DK122150B - Pulsator for ringesignaler fra automatiske telefoncentraler. - Google Patents

Pulsator for ringesignaler fra automatiske telefoncentraler.

Info

Publication number
DK122150B
DK122150B DK485370AA DK485370A DK122150B DK 122150 B DK122150 B DK 122150B DK 485370A A DK485370A A DK 485370AA DK 485370 A DK485370 A DK 485370A DK 122150 B DK122150 B DK 122150B
Authority
DK
Denmark
Prior art keywords
ringtones
pulsator
automatic telephone
telephone exchanges
exchanges
Prior art date
Application number
DK485370AA
Other languages
Danish (da)
English (en)
Inventor
F Vago
T Wolpert
Original Assignee
Ericsson Telefon Ab L M
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 Ericsson Telefon Ab L M filed Critical Ericsson Telefon Ab L M
Publication of DK122150B publication Critical patent/DK122150B/da

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)
DK485370AA 1969-09-23 1970-09-22 Pulsator for ringesignaler fra automatiske telefoncentraler. DK122150B (da)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE13062/69A SE332014B (fr) 1969-09-23 1969-09-23

Publications (1)

Publication Number Publication Date
DK122150B true DK122150B (da) 1972-01-24

Family

ID=20296754

Family Applications (1)

Application Number Title Priority Date Filing Date
DK485370AA DK122150B (da) 1969-09-23 1970-09-22 Pulsator for ringesignaler fra automatiske telefoncentraler.

Country Status (8)

Country Link
US (1) US3683118A (fr)
BE (1) BE756517A (fr)
DE (1) DE2046669A1 (fr)
DK (1) DK122150B (fr)
FR (1) FR2062509A5 (fr)
GB (1) GB1310820A (fr)
NL (1) NL7012634A (fr)
SE (1) SE332014B (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2138548B1 (fr) * 1971-05-19 1973-05-25 Ibm France
FR2172537A5 (fr) * 1972-02-17 1973-09-28 Constr Telephoniques
US3749846A (en) * 1972-06-08 1973-07-31 Gte Automatic Electric Lab Inc Ring trip circuit
US3919492A (en) * 1973-08-29 1975-11-11 Basic Inc Solid state interrupter
US3953683A (en) * 1974-10-29 1976-04-27 San/Bar Corporation Interrupter for telephone systems
NL7802423A (nl) * 1978-03-06 1979-09-10 Philips Nv Voedingsinrichting voor een lijnstroomloop.
US4955053A (en) * 1990-03-16 1990-09-04 Reliance Comm/Tec Corporation Solid state ringing switch
US6115469A (en) * 1998-08-25 2000-09-05 Unitrode Corporation Telephone line ring signal and DC power generator

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3536852A (en) * 1969-01-23 1970-10-27 Lorain Prod Corp Telephone interruption switching circuitry

Also Published As

Publication number Publication date
NL7012634A (fr) 1971-03-25
FR2062509A5 (fr) 1971-06-25
GB1310820A (en) 1973-03-21
US3683118A (en) 1972-08-08
DE2046669A1 (de) 1971-04-15
SE332014B (fr) 1971-01-25
BE756517A (fr) 1971-03-01

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