-12-23 Philips Patentverwaltung Schaltung zur elektronischen verstaerkungseinstellung
GB2016838A (en) * 1978-03-20 1979-09-26 Philips Nv Variable gain transistor amplifier circuit
DE3012965A1 (de) * 1979-04-04 1980-10-30 Nippon Musical Instruments Mfg Verstaerkungsgeregelter verstaerker
DE2850487B2 (de) * 1977-11-24 1980-12-18 Toko K.K., Tokio Transistorverstärker mit automatischer Verstärkungsregelung
DE3125824A1 (de) * 1980-07-08 1982-04-01 Tokyo Shibaura Denki K.K., Kawasaki, Kanagawa Lautstaerken-regelunsschaltung

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4065725A (en) * 1976-08-16 1977-12-27 Motorola, Inc. Gain control circuit
JPS5396749A (en) * 1977-02-04 1978-08-24 Torio Kk Current mirror circuit differential amplifier
JPS5547714A (en) * 1978-09-30 1980-04-04 Toshiba Corp Variable gain amplifying circuit

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3857047A (en) * 1973-06-08 1974-12-24 Rca Corp Detector employing a current mirror
DE2526310A1 (de) * 1975-06-12 1976-12-23 Philips Patentverwaltung Schaltung zur elektronischen verstaerkungseinstellung
DE2850487B2 (de) * 1977-11-24 1980-12-18 Toko K.K., Tokio Transistorverstärker mit automatischer Verstärkungsregelung
GB2016838A (en) * 1978-03-20 1979-09-26 Philips Nv Variable gain transistor amplifier circuit
DE3012965A1 (de) * 1979-04-04 1980-10-30 Nippon Musical Instruments Mfg Verstaerkungsgeregelter verstaerker
DE3125824A1 (de) * 1980-07-08 1982-04-01 Tokyo Shibaura Denki K.K., Kawasaki, Kanagawa Lautstaerken-regelunsschaltung

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
V. TIETZE, Ch. SCHENK: Halbleiter-Schaltungs- technik, 2.Aufl., Berlin Heidelberg New York, Springer Verlag, 1971, S.118, ISBN 3-540-05285-2 *

Also Published As

Publication number Publication date
DE3202501C2 (enExample) 1988-01-28
GB2091962B (en) 1984-09-05
KR830009689A (ko) 1983-12-22
KR860000440B1 (ko) 1986-04-19
JPS6341446B2 (enExample) 1988-08-17
GB2091962A (en) 1982-08-04
US4494075A (en) 1985-01-15
JPS57125509A (en) 1982-08-04

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Legal Events

Date Code Title Description
OP8 Request for examination as to paragraph 44 patent law
8127 New person/name/address of the applicant

Owner name: KABUSHIKI KAISHA TOSHIBA, KAWASAKI, KANAGAWA, JP

D2 Grant after examination
8364 No opposition during term of opposition
8328 Change in the person/name/address of the agent

Free format text: BLUMBACH, KRAMER & PARTNER, 81245 MUENCHEN

8339 Ceased/non-payment of the annual fee