ES8301085A1 - Perfeccionamientos en la fabricacion de aparatos telefonicos . - Google Patents

Perfeccionamientos en la fabricacion de aparatos telefonicos .

Info

Publication number
ES8301085A1
ES8301085A1 ES507791A ES507791A ES8301085A1 ES 8301085 A1 ES8301085 A1 ES 8301085A1 ES 507791 A ES507791 A ES 507791A ES 507791 A ES507791 A ES 507791A ES 8301085 A1 ES8301085 A1 ES 8301085A1
Authority
ES
Spain
Prior art keywords
disconnection
signalling
interrupter
preamplifier
microphone
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
ES507791A
Other languages
English (en)
Other versions
ES507791A0 (es
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Horlogerie Photographique Francaise SA
Original Assignee
Horlogerie Photographique Francaise SA
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 Horlogerie Photographique Francaise SA filed Critical Horlogerie Photographique Francaise SA
Publication of ES507791A0 publication Critical patent/ES507791A0/es
Publication of ES8301085A1 publication Critical patent/ES8301085A1/es
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/60—Substation equipment, e.g. for use by subscribers including speech amplifiers
    • H04M1/6008—Substation equipment, e.g. for use by subscribers including speech amplifiers in the transmitter circuit

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Devices For Supply Of Signal Current (AREA)
  • Telephone Function (AREA)
  • Transceivers (AREA)
  • Optical Communication System (AREA)

Abstract

APARATO TELEFONICO. COMPRENDE UN PREAMPLIFICADOR QUE AMPLIFICA LA SEÑAL DE SALIDA DEL MISMO O EMISOR QUE ESTA CONECTADO A LOS MEDIOS DE ALIMENTACION POR MEDIO DE DOS HILOS CONDUCTORES, SIENDO TRANSMITIDA LA SEÑAL DE SALIDA DEL PREAMPLIFICADOR POR ESTOS MISMOS DOS HILOS A UN ORGANO SEPARADOR DE MODULACION Y AMPLIFICADOR COLOCADO EN LA CAJA Y CONECTADO A LOS MEDIOS DE CONEXION DE LA LIMA. COMPRENDE TAMBIEN UN INTERRUPTOR, UN FILTRO. LOS MEDIOS DE ALIMENTACION PRODUCEN UNA IMPEDANCIA INTERNA QUE PUEDEN PRODUCIR UNA CAIDA DE TENSION MEDIA ENTRE LOS DOS HILOS CONDUCTORES IGUAL A UNA FRACCION DE LA TENSION EN VACIO DE LOS MEDIOS DE ALIMENTACION. CONTIENE TAMBIEN MEDIOS DE SEÑALIZACION QUE PUEDEN COMPRENDER UN GENERADOR CUYA SALIDA ESTA CONECTADA AL RECEPTOR PARA PRODUCIR UNA SEÑAL AUDIBLE.
ES507791A 1980-11-17 1981-11-17 Perfeccionamientos en la fabricacion de aparatos telefonicos . Expired ES8301085A1 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8024599A FR2494530B1 (fr) 1980-11-17 1980-11-17 Poste telephonique comportant un preamplificateur a courant porteur, un interrupteur de coupure de micro et un dispositif de signalisation de cette coupure

Publications (2)

Publication Number Publication Date
ES507791A0 ES507791A0 (es) 1982-11-01
ES8301085A1 true ES8301085A1 (es) 1982-11-01

Family

ID=9248148

Family Applications (1)

Application Number Title Priority Date Filing Date
ES507791A Expired ES8301085A1 (es) 1980-11-17 1981-11-17 Perfeccionamientos en la fabricacion de aparatos telefonicos .

Country Status (7)

Country Link
EP (1) EP0052347B1 (es)
JP (1) JPS57112161A (es)
AT (1) ATE9253T1 (es)
DE (1) DE3165869D1 (es)
ES (1) ES8301085A1 (es)
FR (1) FR2494530B1 (es)
GR (1) GR76934B (es)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63151119A (ja) * 1986-12-15 1988-06-23 Nec Corp プレス検出回路
US11928385B2 (en) 2019-07-30 2024-03-12 Hewlett-Packard Development Company, L.P. Sound processing logic connections

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH341195A (de) * 1956-11-09 1959-09-30 Zellweger Uster Ag Verfahren zum Einbau eines Transistorverstärkers in einen Telephonteilnehmerapparat und Mikrophonkapsel zur Durchführung des Verfahrens
GB1525964A (en) * 1975-11-20 1978-09-27 Standard Telephones Cables Ltd Telephone microphone

Also Published As

Publication number Publication date
GR76934B (es) 1984-09-04
EP0052347A1 (fr) 1982-05-26
FR2494530B1 (fr) 1987-09-25
FR2494530A1 (fr) 1982-05-21
ES507791A0 (es) 1982-11-01
EP0052347B1 (fr) 1984-09-05
DE3165869D1 (en) 1984-10-11
JPS57112161A (en) 1982-07-13
ATE9253T1 (de) 1984-09-15

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