CU34755A - CONNECTION FOR TELEPHONE DEVICES IN SUBSCRIBER LINES WITH SINGLE OR DOUBLE SERVICE - Google Patents

CONNECTION FOR TELEPHONE DEVICES IN SUBSCRIBER LINES WITH SINGLE OR DOUBLE SERVICE

Info

Publication number
CU34755A
CU34755A CU34755A CU34755A CU34755A CU 34755 A CU34755 A CU 34755A CU 34755 A CU34755 A CU 34755A CU 34755 A CU34755 A CU 34755A CU 34755 A CU34755 A CU 34755A
Authority
CU
Cuba
Prior art keywords
connection
conductor
double
subscriber lines
transistor
Prior art date
Application number
CU34755A
Other languages
Spanish (es)
Other versions
CU20982L (en
Inventor
Claus-Peter Kaufmann
Helmut Glier
Original Assignee
Nordhausen Veb Fernmeldewerk
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 Nordhausen Veb Fernmeldewerk filed Critical Nordhausen Veb Fernmeldewerk
Publication of CU20982L publication Critical patent/CU20982L/en
Publication of CU34755A publication Critical patent/CU34755A/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/58—Anti-side-tone circuits
    • H04M1/585—Anti-side-tone circuits implemented without inductive element
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/71—Substation extension arrangements
    • H04M1/715—Substation extension arrangements using two or more extensions per line

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Interface Circuits In Exchanges (AREA)
  • Telephonic Communication Services (AREA)
  • Telephone Function (AREA)
  • Devices For Supply Of Signal Current (AREA)

Abstract

Mecanismo de acoplamiento para aparatos telefónicos con líneas de abonados de uso simple o doble, preferiblemente para aparatos con circuito terminal de cuatro alambres sin traslador, que tengan un amplificador de recepción transistorizado en serie con un transistor para inductividad y donde se halla dispuesto, con el fin de asegurar la independecia de la polaridad de la corriente de alimentación, un rectificador de vía doble delante de la conexión del aparato, en el cual, en caso de uso doble, se desconecten mediantes puentes separables los diodos que durante la inversión de polaridad de la tensión se encuentren de paso. Característica: en posición de reposo la base del transistor amplificador (T1) queda, pasando sobre un contacto (GU2) del conmutador horquilla, junto al conductor colocado sobre los diodos de entrada (D1 y D2) y ese conductor está conectado mediante un diodo en dirección de paso (D5) y una resistencia (R8) al emisor del transistor amplificador (T1), quedando la combinación de timbre entre el punto de enlace de la resistencia (R8) con el diodo (D5) y el otro conductor de la línea del abonado.Coupling mechanism for telephone sets with single or dual use subscriber lines, preferably for sets with a four-wire terminal circuit without a driver, which have a transistorized reception amplifier in series with a transistor for inductivity and where it is arranged, with the In order to ensure the independence of the polarity of the supply current, a double-track rectifier in front of the connection of the apparatus, in which, in case of double use, the diodes that during the reversal of polarity of the tension is passing. Characteristic: in rest position the base of the amplifying transistor (T1) remains, passing over a contact (GU2) of the fork switch, next to the conductor placed on the input diodes (D1 and D2) and that conductor is connected by a diode in step direction (D5) and a resistance (R8) to the emitter of the amplifier transistor (T1), leaving the ring combination between the point of connection of the resistance (R8) with the diode (D5) and the other conductor of the line of the subscriber.

CU34755A 1976-09-23 1977-08-23 CONNECTION FOR TELEPHONE DEVICES IN SUBSCRIBER LINES WITH SINGLE OR DOUBLE SERVICE CU34755A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DD19495576A DD127119B1 (en) 1976-09-23 1976-09-23

Publications (2)

Publication Number Publication Date
CU20982L CU20982L (en) 1981-04-20
CU34755A true CU34755A (en) 1983-10-04

Family

ID=5505821

Family Applications (1)

Application Number Title Priority Date Filing Date
CU34755A CU34755A (en) 1976-09-23 1977-08-23 CONNECTION FOR TELEPHONE DEVICES IN SUBSCRIBER LINES WITH SINGLE OR DOUBLE SERVICE

Country Status (7)

Country Link
CS (1) CS225657B1 (en)
CU (1) CU34755A (en)
DD (1) DD127119B1 (en)
DE (1) DE2732532C2 (en)
HU (1) HU176960B (en)
RO (1) RO80538B1 (en)
YU (1) YU39255B (en)

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2159150C3 (en) * 1971-11-29 1978-07-27 Siemens Ag, 1000 Berlin Und 8000 Muenchen Circuit arrangement for centrally fed subscriber stations with speech circuits containing a resistor bridge

Also Published As

Publication number Publication date
RO80538A2 (en) 1984-03-15
DD127119A1 (en) 1977-09-07
DD127119B1 (en) 1981-05-27
HU176960B (en) 1981-06-28
YU39255B (en) 1984-10-31
YU222377A (en) 1982-02-28
DE2732532C2 (en) 1986-04-17
RO80538B1 (en) 1984-03-30
CS225657B1 (en) 1984-02-13
DE2732532A1 (en) 1978-03-30
CU20982L (en) 1981-04-20

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