NL7903663A - Versterker voor toepassing in een lijncircuit. - Google Patents

Versterker voor toepassing in een lijncircuit. Download PDF

Info

Publication number
NL7903663A
NL7903663A NL7903663A NL7903663A NL7903663A NL 7903663 A NL7903663 A NL 7903663A NL 7903663 A NL7903663 A NL 7903663A NL 7903663 A NL7903663 A NL 7903663A NL 7903663 A NL7903663 A NL 7903663A
Authority
NL
Netherlands
Prior art keywords
transistor
amplifier
resistor
emitter
voltage source
Prior art date
Application number
NL7903663A
Other languages
English (en)
Dutch (nl)
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
Priority to NL7903663A priority Critical patent/NL7903663A/nl
Priority to US06/142,274 priority patent/US4340869A/en
Priority to GB8014760A priority patent/GB2050762B/en
Priority to AU58118/80A priority patent/AU543026B2/en
Priority to CA000351418A priority patent/CA1151331A/en
Priority to SE8003419A priority patent/SE446798B/sv
Priority to SE8003419D priority patent/SE8003419L/xx
Priority to IT21868/80A priority patent/IT1131453B/it
Priority to BE0/200535A priority patent/BE883194A/fr
Priority to JP6006180A priority patent/JPS55151852A/ja
Priority to DE3017566A priority patent/DE3017566C2/de
Priority to FR8010453A priority patent/FR2456431A1/fr
Publication of NL7903663A publication Critical patent/NL7903663A/nl

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)
NL7903663A 1979-05-10 1979-05-10 Versterker voor toepassing in een lijncircuit. NL7903663A (nl)

Priority Applications (12)

Application Number Priority Date Filing Date Title
NL7903663A NL7903663A (nl) 1979-05-10 1979-05-10 Versterker voor toepassing in een lijncircuit.
US06/142,274 US4340869A (en) 1979-05-10 1980-04-21 Amplifier for use in a line circuit
GB8014760A GB2050762B (en) 1979-05-10 1980-05-02 Amplifier for use in a line circuit
AU58118/80A AU543026B2 (en) 1979-05-10 1980-05-06 Line circuit amplifier
CA000351418A CA1151331A (en) 1979-05-10 1980-05-07 Amplifier for use in a line circuit
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
IT21868/80A IT1131453B (it) 1979-05-10 1980-05-07 Amplificatore per l'impiego in un circuito di linea telefonica
BE0/200535A BE883194A (fr) 1979-05-10 1980-05-08 Amplificateur a utiliser dans un circuit pour ligne d'abonne
JP6006180A JPS55151852A (en) 1979-05-10 1980-05-08 Amplifier
DE3017566A DE3017566C2 (de) 1979-05-10 1980-05-08 Verstärker, insbesondere für eine Teilnehmerschaltung
FR8010453A FR2456431A1 (fr) 1979-05-10 1980-05-09 Amplificateur a utiliser dans un circuit pour ligne d'abonne

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL7903663A NL7903663A (nl) 1979-05-10 1979-05-10 Versterker voor toepassing in een lijncircuit.
NL7903663 1979-05-10

Publications (1)

Publication Number Publication Date
NL7903663A true NL7903663A (nl) 1980-11-12

Family

ID=19833138

Family Applications (1)

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

Country Status (11)

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

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 (it) * 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
FR2406357A1 (fr) * 1977-10-17 1979-05-11 Trt Telecom Radio Electr Joncteur d'abonne telephonique
US4211896A (en) * 1977-10-17 1980-07-08 Telecommunications Radioelectrique Et Telephoniques T.R.T. Subscriber's circuit with a symmetrical amplifier
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
SE446798B (sv) 1986-10-06
IT8021868A0 (it) 1980-05-07
JPS55151852A (en) 1980-11-26
US4340869A (en) 1982-07-20
GB2050762B (en) 1983-03-16
BE883194A (fr) 1980-11-10
GB2050762A (en) 1981-01-07
AU5811880A (en) 1980-11-13
FR2456431B1 (it) 1984-12-28
DE3017566C2 (de) 1985-10-10
SE8003419L (sv) 1980-11-11
FR2456431A1 (fr) 1980-12-05
IT1131453B (it) 1986-06-25
CA1151331A (en) 1983-08-02
JPS6333755B2 (it) 1988-07-06
AU543026B2 (en) 1985-03-28

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Legal Events

Date Code Title Description
A1B A search report has been drawn up
BC A request for examination has been filed
A85 Still pending on 85-01-01
BI The patent application has been withdrawn