BE505008A - - Google Patents

Info

Publication number: BE505008A
Authority: BE; Belgium

Application number

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.)

1950-08-02

Publication of BE505008A publication Critical patent/BE505008A/xx

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
- H03G1/0082—Circuits characterised by the type of controlling devices operated by a controlling current or voltage signal using continuously variable impedance elements using bipolar transistor-type devices
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
- H03F1/34—Negative-feedback-circuit arrangements with or without positive feedback
- H03F1/36—Negative-feedback-circuit arrangements with or without positive feedback in discharge-tube amplifiers
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
- H03F3/181—Low-frequency amplifiers, e.g. audio preamplifiers
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
- H03F3/26—Push-pull amplifiers; Phase-splitters therefor
- H03F3/28—Push-pull amplifiers; Phase-splitters therefor with tubes only
- 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
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B3/00—Line transmission systems
- H04B3/02—Details
- H04B3/04—Control of transmission; Equalising
- H04B3/10—Control of transmission; Equalising by pilot signal

Landscapes

Engineering & Computer Science (AREA)
Power Engineering (AREA)
Multimedia (AREA)
Computer Networks & Wireless Communication (AREA)
Signal Processing (AREA)
Amplifiers (AREA)
Monitoring And Testing Of Transmission In General (AREA)
Radio Relay Systems (AREA)

BE505008D 1950-08-02 BE505008A (pt)

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
NL700129X		1950-08-02
GB5695/55A GB764175A (en)	1950-08-02	1955-02-25	Improvements in or relating to safe-guarding arrangements for electric communicationsystems

Publications (1)

Publication Number	Publication Date
BE505008A true BE505008A (pt)

Family

ID=26240078

Family Applications (3)

Application Number	Title	Priority Date	Filing Date
BE505025D BE505025A (pt)	1950-08-02
BE544533D BE544533A (pt)	1950-08-02
BE505008D BE505008A (pt)	1950-08-02

Family Applications Before (2)

Application Number	Title	Priority Date	Filing Date
BE505025D BE505025A (pt)	1950-08-02
BE544533D BE544533A (pt)	1950-08-02

Country Status (6)

Country	Link
US (2)	US2740850A (pt)
BE (3)	BE505008A (pt)
DE (3)	DE972713C (pt)
FR (7)	FR981784A (pt)
GB (3)	GB672169A (pt)
NL (2)	NL78172C (pt)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US3029317A (en) *	1956-09-28	1962-04-10	Rca Corp	Frequency selective negative feedback recording circuitry
US3047815A (en) *	1959-07-03	1962-07-31	Gen Electric	Phase component eliminator
GB886257A (en) *	1959-10-29	1962-01-03	John Somerset Murray	Valve amplifier
US3178698A (en) *	1960-09-14	1965-04-13	Bell Telephone Labor Inc	Regulator alarm circuit
US3328716A (en) *	1963-09-03	1967-06-27	Automatic Elect Lab	Gain regulation circuit utilizing electrochemical memory means in variolosser control circuit
US3359511A (en) *	1964-11-04	1967-12-19	Ampex	Automatic gain control system with pilot signal
AU407352B2 (en) *	1965-12-29	1970-10-15		Improvements in automatic gain regulators
US3763434A (en) *	1972-03-02	1973-10-02	Motorola Inc	Battery connecting structure for portable device
US4287477A (en) *	1979-02-22	1981-09-01	Dynamic Compliance, Incorporated	Feedback arrangement
US5742202A (en) *	1996-05-31	1998-04-21	Scientific-Atlanta, Inc.	Method and apparatus for dynamic automatic gain control when pilot signal is lost

