NL164715C - Versterker met variabele versterking. - Google Patents

Versterker met variabele versterking.

Info

Publication number: NL164715C
Authority: NL; Netherlands
Prior art keywords: amplifier; variable gain; gain; variable
Prior art date: 1974-08-14

Application number

NL7509655.A

Other languages

English (en)

Other versions

NL164715B (nl

NL7509655A (nl

Original Assignee

Western Electric Co

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.)

1974-08-14

Filing date

1975-08-13

Publication date

1981-01-15

1975-08-13 Application filed by Western Electric Co filed Critical Western Electric Co

1976-02-17 Publication of NL7509655A publication Critical patent/NL7509655A/nl

1980-08-15 Publication of NL164715B publication Critical patent/NL164715B/nl

1981-01-15 Application granted granted Critical

1981-01-15 Publication of NL164715C publication Critical patent/NL164715C/nl

Links

Classifications

- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
- H03F3/45—Differential amplifiers
- H03F3/45071—Differential amplifiers with semiconductor devices only
- H03F3/45076—Differential amplifiers with semiconductor devices only characterised by the way of implementation of the active amplifying circuit in the differential amplifier
- H03F3/45475—Differential amplifiers with semiconductor devices only characterised by the way of implementation of the active amplifying circuit in the differential amplifier using IC blocks as the active amplifying circuit
- 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
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03G—CONTROL OF AMPLIFICATION
- H03G7/00—Volume compression or expansion in amplifiers
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03G—CONTROL OF AMPLIFICATION
- H03G7/00—Volume compression or expansion in amplifiers
- H03G7/06—Volume compression or expansion in amplifiers having semiconductor devices
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/62—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission for providing a predistortion of the signal in the transmitter and corresponding correction in the receiver, e.g. for improving the signal/noise ratio
- H04B1/64—Volume compression or expansion arrangements

Landscapes

Engineering & Computer Science (AREA)
Power Engineering (AREA)
Multimedia (AREA)
Computer Networks & Wireless Communication (AREA)
Signal Processing (AREA)
Tone Control, Compression And Expansion, Limiting Amplitude (AREA)
Control Of Amplification And Gain Control (AREA)
Amplifiers (AREA)
Reduction Or Emphasis Of Bandwidth Of Signals (AREA)

NL7509655.A 1974-08-14 1975-08-13 Versterker met variabele versterking. NL164715C (nl)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
US497136A US3919654A (en)	1974-08-14	1974-08-14	Syllabic compandor

Publications (3)

Publication Number	Publication Date
NL7509655A NL7509655A (nl)	1976-02-17
NL164715B NL164715B (nl)	1980-08-15
NL164715C true NL164715C (nl)	1981-01-15

Family

ID=23975615

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
NL7509655.A NL164715C (nl)	1974-08-14	1975-08-13	Versterker met variabele versterking.

Country Status (10)

Country	Link
US (1)	US3919654A (nl)
JP (1)	JPS5831044B2 (nl)
BE (1)	BE832350A (nl)
CA (1)	CA1025364A (nl)
DE (1)	DE2535695C3 (nl)
FR (1)	FR2282189A1 (nl)
GB (1)	GB1513828A (nl)
IT (1)	IT1041568B (nl)
NL (1)	NL164715C (nl)
SE (1)	SE415135B (nl)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US4471324A (en) *	1982-01-19	1984-09-11	Dbx, Inc.	All NPN variably controlled amplifier
JPS59140727A (ja) *	1983-01-31	1984-08-13	Fujitsu Ltd	周波数変換方式
US4789799A (en) *	1983-04-05	1988-12-06	Tektronix, Inc.	Limiting circuit
FR2618622B1 (fr) *	1987-07-21	1994-05-20	Thomson Semiconducteurs	Circuit compresseur de signal, en particulier pour appareil telephonique
US4987383A (en) *	1988-10-13	1991-01-22	Siemens Aktiengesellschaft	Integrated compression amplifier having programmable threshold voltage
JPH0821819B2 (ja) *	1990-08-30	1996-03-04	三洋電機株式会社	増幅回路
US5079517A (en) *	1991-02-04	1992-01-07	Motorola, Inc.	Circuit for DC control of a compressor
US5148119A (en) *	1991-03-22	1992-09-15	Linear Technology Corporation	Precise reference voltage generator for feedforward compensated amplifiers
US5117199A (en) *	1991-03-27	1992-05-26	International Business Machines Corporation	Fully differential follower using operational amplifier
JP2661404B2 (ja) *	1991-05-21	1997-10-08	日本電気株式会社	携帯電話装置
US5631968A (en) *	1995-06-06	1997-05-20	Analog Devices, Inc.	Signal conditioning circuit for compressing audio signals
US5757230A (en) *	1996-05-28	1998-05-26	Analog Devices, Inc.	Variable gain CMOS amplifier
US6441686B1 (en) *	1999-06-04	2002-08-27	Analog Devices, Inc.	Offset correction method and apparatus
JP4076858B2 (ja) *	2001-01-10	2008-04-16	コーニンクレッカフィリップスエレクトロニクスエヌヴィ	全差動可変利得増幅器および多次元増幅器構成
US6614300B2 (en) *	2001-08-27	2003-09-02	Nokia Corporation	Dual current mirror power amplifier bias control

