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

BE505008D 1950-08-02 BE505008A (US06252093-20010626-C00008.png)

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 (US06252093-20010626-C00008.png)

Family

ID=26240078

Family Applications (3)

Application Number	Title	Priority Date	Filing Date
BE544533D BE544533A (US06252093-20010626-C00008.png)	1950-08-02
BE505025D BE505025A (US06252093-20010626-C00008.png)	1950-08-02
BE505008D BE505008A (US06252093-20010626-C00008.png)	1950-08-02

Family Applications Before (2)

Application Number	Title	Priority Date	Filing Date
BE544533D BE544533A (US06252093-20010626-C00008.png)	1950-08-02
BE505025D BE505025A (US06252093-20010626-C00008.png)	1950-08-02

Country Status (6)

Country	Link
US (2)	US2740850A (US06252093-20010626-C00008.png)
BE (3)	BE505008A (US06252093-20010626-C00008.png)
DE (3)	DE972713C (US06252093-20010626-C00008.png)
FR (7)	FR981784A (US06252093-20010626-C00008.png)
GB (3)	GB672169A (US06252093-20010626-C00008.png)
NL (2)	NL78172C (US06252093-20010626-C00008.png)

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 (US06252093-20010626-C00008.png) *	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
- BE BE544533D patent/BE544533A/xx unknown
- NL NL696908332A patent/NL155159B/xx unknown
- NL NL78172D patent/NL78172C/xx active
- BE BE505025D patent/BE505025A/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 FR64203D patent/FR64203E/fr not_active Expired
- 1951-07-26 FR FR61930D patent/FR61930E/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 FR FR71323D patent/FR71323E/fr not_active Expired
- 1956-02-24 DE DEI11337A patent/DE1027730B/de active Pending

Also Published As

Publication number	Publication date
GB672169A (en)	1952-05-14
DE1027730B (de)	1958-04-10
NL155159B (nl)
NL78172C (US06252093-20010626-C00008.png)
FR70706E (fr)	1959-06-10
FR981784A (fr)	1951-05-30
US2740850A (en)	1956-04-03
FR64204E (fr)	1955-11-09
BE505025A (US06252093-20010626-C00008.png)
DE1108277B (de)	1961-06-08
US2921267A (en)	1960-01-12
DE972713C (de)	1959-09-10
BE544533A (US06252093-20010626-C00008.png)
FR64203E (fr)	1955-11-09
FR67870E (fr)	1958-03-25
GB700129A (en)	1953-11-25
GB764175A (en)	1956-12-19
FR61930E (fr)	1955-05-31
FR71323E (fr)	1959-12-22

Publication	Publication Date	Title
FR955698A (US06252093-20010626-C00008.png)	1950-01-18
FR955933A (US06252093-20010626-C00008.png)	1950-01-20
AT165408B (US06252093-20010626-C00008.png)	1950-02-25
AT195820B (US06252093-20010626-C00008.png)	1958-02-25
BE505025A (US06252093-20010626-C00008.png)
BE494643A (US06252093-20010626-C00008.png)
BE494655A (US06252093-20010626-C00008.png)
BE494864A (US06252093-20010626-C00008.png)	1950-07-17
BE494875A (US06252093-20010626-C00008.png)
BE494893A (US06252093-20010626-C00008.png)	1950-07-17
BE494949A (US06252093-20010626-C00008.png)
BE442233A (US06252093-20010626-C00008.png)
BE474353A (US06252093-20010626-C00008.png)
BE471217A (US06252093-20010626-C00008.png)
BE465350A (US06252093-20010626-C00008.png)
BE502836A (US06252093-20010626-C00008.png)
BE461301A (US06252093-20010626-C00008.png)
BE506783A (US06252093-20010626-C00008.png)
BE493420A (US06252093-20010626-C00008.png)
BE493367A (US06252093-20010626-C00008.png)	1950-05-16
BE325830A (US06252093-20010626-C00008.png)
BE502924A (US06252093-20010626-C00008.png)
BE493380A (US06252093-20010626-C00008.png)
BE493522A (US06252093-20010626-C00008.png)
BE501888A (US06252093-20010626-C00008.png)