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DK463383A - CONNECTING TO SUPPLY A POWER SUPPLY DEVICE WHICH DELIVERS A CONSTANT OPERATING TENSION - Google Patents

CONNECTING TO SUPPLY A POWER SUPPLY DEVICE WHICH DELIVERS A CONSTANT OPERATING TENSION Download PDF

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Publication number
DK463383A
DK463383A DK463383A DK463383A DK463383A DK 463383 A DK463383 A DK 463383A DK 463383 A DK463383 A DK 463383A DK 463383 A DK463383 A DK 463383A DK 463383 A DK463383 A DK 463383A
Authority
DK
Denmark
Prior art keywords
wich
emitter
collector
transistor
circuit
Prior art date
Application number
DK463383A
Other languages
Danish (da)
Other versions
DK463383D0 (en
Inventor
Kurt Eberhardt
Original Assignee
Licentia Gmbh
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 Licentia Gmbh filed Critical Licentia Gmbh
Publication of DK463383D0 publication Critical patent/DK463383D0/en
Publication of DK463383A publication Critical patent/DK463383A/en

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

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Amplifiers (AREA)
  • Looms (AREA)
  • Tension Adjustment In Filamentary Materials (AREA)
  • Prostheses (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)

Abstract

1. Circuit arrangement for feeding a current supply equipment, wich delivers a constant operating voltage, by way of an equipment, wich determines the feed direct current, in subscriber stations of centrally fed signalling installations, particulary telephone exchange installations, in wich the equipment determining the feed direct current is constructed as amplifier stage (12, 13, 14) with negative feedback, in wich switching means (12), wich become effective in dependence on the magnitude of the input voltage (voltage at K1, K2), switch (13 conductive, 8 blocked) the feed current circuit (I1 : K1, 14, 13, 20, K2) through when the magnitude of the input voltage is sufficient for feeding of the current supply equipment (20) and, when the magnitude of the input voltage is not sufficient for the feeding of the current supply equipment (20), interrupt the feed current circuit and switch through a loading current circuit (I1 : K1, 14, 8, K2) by-passing the current supply equipment (20), in wich the amplifier stage with negative feedback consist of complementary Darlington circuit (12, 13), of wich the emitter-end transistor (12) of a first conductivity type is connected by way of an emitter resistor (14) to the one connection terminal (K1) of the connecting line and of wich the collector-end transistor (13) of second conductivity type is connected by its emitter with the current supply equipment (20), and in wich the switching-through of the loading current circuit takes place by means of a transistor (8) of the second conductivity type, the collector of wich is connected to the junction between emitter resistor (14) and emitter of the emitter-end transistor (12) of the Darlington circuit and the emitter of wich is connected to the other connection terminal (K2), characterised thereby, that as switching means, the emitter-end transistor (12) of the Darlington circuit (12, 13) is constructed as double-collector transistor, the first (normal) collector (Ko1) of wich is connected with the base of the collector-end transistor (13) and the second (auxiliary collector) collector (Ko2) of wich is connected with the base of the transistor (8) of the second conductivity type lying in the loading current circuit, and that the base of the double-collector transistor (12) is connected to the output of a differential amplifier (D), the first input of which is connected by way of an impedance member (4, 5) with the one connection terminal (K1) and by way of a constant voltage source (6, 7) displaying a predetermined internal resistance with the other connection terminal (K2) and the second input of which is connected to the junction between emitter resistor (14) and emitter of the doublecollector transistor (12).
DK463383A 1982-10-16 1983-10-07 CONNECTING TO SUPPLY A POWER SUPPLY DEVICE WHICH DELIVERS A CONSTANT OPERATING TENSION DK463383A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19823238416 DE3238416A1 (en) 1982-10-16 1982-10-16 CIRCUIT ARRANGEMENT FOR THE SUPPLY OF A POWER SUPPLY DEVICE SUPPLYING A CONSTANT OPERATING VOLTAGE

Publications (2)

Publication Number Publication Date
DK463383D0 DK463383D0 (en) 1983-10-07
DK463383A true DK463383A (en) 1984-04-17

Family

ID=6175901

Family Applications (1)

Application Number Title Priority Date Filing Date
DK463383A DK463383A (en) 1982-10-16 1983-10-07 CONNECTING TO SUPPLY A POWER SUPPLY DEVICE WHICH DELIVERS A CONSTANT OPERATING TENSION

Country Status (4)

Country Link
EP (1) EP0107133B1 (en)
AT (1) ATE19910T1 (en)
DE (2) DE3238416A1 (en)
DK (1) DK463383A (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3530064A1 (en) * 1985-08-22 1987-03-05 Nixdorf Computer Ag Circuit arrangement for connecting telecommunications devices, in particular telephone devices to a telecommunications network
GB8615781D0 (en) * 1986-06-27 1986-08-06 British Telecomm Power recovery circuit
DE3826765A1 (en) * 1988-08-04 1990-02-08 Deutsche Telephonwerk Kabel Circuit arrangement for feeding electronic components in communications terminals via the connection lines
GB2289187B (en) * 1994-04-26 1999-01-20 Motorola Inc Telephone line interface circuit

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS596549B2 (en) * 1979-07-03 1984-02-13 日本電信電話株式会社 3-terminal power supply circuit for telephones
DE3029895C2 (en) * 1979-08-07 1986-03-20 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Circuit arrangement for feeding a power supply device which delivers a constant operating voltage
DE2931922C2 (en) * 1979-08-07 1982-03-25 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt "Circuit arrangement for feeding a power supply device that delivers a constant operating voltage"

Also Published As

Publication number Publication date
DE3363598D1 (en) 1986-06-26
EP0107133B1 (en) 1986-05-21
DE3238416A1 (en) 1984-04-19
DK463383D0 (en) 1983-10-07
ATE19910T1 (en) 1986-06-15
EP0107133A1 (en) 1984-05-02

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Legal Events

Date Code Title Description
ATS Application withdrawn