SE8003419L - Forsterkare i linjekrets - Google Patents

Forsterkare i linjekrets

Info

Publication number
SE8003419L
SE8003419L SE8003419D SE8003419D SE8003419L SE 8003419 L SE8003419 L SE 8003419L SE 8003419 D SE8003419 D SE 8003419D SE 8003419 D SE8003419 D SE 8003419D SE 8003419 L SE8003419 L SE 8003419L
Authority
SE
Sweden
Prior art keywords
amplifier
line circuit
circuit
line
Prior art date
Application number
SE8003419D
Other languages
English (en)
Inventor
Mil J F P Van
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.)
Filing date
Publication date
Application filed by Philips Nv filed Critical Philips Nv
Publication of SE8003419L publication Critical patent/SE8003419L/sv

Links

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
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/20—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers
    • H03F3/21—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers with semiconductor devices only
    • H03F3/213—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers with semiconductor devices only in integrated circuits

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Signal Processing (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Amplifiers (AREA)
  • Devices For Supply Of Signal Current (AREA)
  • Interface Circuits In Exchanges (AREA)
SE8003419D 1979-05-10 1980-05-07 Forsterkare i linjekrets SE8003419L (sv)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL7903663A NL7903663A (nl) 1979-05-10 1979-05-10 Versterker voor toepassing in een lijncircuit.

Publications (1)

Publication Number Publication Date
SE8003419L true SE8003419L (sv) 1980-11-11

Family

ID=19833138

Family Applications (2)

Application Number Title Priority Date Filing Date
SE8003419A SE446798B (sv) 1979-05-10 1980-05-07 Forsterkare for anvendning bl a i en abonnentlinjekrets
SE8003419D SE8003419L (sv) 1979-05-10 1980-05-07 Forsterkare i linjekrets

Family Applications Before (1)

Application Number Title Priority Date Filing Date
SE8003419A SE446798B (sv) 1979-05-10 1980-05-07 Forsterkare for anvendning bl a i en abonnentlinjekrets

Country Status (11)

Country Link
US (1) US4340869A (sv)
JP (1) JPS55151852A (sv)
AU (1) AU543026B2 (sv)
BE (1) BE883194A (sv)
CA (1) CA1151331A (sv)
DE (1) DE3017566C2 (sv)
FR (1) FR2456431A1 (sv)
GB (1) GB2050762B (sv)
IT (1) IT1131453B (sv)
NL (1) NL7903663A (sv)
SE (2) SE446798B (sv)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2135854B (en) * 1983-02-10 1986-04-23 Robert James Redding Line-powered modem
NL8403549A (nl) * 1984-11-22 1986-06-16 Philips Nv Versterkerschakeling.
FR2637752A1 (fr) * 1988-10-07 1990-04-13 Radiotechnique Compelec Dispositif de limitation de courant de ligne pour terminal telephonique
SE507740C2 (sv) 1996-11-08 1998-07-06 Ericsson Telefon Ab L M Förfarande och anordning för avledning av effekt

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3304513A (en) * 1959-02-02 1967-02-14 Franklin F Offner Differential direct-current amplifier
DE2159095C3 (de) * 1971-11-29 1985-01-24 Felten & Guilleaume Fernmeldeanlagen GmbH, 8500 Nürnberg In der Verstärkung einstellbarer mehrstufiger Verstärker mit niederohmigem Eingangs- und Ausgangswiderstand
US3896393A (en) * 1973-12-26 1975-07-22 Motorola Inc Monolithic power amplifier capable of operating class a and class ab
CH586983A5 (sv) * 1974-12-23 1977-04-15 Ibm
US4064377A (en) * 1976-03-11 1977-12-20 Wescom Switching, Inc. Electronic hybrid and hybrid repeater
FR2371840A1 (fr) * 1976-10-04 1978-06-16 Ibm France Circuit d'interface
GB1527293A (en) * 1977-04-21 1978-10-04 Garwell K Composite collector load for class a semiconductor amplifier
US4211896A (en) * 1977-10-17 1980-07-08 Telecommunications Radioelectrique Et Telephoniques T.R.T. Subscriber's circuit with a symmetrical amplifier
FR2406357A1 (fr) * 1977-10-17 1979-05-11 Trt Telecom Radio Electr Joncteur d'abonne telephonique
US4268798A (en) * 1977-12-19 1981-05-19 Motorola, Inc. High performance summing amplifier

Also Published As

Publication number Publication date
DE3017566A1 (de) 1980-11-13
GB2050762A (en) 1981-01-07
IT8021868A0 (it) 1980-05-07
NL7903663A (nl) 1980-11-12
JPS55151852A (en) 1980-11-26
CA1151331A (en) 1983-08-02
IT1131453B (it) 1986-06-25
US4340869A (en) 1982-07-20
FR2456431A1 (fr) 1980-12-05
JPS6333755B2 (sv) 1988-07-06
AU5811880A (en) 1980-11-13
BE883194A (fr) 1980-11-10
DE3017566C2 (de) 1985-10-10
AU543026B2 (en) 1985-03-28
SE446798B (sv) 1986-10-06
FR2456431B1 (sv) 1984-12-28
GB2050762B (en) 1983-03-16

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