Family Cites Families (19)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US1984400A (en) *	1928-04-26	1934-12-18	Rca Corp	Sensitivity control for radio receiving systems
US1822758A (en) *	1928-09-21	1931-09-08	Toulon Pierre Marie Gabriel	System for transmitting and amplifying vibratory currents and movements
US1859498A (en) *	1928-10-02	1932-05-24	American Telephone & Telegraph	Vacuum tube control system
US1811954A (en) *	1928-12-17	1931-06-30	American Telephone & Telegraph	Transmission volume control
DE584781C (de) *	1930-03-06	1933-09-23	Aeg	Elektrodynamischer Lautsprecher
US1949848A (en) *	1930-08-04	1934-03-06	Rca Corp	Radioreceiver
GB413383A (en) *	1933-01-25	1934-07-19	Leonard Ernest Ryall	Variable attenuation networks capable of providing automatic volume control of alternating signal currents
DE657057C (de) *	1933-08-31	1938-02-24	Siemens & Halske Akt Ges	Anordnung zur Regelung des UEbertragungsmasses in Signaluebertragungssystemen
GB438565A (en) *	1934-05-26	1935-11-19	Standard Telephones Cables Ltd	Thermionic valve circuits
NL43890C (pt) *	1935-01-05
GB456062A (en) *	1935-03-28	1936-10-28	Frederick Gordon Frost	Improvements in and relating to circuits for use with thermionic valves
US2220770A (en) *	1937-01-30	1940-11-05	Gen Electric	Apparatus for controlling the apparent resistance of an amplifier anode
AT159204B (de) *	1938-02-26	1940-07-25	Siemens Ag	Verfahren und Anordnung zur Erfassung oder Beeinflussung der Bewegungsvorgänge in dynamischen Lautsprechern.
US2365575A (en) *	1941-12-31	1944-12-19	Gen Electric	Electron discharge amplifier
US2383867A (en) *	1943-01-13	1945-08-28	Rca Corp	Power output amplifier circuit
US2379069A (en) *	1943-07-24	1945-06-26	Bell Telephone Labor Inc	Automatic line testing and switching circuits
US2396990A (en) *	1943-12-09	1946-03-19	Bell Telephone Labor Inc	Automatic line testing and switching circuits
GB673258A (en) *	1949-05-28	1952-06-04	Rca Corp	Improvements in signal amplitude control systems employing semi-conductor devices
GB693255A (en) *	1951-04-12	1953-06-24	Automatic Telephone & Elect	Improvements in or relating to carrier current transmission systems

0
- NL NL696908332A patent/NL155159B/xx unknown
- BE BE505025D patent/BE505025A/xx unknown
- NL NL78172D patent/NL78172C/xx active
- BE BE544533D patent/BE544533A/xx unknown
- BE BE505008D patent/BE505008A/xx unknown
1949
- 1949-02-25 FR FR981784D patent/FR981784A/fr not_active Expired
1950
- 1950-07-28 GB GB18892/50A patent/GB672169A/en not_active Expired
1951
- 1951-07-26 FR FR61930D patent/FR61930E/fr not_active Expired
- 1951-07-26 FR FR64203D patent/FR64203E/fr not_active Expired
- 1951-07-27 GB GB17856/51A patent/GB700129A/en not_active Expired
- 1951-07-30 US US239213A patent/US2740850A/en not_active Expired - Lifetime
- 1951-08-01 DE DEI4440A patent/DE972713C/de not_active Expired
- 1951-08-02 FR FR64204D patent/FR64204E/fr not_active Expired
1955
- 1955-02-25 GB GB5695/55A patent/GB764175A/en not_active Expired
- 1955-05-20 FR FR67870D patent/FR67870E/fr not_active Expired
1956
- 1956-01-13 DE DEJ11173A patent/DE1108277B/de active Pending
- 1956-01-19 FR FR70706D patent/FR70706E/fr not_active Expired
- 1956-02-23 US US567377A patent/US2921267A/en not_active Expired - Lifetime
- 1956-02-24 DE DEI11337A patent/DE1027730B/de active Pending
- 1956-02-24 FR FR71323D patent/FR71323E/fr not_active Expired

Also Published As

Publication number	Publication date
NL155159B (nl)
DE972713C (de)	1959-09-10
GB672169A (en)	1952-05-14
FR70706E (fr)	1959-06-10
GB700129A (en)	1953-11-25
US2921267A (en)	1960-01-12
DE1108277B (de)	1961-06-08
FR981784A (fr)	1951-05-30
FR64203E (fr)	1955-11-09
FR64204E (fr)	1955-11-09
BE505025A (pt)
FR71323E (fr)	1959-12-22
NL78172C (pt)
BE544533A (pt)
FR61930E (fr)	1955-05-31
DE1027730B (de)	1958-04-10
FR67870E (fr)	1958-03-25
GB764175A (en)	1956-12-19
US2740850A (en)	1956-04-03

Publication	Publication Date	Title
FR955698A (pt)	1950-01-18
FR955307A (pt)	1950-01-14
FR955933A (pt)	1950-01-20
FR955433A (pt)	1950-01-14
AT195820B (pt)	1958-02-25
AT165408B (pt)	1950-02-25
BE493329A (pt)
BE495131A (pt)	1950-08-01
BE442233A (pt)
BE461301A (pt)
BE465350A (pt)
BE471217A (pt)
BE515133A (pt)
BE365921A (pt)
BE474353A (pt)
BE506783A (pt)
BE544533A (pt)
BE493509A (pt)
BE486021A (pt)
BE489017A (pt)
BE493326A (pt)
BE493328A (pt)
BE493522A (pt)
BE493351A (pt)
BE493362A (pt)