SE8003399L - Ledningskrets - Google Patents

Ledningskrets

Info

Publication number: SE8003399L
Authority: SE; Sweden
Prior art keywords: line; current; amplifier; management circuit; circuit
Prior art date: 1979-05-10

Application number

SE8003399A

Other languages

Unknown language ( )

English (en)

Other versions

SE448663B (sv

Inventor

P Bakker

Original Assignee

Philips Nv

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.)

1979-05-10

Filing date

1980-05-07

Publication date

1980-11-11

1980-05-07 Application filed by Philips Nv filed Critical Philips Nv

1980-11-11 Publication of SE8003399L publication Critical patent/SE8003399L/sv

1987-03-09 Publication of SE448663B publication Critical patent/SE448663B/sv

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
- H04M19/008—Using DC/DC converters

Landscapes

Engineering & Computer Science (AREA)
Signal Processing (AREA)
Interface Circuits In Exchanges (AREA)
Devices For Supply Of Signal Current (AREA)
Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
Amplifiers (AREA)

SE8003399A 1979-05-10 1980-05-07 Ledningskrets SE448663B (sv)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
NL7903664A NL7903664A (nl)	1979-05-10	1979-05-10	Lijncircuit.

Publications (2)

Publication Number	Publication Date
SE8003399L true SE8003399L (sv)	1980-11-11
SE448663B SE448663B (sv)	1987-03-09

Family

ID=19833139

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
SE8003399A SE448663B (sv)	1979-05-10	1980-05-07	Ledningskrets

Country Status (12)

Country	Link
US (1)	US4314106A (sv)
JP (1)	JPS55150659A (sv)
AU (1)	AU533095B2 (sv)
BE (1)	BE883195A (sv)
BR (1)	BR8002805A (sv)
CA (1)	CA1138138A (sv)
CH (1)	CH647906A5 (sv)
DE (1)	DE3017567C2 (sv)
FR (1)	FR2456439B1 (sv)
IT (1)	IT1131452B (sv)
NL (1)	NL7903664A (sv)
SE (1)	SE448663B (sv)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
JPS5637768A (en) *	1979-09-04	1981-04-11	Fujitsu Ltd	Call current supply system
NL8100242A (nl) *	1981-01-20	1982-08-16	Philips Nv	Overspanningsbeveiliging van een lijncircuit.
US4388500A (en) *	1981-02-27	1983-06-14	Wescom, Inc.	Electronic hybrid
US4476351A (en) *	1982-03-25	1984-10-09	Rockwell International Corporation	Subscriber loop current regulator
US5148475A (en) *	1990-04-06	1992-09-15	Harris Corporation	Reduced contact resistance on a SLIC
US5172409A (en) *	1990-07-02	1992-12-15	Motorola, Inc.	Precision FET control loop
US5124586A (en) *	1991-08-16	1992-06-23	Sgs-Thomson Microelectronics, Inc.	Impedance multiplier
KR20000064316A (ko) *	1996-09-03	2000-11-06	요트.게.아. 롤페즈	전자 임피던스 전원 회로
DE102010011486A1 (de) *	2010-03-16	2011-09-22	Bosch Mahle Turbo Systems Gmbh & Co. Kg	Rotor für eine Ladeeinrichtung

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
CH586983A5 (sv) *	1974-12-23	1977-04-15	Ibm
US4004109A (en) *	1975-05-09	1977-01-18	Boxall Frank S	Hybrid circuit
CH599731A5 (sv) *	1976-03-02	1978-05-31	Ibm
US4064377A (en) *	1976-03-11	1977-12-20	Wescom Switching, Inc.	Electronic hybrid and hybrid repeater
US4041252A (en) *	1976-06-07	1977-08-09	North Electric Company	Transformerless two-wire/four-wire hybrid with DC sourcing capability
FR2371840A1 (fr) *	1976-10-04	1978-06-16	Ibm France	Circuit d'interface
US4037065A (en) *	1976-10-04	1977-07-19	The United States Of America As Represented By The Secretary Of The Navy	20 Hz Ringdown solid state two-wire/four-wire converter
GB1583634A (en) *	1977-03-02	1981-01-28	Int Standard Electric Corp	Subscriber line/trunk circuit
US4203012A (en) *	1977-07-14	1980-05-13	Boxall Frank S	Hybrid circuit using current mirror circuits
US4142075A (en) *	1977-10-11	1979-02-27	Burr-Brown Research Corporation	Interface circuit and method for telephone extension lines

1979
- 1979-05-10 NL NL7903664A patent/NL7903664A/nl not_active Application Discontinuation
1980
- 1980-04-21 US US06/142,275 patent/US4314106A/en not_active Expired - Lifetime
- 1980-05-06 AU AU58117/80A patent/AU533095B2/en not_active Ceased
- 1980-05-07 CA CA000351419A patent/CA1138138A/en not_active Expired
- 1980-05-07 JP JP5958280A patent/JPS55150659A/ja active Granted
- 1980-05-07 IT IT21867/80A patent/IT1131452B/it active
- 1980-05-07 SE SE8003399A patent/SE448663B/sv not_active IP Right Cessation
- 1980-05-07 CH CH3564/80A patent/CH647906A5/de not_active IP Right Cessation
- 1980-05-07 BR BR8002805A patent/BR8002805A/pt unknown
- 1980-05-08 DE DE3017567A patent/DE3017567C2/de not_active Expired
- 1980-05-08 BE BE0/200536A patent/BE883195A/fr not_active IP Right Cessation
- 1980-05-09 FR FR8010454A patent/FR2456439B1/fr not_active Expired

Also Published As

Publication number	Publication date
FR2456439B1 (fr)	1987-07-31
AU533095B2 (en)	1983-10-27
CH647906A5 (de)	1985-02-15
AU5811780A (en)	1980-11-13
US4314106A (en)	1982-02-02
IT8021867A0 (it)	1980-05-07
FR2456439A1 (fr)	1980-12-05
DE3017567C2 (de)	1985-02-07
SE448663B (sv)	1987-03-09
BE883195A (fr)	1980-11-10
NL7903664A (nl)	1980-11-12
DE3017567A1 (de)	1980-11-13
CA1138138A (en)	1982-12-21
JPS643387B2 (sv)	1989-01-20
IT1131452B (it)	1986-06-25
JPS55150659A (en)	1980-11-22
BR8002805A (pt)	1980-12-16

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Legal Events

Date	Code	Title	Description
1995-01-31	NAL	Patent in force	Ref document number: 8003399-6 Format of ref document f/p: F
1997-02-03	NUG	Patent has lapsed	Ref document number: 8003399-6 Format of ref document f/p: F

Date

Code

Title

Description

1995-01-31

NAL

Patent in force

Ref document number: 8003399-6

Format of ref document f/p: F

1997-02-03

NUG

Patent has lapsed