NL7709578A - TELEPHONE LINE SWITCH. - Google Patents

TELEPHONE LINE SWITCH.

Info

Publication number: NL7709578A
Authority: NL; Netherlands
Prior art keywords: telephone line; line switch; switch; telephone; line
Prior art date: 1976-09-03

Application number

NL7709578A

Other languages

Dutch (nl)

Original Assignee

Thomson Csf

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.)

1976-09-03

Filing date

1977-08-31

Publication date

1978-03-07

1977-08-31 Application filed by Thomson Csf filed Critical Thomson Csf

1978-03-07 Publication of NL7709578A publication Critical patent/NL7709578A/en

Classifications

- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M19/00—Current supply arrangements for telephone systems
- H04M19/001—Current supply source at the exchanger providing current to substations
- H04M19/005—Feeding arrangements without the use of line transformers

Landscapes

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

NL7709578A 1976-09-03 1977-08-31 TELEPHONE LINE SWITCH. NL7709578A (en)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
FR7626614A FR2363952A1 (en)	1976-09-03	1976-09-03	TELEPHONE LINE CIRCUIT

Publications (1)

Publication Number	Publication Date
NL7709578A true NL7709578A (en)	1978-03-07

Family

ID=9177355

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
NL7709578A NL7709578A (en)	1976-09-03	1977-08-31	TELEPHONE LINE SWITCH.

Country Status (8)

Country	Link
JP (1)	JPS5332605A (en)
BE (1)	BE858262A (en)
DE (1)	DE2739718A1 (en)
FR (1)	FR2363952A1 (en)
GB (1)	GB1530089A (en)
IT (1)	IT1084094B (en)
NL (1)	NL7709578A (en)
SE (1)	SE7709758L (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
JPS5531358A (en) *	1978-08-28	1980-03-05	Nec Corp	Subscriber circuit
JPS5537046A (en) *	1978-09-06	1980-03-14	Nec Corp	Subscriber's circuit
FR2437123A1 (en) *	1978-09-19	1980-04-18	Thomson Ericsson Telephones So	Electronic power supply for telephone lines - comprises operational amplifier with feedback followed by transistor stage
NL7810086A (en) *	1978-10-06	1980-04-09	Philips Nv	POWER BRIDGE FOR A SUBSCRIBER FLOW.
JPS5593392A (en) *	1979-01-10	1980-07-15	Nec Corp	Subscriber circuit
NL7904159A (en) *	1979-05-28	1980-12-02	Philips Nv	DEVICE FOR SUPPLYING SIGNALS TO A TELEPHONE LINE.

1976
- 1976-09-03 FR FR7626614A patent/FR2363952A1/en active Granted
1977
- 1977-08-31 NL NL7709578A patent/NL7709578A/en not_active Application Discontinuation
- 1977-08-31 SE SE7709758A patent/SE7709758L/en unknown
- 1977-08-31 BE BE180557A patent/BE858262A/en unknown
- 1977-08-31 IT IT50829/77A patent/IT1084094B/en active
- 1977-08-31 GB GB36417/77A patent/GB1530089A/en not_active Expired
- 1977-09-02 DE DE19772739718 patent/DE2739718A1/en active Pending
- 1977-09-02 JP JP10598077A patent/JPS5332605A/en active Pending

Also Published As

Publication number	Publication date
GB1530089A (en)	1978-10-25
FR2363952A1 (en)	1978-03-31
JPS5332605A (en)	1978-03-28
BE858262A (en)	1977-12-16
IT1084094B (en)	1985-05-25
SE7709758L (en)	1978-03-04
FR2363952B1 (en)	1981-09-25
DE2739718A1 (en)	1978-03-09

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Legal Events

Date	Code	Title	Description
1982-04-01	BV	The patent application has lapsed