BE565493A - - Google Patents

Info

Publication number: BE565493A
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.)

1957-09-17

Publication of BE565493A publication Critical patent/BE565493A/xx

Classifications

- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M19/00—Current supply arrangements for telephone systems
- H04M19/08—Current supply arrangements for telephone systems with current supply sources at the substations
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/738—Interface circuits for coupling substations to external telephone lines
- H04M1/76—Compensating for differences in line impedance

Landscapes

Engineering & Computer Science (AREA)
Signal Processing (AREA)
Devices For Supply Of Signal Current (AREA)
Interface Circuits In Exchanges (AREA)

BE565493D 1957-09-17 BE565493A (cs)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
SE361033X		1957-09-17

Publications (1)

Publication Number	Publication Date
BE565493A true BE565493A (cs)

Family

ID=20308921

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
BE565493D BE565493A (cs)	1957-09-17

Country Status (7)

Country	Link
US (1)	US3027428A (cs)
BE (1)	BE565493A (cs)
CH (1)	CH361033A (cs)
DE (1)	DE1102816B (cs)
FR (1)	FR1199271A (cs)
GB (1)	GB830818A (cs)
NL (1)	NL225553A (cs)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
NL259106A (cs) *	1959-12-18
DE1155171B (de) *	1961-03-25	1963-10-03	Standard Elektrik Lorenz Ag	Schaltungsanordnung fuer die Pegelregelung bei Fernsprechstationen mit Sprech- und/oder Hoerverstaerkern
US3531594A (en) *	1968-08-05	1970-09-29	Nathaniel Dickerson	Two-wire multiunit intercom system
US3784755A (en) *	1971-09-07	1974-01-08	Bell Canada Northern Electric	Long-line telephone circuit
CH654705A5 (de) *	1982-04-27	1986-02-28	Autelca Ag	Schaltungsanordnung fuer einen muenzfernsprecher.
US4488006A (en) *	1982-07-01	1984-12-11	At&T Bell Laboratories	Apparatus for controlling the application of telephone line power in a telephone set
FR2533097A1 (fr) *	1982-09-13	1984-03-16	Gesi	Controleur de ligne telephonique destine a cooperer avec un automate
GB2142509A (en) *	1983-06-28	1985-01-16	Emhart Ind	Audio amplifier
FR2557396A1 (fr) *	1983-11-15	1985-06-28	Gesi	Alimentation a haute impedance pour circuit electronique alimente par une ligne de telephone
CA1285494C (en) *	1987-07-10	1991-07-02	Newbridge Networks Corporation	Paging system

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE678081C (de) *	1932-05-15	1939-07-08	Westinghouse Cooper Hewitt Ges	Anordnung zur Aufrechterhaltung der Spannung in Gleichrichterschaltungen
DE683580C (de) *	1936-10-29	1939-11-09	Siemens & Halske Akt Ges	Batterielose, netzgespeiste Stromversorgungseinrichtung
DE887222C (de) *	1945-02-01	1953-08-20	Aeg	Verfahren zur Stromversorgung fuer Verstaerkereinrichtungen bei Fernsprechstellen
US2785231A (en) *	1954-02-25	1957-03-12	Bell Telephone Labor Inc	Telephone set with amplifier
US2801288A (en) *	1956-03-29	1957-07-30	Bell Telephone Labor Inc	Equalizing circuit

0
- BE BE565493D patent/BE565493A/xx unknown
- NL NL225553D patent/NL225553A/xx unknown
1957
- 1957-12-26 US US705359A patent/US3027428A/en not_active Expired - Lifetime
- 1957-12-28 FR FR1199271D patent/FR1199271A/fr not_active Expired
- 1957-12-30 GB GB40335/57A patent/GB830818A/en not_active Expired
1958
- 1958-01-27 DE DES56736A patent/DE1102816B/de active Pending
- 1958-03-08 CH CH361033D patent/CH361033A/de unknown

Also Published As

Publication number	Publication date
FR1199271A (fr)	1959-12-11
DE1102816B (de)	1961-03-23
US3027428A (en)	1962-03-27
NL225553A (cs)
CH361033A (de)	1962-03-31
GB830818A (en)	1960-03-23

Publication	Publication Date	Title
AT218824B (cs)	1961-12-27
AT205766B (cs)	1959-10-10
AT215742B (cs)	1961-06-26
AT213752B (cs)	1961-02-27
BE565725A (cs)	1958-03-31
NL111823C (cs)
BE563817A (cs)
BE568073A (cs)
BE567727A (cs)
NL225553A (cs)
BE563653A (cs)
BE563239A (cs)
BE562985A (cs)
BE562757A (cs)
BE562387A (cs)
BE567175A (cs)	1958-10-28
BE561073A (cs)
BE560755A (cs)
BE560387A (cs)	1957-09-14
BE558042A (cs)
BE555512A (cs)
BE553769A (cs)
BE564096A (cs)
BE567160A (cs)
BE566583A (cs)