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US2179414A (en) *	1937-05-25	1939-11-07	Philco Radio & Television Corp	Contrast amplifier
US2576145A (en) *	1945-12-06	1951-11-27	Int Standard Electric Corp	Volume expansion system for audio and like amplifiers
US2903522A (en) *	1955-07-07	1959-09-08	Gen Precision Lab Inc	Transistor amplifier
FR1508391A (fr) *	1966-11-25	1968-01-05	Montages Electr Atel	Amplificateur à niveau de sortie stabilisé
US3581223A (en) *	1969-04-30	1971-05-25	Hc Electronics Inc	Fast response dynamic gain control circuit
US3550028A (en) *	1969-07-28	1970-12-22	Spectra Sonics	Compressor-limiter circuit
US3676789A (en) *	1970-11-16	1972-07-11	Derek Bray	Low distortion agc amplifier
US3727146A (en) *	1971-12-20	1973-04-10	Us Navy	Linear, voltage variable, temperature stable gain control

1974
- 1974-08-14 US US497136A patent/US3919654A/en not_active Expired - Lifetime
1975
- 1975-06-11 CA CA229,073A patent/CA1025364A/en not_active Expired
- 1975-08-05 SE SE7508830A patent/SE415135B/xx not_active IP Right Cessation
- 1975-08-09 DE DE2535695A patent/DE2535695C3/de not_active Expired
- 1975-08-12 BE BE159131A patent/BE832350A/xx not_active IP Right Cessation
- 1975-08-12 GB GB33482/75A patent/GB1513828A/en not_active Expired
- 1975-08-13 FR FR7525262A patent/FR2282189A1/fr active Granted
- 1975-08-13 IT IT69085/75A patent/IT1041568B/it active
- 1975-08-13 NL NL7509655.A patent/NL164715C/nl not_active IP Right Cessation
- 1975-08-14 JP JP50098150A patent/JPS5831044B2/ja not_active Expired

Also Published As

Publication number	Publication date
FR2282189A1 (fr)	1976-03-12
FR2282189B1 (nl)	1977-12-16
DE2535695B2 (de)	1979-06-13
CA1025364A (en)	1978-01-31
NL164715B (nl)	1980-08-15
SE415135B (sv)	1980-09-08
GB1513828A (en)	1978-06-14
SE7508830L (sv)	1976-02-16
BE832350A (fr)	1975-12-01
JPS5831044B2 (ja)	1983-07-04
IT1041568B (it)	1980-01-10
NL7509655A (nl)	1976-02-17
DE2535695A1 (de)	1976-03-04
US3919654A (en)	1975-11-11
AU8387975A (en)	1977-02-17
DE2535695C3 (de)	1985-08-01
JPS5144858A (nl)	1976-04-16

Legal Events

Date	Code	Title	Description
1995-10-02	V4	Lapsed because of reaching the maximum lifetime of a patent	Free format text: 950814

Publication	Publication Date	Title
NL7415986A (nl)	1975-08-25	Versterker.
NL7512679A (nl)	1976-05-04	Versterker.
NL189104C (nl)	1993-01-04	Transistorversterker.
IT1043589B (it)	1980-02-29	Amplificatore
SE403869B (sv)	1978-09-04	Forsterkare med variabel forsterkning
NL7410080A (nl)	1976-01-28	Balansversterker.
NL166162C (nl)	1981-06-15	Versterkerschakeling met regelbare versterking.
NL164715C (nl)	1981-01-15	Versterker met variabele versterking.
NL7508599A (nl)	1976-01-20	Fotostroomversterker.
NL7400508A (nl)	1975-07-17	Trekker.
NL7508745A (nl)	1976-04-27	Versterker.
NL7501624A (nl)	1975-08-18	Versterkerbesturingsschakeling.
NL7502383A (nl)	1975-09-03	Spanningsversterker.
NL7513950A (nl)	1976-06-01	Ladinggekoppelde versterker.
NL7410394A (nl)	1975-02-11	Stroomversterker.
NL7410526A (nl)	1975-02-17	Versterker met terugkoppeling.
NL7505983A (nl)	1975-11-25	Transistorversterker.
NL7409507A (nl)	1975-01-22	Stroomversterker.
NL7408500A (nl)	1975-12-30	Trekker.
NL189586C (nl)	1993-05-17	Versterker met regelbare versterkingsfactor.
NL7409191A (nl)	1976-01-12	Verschilversterker.
NL7503995A (nl)	1975-10-07	Versterkingsregelschakeling.
NL7409851A (nl)	1976-01-26	Versterkerschakeling.
SE7505840L (sv)	1975-11-25	Tryckforsterkare.
NL7505984A (nl)	1975-11-25	Transistorversterker.