ES8403680A1 - Circuito pulsatorio de cuadrante. - Google Patents

Circuito pulsatorio de cuadrante.

Info

Publication number
ES8403680A1
ES8403680A1 ES521112A ES521112A ES8403680A1 ES 8403680 A1 ES8403680 A1 ES 8403680A1 ES 521112 A ES521112 A ES 521112A ES 521112 A ES521112 A ES 521112A ES 8403680 A1 ES8403680 A1 ES 8403680A1
Authority
ES
Spain
Prior art keywords
current
transistor
order
bias
pulsing
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
ES521112A
Other languages
English (en)
Other versions
ES521112A0 (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.)
AT&T Corp
Original Assignee
Western Electric Co Inc
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 Western Electric Co Inc filed Critical Western Electric Co Inc
Publication of ES8403680A1 publication Critical patent/ES8403680A1/es
Publication of ES521112A0 publication Critical patent/ES521112A0/es
Granted 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
    • H04M1/26—Devices for calling a subscriber
    • H04M1/30—Devices which can set up and transmit only one digit at a time
    • H04M1/31—Devices which can set up and transmit only one digit at a time by interrupting current to generate trains of pulses; by periodically opening and closing contacts to generate trains of pulses
    • H04M1/312—Devices which can set up and transmit only one digit at a time by interrupting current to generate trains of pulses; by periodically opening and closing contacts to generate trains of pulses pulses produced by electronic circuits

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Telephonic Communication Services (AREA)
  • Devices For Supply Of Signal Current (AREA)

Abstract

3(57)CIRCUITO PULSATORIO DE CUADRANTE PARA TELEFONO.COMPRENDE: UN TRANSISTOR PULSATORIO (101); MEDIOS PARA CONECTARLO EN SERIE CON LA LINEA TELEFONICA (102, 103); MEDIOS PARA CONECTAR Y DESCONECTAR EL TRANSISTOR PULSATORIO EN RESPUESTA AL TREN DE PULSOS; UNA FUENTE DE CORRIENTE (105) AJUSTABLE CONECTADA AL TRANSISTOR PULSATORIO PARA ACTIVARLO PONIENDOLO EN CONDUCCION; Y MEDIOS (104) PARA AJUSTAR LA FUENTE DE CORRIENTE EN RESPUESTA A LA MAGNITUD DE LA CORRIENTE DE LA LINEA TELEFONICA.
ES521112A 1982-04-02 1983-03-29 Circuito pulsatorio de cuadrante. Granted ES521112A0 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US06/364,752 US4413159A (en) 1982-04-02 1982-04-02 Dial pulsing circuit

Publications (2)

Publication Number Publication Date
ES8403680A1 true ES8403680A1 (es) 1984-04-01
ES521112A0 ES521112A0 (es) 1984-04-01

Family

ID=23435924

Family Applications (1)

Application Number Title Priority Date Filing Date
ES521112A Granted ES521112A0 (es) 1982-04-02 1983-03-29 Circuito pulsatorio de cuadrante.

Country Status (9)

Country Link
US (1) US4413159A (es)
EP (1) EP0105336B1 (es)
AU (1) AU1293283A (es)
CA (1) CA1190679A (es)
DE (1) DE3364482D1 (es)
ES (1) ES521112A0 (es)
GB (1) GB2117999B (es)
IT (1) IT1173661B (es)
WO (1) WO1983003508A1 (es)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4555597A (en) * 1983-12-05 1985-11-26 Gte Business Communication Systems Inc. Transient resistant key operated pulse generating calling device circuit
KR940011757B1 (ko) * 1985-07-18 1994-12-23 알카텔 엔. 브이. 전화 라인 스위치
US4675902A (en) * 1985-09-23 1987-06-23 Gte Communication Systems, Inc. High performance telephone instrument with combination pulse and tone dialing capacity
NL8601773A (nl) * 1986-07-08 1988-02-01 Philips Nv Telefoontoestel voorzien van een pulskeuzecircuit met een schakeltransistor met een met de lijnstroom meelopende basisstroom.
EP0318974A3 (de) * 1987-12-03 1991-04-03 Siemens Aktiengesellschaft Schaltungsanordnung für einen elektronischen NSI-Kontakt in einer Fernsprechstation

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT977993B (it) * 1973-01-03 1974-09-20 Sits Soc It Telecom Siemens Tastiera di selezione elettroni ca per apparecchi telefonici con emissione di impulsi decadici intercambiabile con il disco com binatore
GB1480341A (en) * 1973-10-25 1977-07-20 Gen Electric Co Ltd Electric impulse transmitters for telephone instruments
GB1515503A (en) * 1974-01-15 1978-06-28 Gen Electric Co Ltd Electric impulse transmitters for telephone instruments
SE386341B (sv) * 1974-03-29 1976-08-02 Ericsson Telefon Ab L M Kopplingsanordning vid en telefonapparat innefattande en likspenningsomvandlare.
US4008379A (en) * 1975-02-14 1977-02-15 San/Bar Corporation Touch-pad to dial conversion unit
US4167655A (en) * 1977-10-17 1979-09-11 United Networks Inc. Push button to rotary dial converter systems
IT1202931B (it) * 1979-06-05 1989-02-15 Sits Soc It Telecom Siemens Circuito di interfaccia per tastiera elettronica con ripetizione della selezione
US4286120A (en) * 1979-10-15 1981-08-25 Gte Automatic Electric Labs Inc. Current regulated pulse dialer circuit
NL8001136A (nl) * 1980-02-26 1981-09-16 Philips Nv Schakeling voor toepassing in een telefoontoestel.

Also Published As

Publication number Publication date
AU1293283A (en) 1983-10-06
IT1173661B (it) 1987-06-24
WO1983003508A1 (en) 1983-10-13
EP0105336A1 (en) 1984-04-18
ES521112A0 (es) 1984-04-01
US4413159A (en) 1983-11-01
GB2117999B (en) 1985-11-06
GB2117999A (en) 1983-10-19
GB8307540D0 (en) 1983-04-27
CA1190679A (en) 1985-07-16
DE3364482D1 (en) 1986-08-21
EP0105336B1 (en) 1986-07-16
IT8320418A0 (it) 1983-03-31

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Legal Events

Date Code Title Description
FD1A Patent lapsed

Effective date: 19990405