JPS4991166A - - Google Patents
Info
- Publication number
- JPS4991166A JPS4991166A JP48139333A JP13933373A JPS4991166A JP S4991166 A JPS4991166 A JP S4991166A JP 48139333 A JP48139333 A JP 48139333A JP 13933373 A JP13933373 A JP 13933373A JP S4991166 A JPS4991166 A JP S4991166A
- Authority
- JP
- Japan
- 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
Links
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03G—CONTROL OF AMPLIFICATION
- H03G5/00—Tone control or bandwidth control in amplifiers
- H03G5/02—Manually-operated control
- H03G5/04—Manually-operated control in untuned amplifiers
- H03G5/10—Manually-operated control in untuned amplifiers having semiconductor devices
-
- 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 of the amplifier
- 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 of the amplifier in emitter-coupled or cascode amplifiers
Landscapes
- Tone Control, Compression And Expansion, Limiting Amplitude (AREA)
- Networks Using Active Elements (AREA)
- Amplifiers (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2262089A DE2262089C3 (de) | 1972-12-19 | 1972-12-19 | Schaltungsanordnung zur elektronischen Frequenzbeeinflussung, insbesondere elektronischer Klangeinsteller |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS4991166A true JPS4991166A (ja) | 1974-08-30 |
JPS5645326B2 JPS5645326B2 (ja) | 1981-10-26 |
Family
ID=5864834
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP13933373A Expired JPS5645326B2 (ja) | 1972-12-19 | 1973-12-15 |
Country Status (6)
Country | Link |
---|---|
US (1) | US3908172A (ja) |
JP (1) | JPS5645326B2 (ja) |
DE (1) | DE2262089C3 (ja) |
FR (1) | FR2210861B1 (ja) |
GB (1) | GB1430618A (ja) |
IT (1) | IT1000521B (ja) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5037401A (ja) * | 1973-06-19 | 1975-04-08 | ||
JPS5296852A (en) * | 1976-02-10 | 1977-08-15 | Matsushita Electric Ind Co Ltd | Dc control circuit for tone quality |
JPS5383555A (en) * | 1976-12-29 | 1978-07-24 | Matsushita Electric Ind Co Ltd | Sound quality adjusting circuit |
JPS53140341U (ja) * | 1977-04-12 | 1978-11-06 | ||
JPS54125547U (ja) * | 1978-02-22 | 1979-09-01 |
Families Citing this family (22)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5722245B2 (ja) * | 1974-12-28 | 1982-05-12 | ||
JPS5533747Y2 (ja) * | 1975-04-14 | 1980-08-11 | ||
US3970868A (en) * | 1975-06-27 | 1976-07-20 | Raytheon Company | Phase comparator |
US4076959A (en) * | 1976-10-08 | 1978-02-28 | General Motors Corporation | Volume, tone and balance control for multi-channel audio systems |
DE2755827A1 (de) * | 1977-12-15 | 1979-06-21 | Philips Patentverwaltung | Schaltungsanordnung mit einem durch eine steuergleichspannung veraenderbaren frequenzgang |
JPS5696519A (en) * | 1979-12-29 | 1981-08-04 | Sony Corp | Tone control circuit |
US4345214A (en) * | 1980-04-23 | 1982-08-17 | Rca Corporation | Variable emitter degeneration gain-controlled amplifier |
DE3024142A1 (de) * | 1980-06-27 | 1982-01-21 | Philips Patentverwaltung Gmbh, 2000 Hamburg | Schaltungsanordnung mit zwei ueber kreuz gekoppelten differenzverstaerkern |
DE3132402A1 (de) * | 1980-10-08 | 1982-05-27 | Philips Patentverwaltung Gmbh, 2000 Hamburg | Schaltungsanordnung mit elektronisch steuerbarem uebertragungsverhalten |
US4413235A (en) * | 1981-02-23 | 1983-11-01 | Motorola, Inc. | Low temperature coefficient logarithmic electronic gain controlled amplifier |
US4560947A (en) * | 1981-05-27 | 1985-12-24 | Frey Douglas R | Monolithic voltage controlled element |
US4471320A (en) * | 1981-05-27 | 1984-09-11 | Frey Douglas R | Voltage controlled element |
US4454478A (en) * | 1981-06-11 | 1984-06-12 | Nippon Gakki Seizo Kabushiki Kaisha | Gain-controlled amplifier |
