BR7801189A - TOUCH INJECTION ELECTRONIC CIRCUIT - Google Patents

TOUCH INJECTION ELECTRONIC CIRCUIT

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
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/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)
  • Power Conversion In General (AREA)
BR7801189A 1977-02-18 1978-02-14 TOUCH INJECTION ELECTRONIC CIRCUIT BR7801189A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7704774A FR2381425A2 (en) 1977-02-18 1977-02-18 ELECTRONIC BELL INJECTION CIRCUIT

Publications (1)

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

Family

ID=9186953

Family Applications (1)

Application Number Title Priority Date Filing Date
BR7801189A BR7801189A (en) 1977-02-18 1978-02-14 TOUCH INJECTION ELECTRONIC CIRCUIT

Country Status (4)

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

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 (en) * 1990-07-11 1995-04-21 C2Es DEVICE FOR SWITCHING A CADENCE ALTERNATE CALL SIGNAL ON A TELEPHONE STATION CONNECTED TO A PABX.

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2230040C3 (en) * 1972-06-20 1978-10-05 Siemens Ag, 1000 Berlin Und 8000 Muenchen Circuit arrangement for ringing current control in automatic telephone exchange systems
AT335520B (en) * 1972-07-12 1977-03-10 Itt Austria CIRCUIT ARRANGEMENT FOR REMOTE SIGNALING SYSTEMS FOR INTERMITTING SUPPLY OF THE CALL CIRCUITS OF THE SUBSCRIBER POSITIONS WITH ALTERNATIVE CALL VOLTAGE SUPPLIED BY DC VOLTAGE
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
FR2381425A2 (en) 1978-09-15
CH626487A5 (en) 1981-11-13
DE2801372C2 (en) 1986-12-04
DE2801372A1 (en) 1978-08-24

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