BR7705297A - ELECTRONIC BELL CIRCUIT - Google Patents

ELECTRONIC BELL CIRCUIT

Info

Publication number
BR7705297A
BR7705297A BR7705297A BR7705297A BR7705297A BR 7705297 A BR7705297 A BR 7705297A BR 7705297 A BR7705297 A BR 7705297A BR 7705297 A BR7705297 A BR 7705297A BR 7705297 A BR7705297 A BR 7705297A
Authority
BR
Brazil
Prior art keywords
bell circuit
electronic bell
electronic
circuit
bell
Prior art date
Application number
BR7705297A
Other languages
Portuguese (pt)
Inventor
J Comte
D Bolus
J Chevillon
P Philippe
Original Assignee
Int Standard Electric Corp
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 Int Standard Electric Corp filed Critical Int Standard Electric Corp
Publication of BR7705297A publication Critical patent/BR7705297A/en

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)
BR7705297A 1976-09-30 1977-08-10 ELECTRONIC BELL CIRCUIT BR7705297A (en)

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 (1)

Publication Number Publication Date
BR7705297A true BR7705297A (en) 1978-07-04

Family

ID=9178244

Family Applications (1)

Application Number Title Priority Date Filing Date
BR7705297A BR7705297A (en) 1976-09-30 1977-08-10 ELECTRONIC BELL CIRCUIT

Country Status (4)

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

Families Citing this family (5)

* 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.
FR2437121A1 (en) * 1978-09-19 1980-04-18 Thomson Ericsson Telephones So NEW RINGER INJECTION DEVICE IN TELEPHONE SETS
NL7903665A (en) * 1979-05-10 1980-11-12 Philips Nv CONNECTION FOR A TELEPHONE LINE.
IE870388L (en) * 1987-02-16 1988-08-16 Lake Electronic Tech Ringing voltage generator
DE3814661A1 (en) * 1988-04-29 1989-11-09 Nixdorf Computer Ag DEVICE FOR SWITCHING THE CALL AC VOLTAGE ON SUBSCRIBER CONNECTION LINES

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

Also Published As

Publication number Publication date
FR2366756A1 (en) 1978-04-28
BE859104A (en) 1978-03-28
DE2742677C2 (en) 1986-01-30
FR2366756B1 (en) 1983-04-22
DE2742677A1 (en) 1978-04-06

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