DE3204217A1 (de) * | 1982-02-08 | 1983-08-18 | Philips Patentverwaltung Gmbh, 2000 Hamburg | Schaltung zur elektronischen verstaerkungsstellung |
US4833422A (en) * | 1987-09-24 | 1989-05-23 | Burr-Brown Corporation | Programmable gain instrumentation amplifier |
US4868516A (en) * | 1988-04-14 | 1989-09-19 | John Fluke Mfg. Co., Inc. | Alternating current amplifier with digitally controlled frequency response |
JPH0286221A (ja) * | 1988-09-22 | 1990-03-27 | Toshiba Corp | 受信機とトーン・コントロール回路 |
US5131046A (en) * | 1989-11-03 | 1992-07-14 | Etymotic Research Inc. | High fidelity hearing aid amplifier |
JP2002043875A (ja) * | 2000-07-24 | 2002-02-08 | Nec Corp | 可変利得増幅器及びそれを備えた電子機器 |
US6798291B2 (en) * | 2002-11-12 | 2004-09-28 | Koninklijke Philips Electronics N.V. | Variable gain current amplifier with a feedback loop including a differential pair |
US6972624B1 (en) * | 2003-08-08 | 2005-12-06 | Linear Technology Corporation | Low-voltage high dynamic range variable-gain amplifier |
US7795972B2 (en) * | 2008-09-04 | 2010-09-14 | Intel Corporation | Automatic gain control apparatus and technique |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS504487A (ja) * | 1973-05-18 | 1975-01-17 |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL291586A (ja) * | 1962-04-20 | |||
GB1014417A (en) * | 1963-05-23 | 1965-12-22 | Rank Bush Murphy Ltd | Electrical signal modifying apparatus |
US3474347A (en) * | 1967-09-26 | 1969-10-21 | Keithley Instruments | Opeational amplifier |
US3684974A (en) * | 1968-01-29 | 1972-08-15 | Motorola Inc | Automatic gain control rf-if amplifier |
DE1288151B (de) * | 1968-03-26 | 1969-01-30 | Telefunken Patent | Elektrischer Verstaerker mit variablem Verstaerkungsgrad und damit gekoppelter Frequenzgangaenderung |
US3731215A (en) * | 1971-08-06 | 1973-05-01 | Gen Electric | Amplifier of controllable gain |
BE789113A (fr) * | 1971-09-23 | 1973-03-22 | Int Standard Electric Corp | Circuit de regulation du gain d'un systeme amplificateur de signaux electriques |
US3727146A (en) * | 1971-12-20 | 1973-04-10 | Us Navy | Linear, voltage variable, temperature stable gain control |
JPS52661B2 (ja) * | 1972-01-11 | 1977-01-10 |
-
1972
- 1972-12-19 DE DE2262089A patent/DE2262089C3/de not_active Expired
-
1973
- 1973-11-29 US US420269A patent/US3908172A/en not_active Expired - Lifetime
- 1973-12-14 GB GB5805973A patent/GB1430618A/en not_active Expired
- 1973-12-15 JP JP13933373A patent/JPS5645326B2/ja not_active Expired
- 1973-12-17 IT IT70727/73A patent/IT1000521B/it active
- 1973-12-18 FR FR7345243A patent/FR2210861B1/fr not_active Expired
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS504487A (ja) * | 1973-05-18 | 1975-01-17 |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5037401A (ja) * | 1973-06-19 | 1975-04-08 | ||
JPS5840367B2 (ja) * | 1973-06-19 | 1983-09-05 | モトロ−ラ インコ−ポレ−テツド | オ−ディオ制御回路 |
JPS5296852A (en) * | 1976-02-10 | 1977-08-15 | Matsushita Electric Ind Co Ltd | Dc control circuit for tone quality |
JPS5923125B2 (ja) * | 1976-02-10 | 1984-05-31 | 松下電器産業株式会社 | 音質の直流制御回路 |
JPS5383555A (en) * | 1976-12-29 | 1978-07-24 | Matsushita Electric Ind Co Ltd | Sound quality adjusting circuit |
JPS53140341U (ja) * | 1977-04-12 | 1978-11-06 | ||
JPS54125547U (ja) * | 1978-02-22 | 1979-09-01 |
Also Published As
Publication number | Publication date |
---|---|
FR2210861B1 (ja) | 1976-11-19 |
US3908172A (en) | 1975-09-23 |
FR2210861A1 (ja) | 1974-07-12 |
DE2262089B2 (de) | 1975-03-06 |
IT1000521B (it) | 1976-04-10 |
DE2262089C3 (de) | 1975-10-30 |
JPS5645326B2 (ja) | 1981-10-26 |
DE2262089A1 (de) | 1974-07-11 |
GB1430618A (en) | 1976-03-31 |