GB1239537A - - Google Patents

Info

Publication number
GB1239537A
GB1239537A GB1239537DA GB1239537A GB 1239537 A GB1239537 A GB 1239537A GB 1239537D A GB1239537D A GB 1239537DA GB 1239537 A GB1239537 A GB 1239537A
Authority
GB
United Kingdom
Prior art keywords
transistors
point
potential
line
act
Prior art date
Legal status (The legal status 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 status listed.)
Expired
Application number
Other languages
English (en)
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 filed Critical
Publication of GB1239537A publication Critical patent/GB1239537A/en
Expired legal-status Critical Current

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

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Measurement Of Current Or Voltage (AREA)
  • Interface Circuits In Exchanges (AREA)
GB1239537D 1969-05-09 1970-05-05 Expired GB1239537A (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT449669A AT291356B (de) 1969-05-09 1969-05-09 Schaltungsanordnung zur selbsttätigen Aufrechterhaltung der Symmetrie von Speiseschaltungen für Teilnehmerstellen in Fernmelde-Anlagen unter Verwendung von Transistoren

Publications (1)

Publication Number Publication Date
GB1239537A true GB1239537A (de) 1971-07-14

Family

ID=3564787

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1239537D Expired GB1239537A (de) 1969-05-09 1970-05-05

Country Status (6)

Country Link
AT (1) AT291356B (de)
BE (1) BE750104A (de)
CH (1) CH512863A (de)
DE (1) DE2020527A1 (de)
FR (1) FR2047455A5 (de)
GB (1) GB1239537A (de)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2372554A1 (fr) * 1976-11-25 1978-06-23 Jeumont Schneider Equipement de ligne d'abonne pour central telephonique
DE2838038A1 (de) * 1978-08-31 1980-03-13 Siemens Ag Einspeiseeinheit mit hohem ausgangsseitigen innenwiderstand
FR2442557A1 (fr) * 1978-11-22 1980-06-20 Labo Cent Telecommunicat Pont d'alimentation electronique pour ligne telephonique
DE3032970C2 (de) * 1980-09-02 1987-04-16 Telefonbau Und Normalzeit Gmbh, 6000 Frankfurt Schaltungsanordnung zur Symmetrierung der Arbeitspunkte bei elektronisch gleichstromgespeisten Anschlußleitungen in Fernmelde-, insbesondere Fernsprechvermittlungsanlagen
JPS60157369A (ja) * 1984-01-26 1985-08-17 Iwatsu Electric Co Ltd 通話電流供給回路

Also Published As

Publication number Publication date
CH512863A (de) 1971-09-15
AT291356B (de) 1971-07-12
FR2047455A5 (de) 1971-03-12
BE750104A (fr) 1970-11-09
DE2020527A1 (de) 1970-12-23

Similar Documents

Publication Publication Date Title
ES396645A1 (es) Perfeccionamientos en fuentes de voltaje de referencia.
GB1460117A (en) Current amplifier
GB766744A (en) Semi-conductor signal receiving system
GB1239537A (de)
GB901445A (en) Improvements in or relating to pulse-generating arrangements
GB1269235A (en) Monolithic integrated circuit
GB1239061A (de)
GB1021854A (en) Telephone set circuits
ES383947A1 (es) Un dispositivo amplificador de corriente.
GB1126173A (en) Output current polarity sensing circuit for cycloconverters
GB1258442A (de)
FR2325247A2 (fr) Circuit logique et impulsionnel a securite intrinseque
GB773850A (en) Improvements in or relating to telephone set circuits
GB1237807A (en) Circuit arrangement for a telephone subscriber station
GB995418A (en) Improvements relating to circuits for generating sawtooth waveform currents
GB1070809A (en) Improvements in or relating to data transmission systems
GB1329734A (en) Vertical defelction system
GB710839A (en) Electric pulse rectifier circuits
GB1472442A (en) Power supply circuits
GB916040A (en) Electric signal generators
GB873500A (en) Arrangements consisting of electronic switching means for establishing the exclusive "or"-condition
GB965027A (en) Intelligence transmission systems
GB1233980A (de)
GB1111300A (en) Improvements relating to alternating current frequency converters
GB1154637A (en) AC Signalling System.

Legal Events

Date Code Title Description
PS Patent sealed
746 Register noted 'licences of right' (sect. 46/1977)
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee