FR2366756A1 - Ringing signal generator for telephone networks - uses triacs instead of mechanical relays between subscriber and supply lines - Google Patents

Ringing signal generator for telephone networks - uses triacs instead of mechanical relays between subscriber and supply lines

Info

Publication number
FR2366756A1
FR2366756A1 FR7629418A FR7629418A FR2366756A1 FR 2366756 A1 FR2366756 A1 FR 2366756A1 FR 7629418 A FR7629418 A FR 7629418A FR 7629418 A FR7629418 A FR 7629418A FR 2366756 A1 FR2366756 A1 FR 2366756A1
Authority
FR
France
Prior art keywords
subscriber
supply lines
mechanical relays
instead
signal generator
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.)
Granted
Application number
FR7629418A
Other languages
French (fr)
Other versions
FR2366756B1 (en
Inventor
Daniel Michel Auguste Fe Bolus
Jean-Pierre Chevillon
Jean-Charles Comte
Pierre Denis Paul Philipp
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.)
Laboratoire Central de Telecommunications SA
Original Assignee
Laboratoire Central de Telecommunications 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 Laboratoire Central de Telecommunications SA filed Critical Laboratoire Central de Telecommunications SA
Priority to FR7629418A priority Critical patent/FR2366756A1/en
Priority to BR7705297A priority patent/BR7705297A/en
Priority to GB3908477A priority patent/GB1552078A/en
Priority to DE19772742677 priority patent/DE2742677C2/en
Priority to BE2056291A priority patent/BE859104A/en
Publication of FR2366756A1 publication Critical patent/FR2366756A1/en
Application granted granted Critical
Publication of FR2366756B1 publication Critical patent/FR2366756B1/fr
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M19/00—Current supply arrangements for telephone systems
    • H04M19/02—Current supply arrangements for telephone systems providing ringing current or supervisory tones, e.g. dialling tone or busy tone

Landscapes

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

Abstract

The generator injects the calling signal for telephone subscriber handsets. The generator is entirely electronic removing the need for mechanical relays and reduces the circuit weight and volume. Two identical triacs are connected between the subscriber and supply lines and are in a conducting state when the subscriber is being called. An NPN and a PNP transistor are connected between one subscriber line and the negative line and between the second subscriber line and ground respectively, these conducting during the ringing tone pauses. Each triac gate circuit is fed from a further triac allowing a.c. to circulate in the primary triac gate circuits during the ringing period.
FR7629418A 1976-09-30 1976-09-30 Ringing signal generator for telephone networks - uses triacs instead of mechanical relays between subscriber and supply lines Granted FR2366756A1 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
FR7629418A FR2366756A1 (en) 1976-09-30 1976-09-30 Ringing signal generator for telephone networks - uses triacs instead of mechanical relays between subscriber and supply lines
BR7705297A BR7705297A (en) 1976-09-30 1977-08-10 ELECTRONIC BELL CIRCUIT
GB3908477A GB1552078A (en) 1976-09-30 1977-09-20 Electronic ringing circuit
DE19772742677 DE2742677C2 (en) 1976-09-30 1977-09-22 Circuit arrangement for connecting the DC supply voltage and the AC ringing voltage to telephone subscriber lines
BE2056291A BE859104A (en) 1976-09-30 1977-09-28 ELECTRONIC BELL INJECTION CIRCUIT

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7629418A FR2366756A1 (en) 1976-09-30 1976-09-30 Ringing signal generator for telephone networks - uses triacs instead of mechanical relays between subscriber and supply lines

Publications (2)

Publication Number Publication Date
FR2366756A1 true FR2366756A1 (en) 1978-04-28
FR2366756B1 FR2366756B1 (en) 1983-04-22

Family

ID=9178244

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7629418A Granted FR2366756A1 (en) 1976-09-30 1976-09-30 Ringing signal generator for telephone networks - uses triacs instead of mechanical relays between subscriber and supply lines

Country Status (4)

Country Link
BE (1) BE859104A (en)
BR (1) BR7705297A (en)
DE (1) DE2742677C2 (en)
FR (1) FR2366756A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2437121A1 (en) * 1978-09-19 1980-04-18 Thomson Ericsson Telephones So NEW RINGER INJECTION DEVICE IN TELEPHONE SETS
FR2611101A1 (en) * 1987-02-16 1988-08-19 Lake Electronic Tech RING VOLTAGE GENERATOR FOR TELEPHONE INSTALLATION
EP0339351A2 (en) * 1988-04-29 1989-11-02 Siemens Nixdorf Informationssysteme Aktiengesellschaft Connection device for alternative call current at subscriber connection lines

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL7807531A (en) * 1978-07-13 1980-01-15 Philips Nv DEVICE FOR SUPPLYING A SIGNAL TO A TRANSMISSION LINE.
NL7903665A (en) * 1979-05-10 1980-11-12 Philips Nv CONNECTION FOR A TELEPHONE LINE.

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH600714A5 (en) * 1974-09-24 1978-06-30 Siemens Ag Albis
JPS5199408A (en) * 1975-02-28 1976-09-02 Hitachi Ltd

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2437121A1 (en) * 1978-09-19 1980-04-18 Thomson Ericsson Telephones So NEW RINGER INJECTION DEVICE IN TELEPHONE SETS
FR2611101A1 (en) * 1987-02-16 1988-08-19 Lake Electronic Tech RING VOLTAGE GENERATOR FOR TELEPHONE INSTALLATION
EP0339351A2 (en) * 1988-04-29 1989-11-02 Siemens Nixdorf Informationssysteme Aktiengesellschaft Connection device for alternative call current at subscriber connection lines
EP0339351A3 (en) * 1988-04-29 1990-11-14 Nixdorf Computer Aktiengesellschaft Connection device for alternative call current at subscriber connection lines

Also Published As

Publication number Publication date
DE2742677C2 (en) 1986-01-30
BR7705297A (en) 1978-07-04
DE2742677A1 (en) 1978-04-06
FR2366756B1 (en) 1983-04-22
BE859104A (en) 1978-03-28

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Legal Events

Date Code Title Description
ST Notification of lapse