BR7801189A - Circuito eletronico de injecao de toque - Google Patents

Circuito eletronico de injecao de toque

Info

Publication number
BR7801189A
BR7801189A BR7801189A BR7801189A BR7801189A BR 7801189 A BR7801189 A BR 7801189A BR 7801189 A BR7801189 A BR 7801189A BR 7801189 A BR7801189 A BR 7801189A BR 7801189 A BR7801189 A BR 7801189A
Authority
BR
Brazil
Prior art keywords
electronic circuit
injection electronic
touch injection
touch
circuit
Prior art date
Application number
BR7801189A
Other languages
English (en)
Portuguese (pt)
Inventor
J Comte
J Chevillon
P Philippe
D Bolus
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 BR7801189A publication Critical patent/BR7801189A/pt

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)
  • Power Conversion In General (AREA)
BR7801189A 1977-02-18 1978-02-14 Circuito eletronico de injecao de toque BR7801189A (pt)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7704774A FR2381425A2 (fr) 1977-02-18 1977-02-18 Circuit electronique d'injection de sonnerie

Publications (1)

Publication Number Publication Date
BR7801189A true BR7801189A (pt) 1978-10-31

Family

ID=9186953

Family Applications (1)

Application Number Title Priority Date Filing Date
BR7801189A BR7801189A (pt) 1977-02-18 1978-02-14 Circuito eletronico de injecao de toque

Country Status (4)

Country Link
BR (1) BR7801189A (de)
CH (1) CH626487A5 (de)
DE (1) DE2801372C2 (de)
FR (1) FR2381425A2 (de)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4331838A (en) * 1980-04-23 1982-05-25 Tii Industries, Inc. Telephone ringer isolator circuit arrangement
FR2664781B1 (fr) * 1990-07-11 1995-04-21 C2Es Dispositif pour la commutation d'un signal d'appel alternatif cadence sur un poste telephonique relie a un autocommutateur.

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2230040C3 (de) * 1972-06-20 1978-10-05 Siemens Ag, 1000 Berlin Und 8000 Muenchen Schaltungsanordnung zur Rufstromsteuerung in automatischen Fernsprechvermittlungsanlagen
AT335520B (de) * 1972-07-12 1977-03-10 Itt Austria Schaltungsanordnung fur fernmeldeanlagen zur intermittierenden speisung der rufstromkreise der teilnehmerstellen mit gleichspannung bzw. mit von gleichspannung uberlagerter rufwechselspannung
CH600714A5 (de) * 1974-09-24 1978-06-30 Siemens Ag Albis
JPS5199408A (de) * 1975-02-28 1976-09-02 Hitachi Ltd

Also Published As

Publication number Publication date
DE2801372A1 (de) 1978-08-24
FR2381425A2 (fr) 1978-09-15
CH626487A5 (en) 1981-11-13
DE2801372C2 (de) 1986-12-04

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