DK555686A - Telefonstroemforsyning - Google Patents

Telefonstroemforsyning

Info

Publication number
DK555686A
DK555686A DK555686A DK555686A DK555686A DK 555686 A DK555686 A DK 555686A DK 555686 A DK555686 A DK 555686A DK 555686 A DK555686 A DK 555686A DK 555686 A DK555686 A DK 555686A
Authority
DK
Denmark
Prior art keywords
transistor
supply
power supply
hook
connected via
Prior art date
Application number
DK555686A
Other languages
English (en)
Other versions
DK165614B (da
DK555686D0 (da
DK165614C (da
Inventor
Peter Fred Blomley
Edward John Wemyss Whittaker
Original Assignee
Stc Plc
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.)
Filing date
Publication date
Application filed by Stc Plc filed Critical Stc Plc
Publication of DK555686D0 publication Critical patent/DK555686D0/da
Publication of DK555686A publication Critical patent/DK555686A/da
Publication of DK165614B publication Critical patent/DK165614B/da
Application granted granted Critical
Publication of DK165614C publication Critical patent/DK165614C/da

Links

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

Landscapes

  • Signal Processing (AREA)
  • Engineering & Computer Science (AREA)
  • Devices For Supply Of Signal Current (AREA)
  • Interface Circuits In Exchanges (AREA)
  • Flanged Joints, Insulating Joints, And Other Joints (AREA)
  • Vending Machines For Individual Products (AREA)
  • Solid-Sorbent Or Filter-Aiding Compositions (AREA)
  • Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
  • Filters And Equalizers (AREA)
  • Sub-Exchange Stations And Push- Button Telephones (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)
  • Inorganic Insulating Materials (AREA)
  • Meter Arrangements (AREA)
  • Electric Cable Installation (AREA)
  • Telephone Function (AREA)
DK555686A 1985-11-28 1986-11-20 Telefonstroemforsyning DK165614C (da)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8529348A GB2183964B (en) 1985-11-28 1985-11-28 Telephone power supply
GB8529348 1985-11-28

Publications (4)

Publication Number Publication Date
DK555686D0 DK555686D0 (da) 1986-11-20
DK555686A true DK555686A (da) 1987-05-29
DK165614B DK165614B (da) 1992-12-21
DK165614C DK165614C (da) 1993-05-03

Family

ID=10588936

Family Applications (1)

Application Number Title Priority Date Filing Date
DK555686A DK165614C (da) 1985-11-28 1986-11-20 Telefonstroemforsyning

Country Status (12)

Country Link
US (1) US4748664A (da)
EP (1) EP0225069B1 (da)
JP (1) JPH0795788B2 (da)
AT (1) ATE71483T1 (da)
DE (1) DE3683358D1 (da)
DK (1) DK165614C (da)
ES (1) ES2028789T3 (da)
FI (1) FI85085C (da)
GB (1) GB2183964B (da)
IE (1) IE57578B1 (da)
NZ (1) NZ218248A (da)
PT (1) PT83829B (da)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL8802945A (nl) * 1988-11-30 1990-06-18 Philips Nv Electronisch telefoontoestel.
DE3905031A1 (de) * 1989-02-18 1990-08-23 Bosch Gmbh Robert Schaltungsanordnung fuer eine fernsprechteilnehmerstation
US5381472A (en) * 1990-08-10 1995-01-10 Tamura Electric Works, Ltd. Power source control apparatus for telephone set
US5216710A (en) * 1991-01-07 1993-06-01 Winbond Electronics Corp. Liquid crystal display driver and power supply
US5327493B1 (en) * 1991-05-02 1997-10-14 Active Voice Inc Device for detecting tones on telephone lines
GB2289187B (en) * 1994-04-26 1999-01-20 Motorola Inc Telephone line interface circuit
GB2290674B (en) * 1994-06-20 1999-04-07 Motorola Inc Telephone apparatus for caller ID
US5790653A (en) * 1995-01-06 1998-08-04 Voicewaves, Inc. Line-powered detection of call progress tones
DE69634722T2 (de) * 1995-11-29 2006-01-19 Koninklijke Philips Electronics N.V. Endgerät für ein drahtgebundenes fernmeldesystem
DE19619610A1 (de) * 1996-05-15 1997-11-20 Bosch Gmbh Robert Fernsprechendgerät
WO1998013999A2 (en) * 1996-09-26 1998-04-02 Philips Electronics N.V. Power supply circuit, telecommunication device and method for multiple dc slope power management
US6041114A (en) 1997-03-27 2000-03-21 Active Voice Corporation Telecommute server

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1031882A (en) * 1976-01-12 1978-05-23 Mevhibe G. Sencer Telephone speech network for electronic sidetone suppression
FR2366755A1 (fr) * 1976-07-27 1978-04-28 Cit Alcatel Telealimentation d'un equipement situe a l'extremite d'une ligne telephonique, cote abonne
US4233474A (en) * 1978-01-10 1980-11-11 Nippon Electric Co., Ltd. Telephone transmitter amplifier
DE2931456C2 (de) * 1979-08-02 1982-10-28 Siemens AG, 1000 Berlin und 8000 München Parallelregelschaltung
FR2492187A1 (fr) * 1980-10-15 1982-04-16 Trt Telecom Radio Electr Dispositif destine a alimenter instantanement un circuit de charge connecte a ses bornes de sortie des qu'une source d'alimentation est connectee a ses bornes d'entree
GB2126047A (en) * 1982-08-25 1984-03-14 Philips Electronic Associated Telephone circuit
GB2126052B (en) * 1982-08-25 1985-12-18 Philips Electronic Associated Telephone circuit
US4680789A (en) * 1985-02-26 1987-07-14 U.S. Philips Corporation Audio transmission circuit comprising a transmit amplifier in the form of a line voltage stabilizer

Also Published As

Publication number Publication date
FI864553A (fi) 1987-05-29
ES2028789T3 (es) 1992-07-16
PT83829A (fr) 1986-12-01
DK165614B (da) 1992-12-21
ATE71483T1 (de) 1992-01-15
GB8529348D0 (en) 1986-01-02
DK555686D0 (da) 1986-11-20
IE862984L (en) 1987-05-28
IE57578B1 (en) 1992-12-16
US4748664A (en) 1988-05-31
PT83829B (pt) 1993-01-29
DK165614C (da) 1993-05-03
FI85085C (fi) 1992-02-25
JPS62131657A (ja) 1987-06-13
GB2183964B (en) 1989-10-11
FI85085B (fi) 1991-11-15
EP0225069A2 (en) 1987-06-10
FI864553A0 (fi) 1986-11-10
GB2183964A (en) 1987-06-10
NZ218248A (en) 1989-03-29
DE3683358D1 (de) 1992-02-20
JPH0795788B2 (ja) 1995-10-11
EP0225069B1 (en) 1992-01-08
EP0225069A3 (en) 1988-07-20

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Legal Events

Date Code Title Description
PBP Patent lapsed