NL7613192A - Gelijkspannings signaal detector schakeling. - Google Patents

Gelijkspannings signaal detector schakeling.

Info

Publication number
NL7613192A
NL7613192A NL7613192A NL7613192A NL7613192A NL 7613192 A NL7613192 A NL 7613192A NL 7613192 A NL7613192 A NL 7613192A NL 7613192 A NL7613192 A NL 7613192A NL 7613192 A NL7613192 A NL 7613192A
Authority
NL
Netherlands
Prior art keywords
voltage signal
detector circuit
signal detector
circuit
voltage
Prior art date
Application number
NL7613192A
Other languages
English (en)
Original Assignee
Post Office
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 Post Office filed Critical Post Office
Publication of NL7613192A publication Critical patent/NL7613192A/nl

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M19/00—Current supply arrangements for telephone systems
    • H04M19/001—Current supply source at the exchanger providing current to substations

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Devices For Supply Of Signal Current (AREA)
  • Interface Circuits In Exchanges (AREA)
NL7613192A 1975-11-26 1976-11-26 Gelijkspannings signaal detector schakeling. NL7613192A (nl)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB48692/75A GB1563803A (en) 1975-11-26 1975-11-26 Telecommunications transmission and signalling curcuits

Publications (1)

Publication Number Publication Date
NL7613192A true NL7613192A (nl) 1977-05-31

Family

ID=10449573

Family Applications (1)

Application Number Title Priority Date Filing Date
NL7613192A NL7613192A (nl) 1975-11-26 1976-11-26 Gelijkspannings signaal detector schakeling.

Country Status (7)

Country Link
US (1) US4079208A (nl)
JP (1) JPS5284906A (nl)
CA (1) CA1063743A (nl)
DE (1) DE2653888A1 (nl)
GB (1) GB1563803A (nl)
NL (1) NL7613192A (nl)
SE (1) SE7613319L (nl)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52132708A (en) * 1976-04-30 1977-11-07 Nippon Telegr & Teleph Corp <Ntt> Line monitor system
NL7700719A (nl) * 1977-01-25 1978-07-27 Philips Nv Storingsongevoelig lijnsupervisiecircuit.
CH623696A5 (nl) * 1977-11-03 1981-06-15 Gfeller Ag
JPS5637793A (en) * 1979-09-05 1981-04-11 Hitachi Ltd Loop detecting circuit
US4323734A (en) * 1980-05-15 1982-04-06 Crest Industries, Inc. Interface circuit for telephone line to equipment signal coupling
US4389543A (en) * 1980-12-18 1983-06-21 Martus Granirer Telephone-activated audio control circuit
DE3138649A1 (de) * 1981-09-29 1983-04-14 TE KA DE Felten & Guilleaume Fernmeldeanlagen GmbH, 8500 Nürnberg Verfahren und schaltungsanordnung zur speisung einer teilnehmerendeinrichtung
US4495494A (en) * 1981-10-05 1985-01-22 Bell Telephone Laboratories, Incorporated Detector circuit for communication lines
CA1200335A (en) * 1984-02-13 1986-02-04 Stanley D. Rosenbaum Active impedance line feed circuit
CA1209732A (en) * 1984-03-12 1986-08-12 Stanley D. Rosenbaum Active impedance line feed circuit with improved ground fault protection
CA1201228A (en) * 1984-04-12 1986-02-25 Puran S. Kasbia Detection of ground or loop start configuration in telephone loop signalling circuit
US4535201A (en) * 1984-04-16 1985-08-13 Northern Telecom Limited Ground start detection in telephone loop signalling circuit
JP2912388B2 (ja) * 1989-08-15 1999-06-28 沖電気工業株式会社 加入者回路
US5168518A (en) * 1991-10-10 1992-12-01 Boston Technology, Inc. Coin tone validator for telephone paystations

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1274957A (en) * 1967-09-06 1972-05-17 Gen Electric Co Ltd Improvements in or relating to telephone line loop-detecting circuits
GB1201093A (en) * 1967-09-06 1970-08-05 Gen Electric & English Elect Improvements in or relating to telephone line loop-detecting circuits
BE754235A (fr) * 1969-08-05 1970-12-31 Western Electric Co Circuit de supervision pour lignes telephoniques
GB1461207A (en) * 1975-04-01 1977-01-13 Standard Telephones Cables Ltd Electrical circuit for indicating the presence and direction of flow of an electrical current

Also Published As

Publication number Publication date
DE2653888A1 (de) 1977-06-08
JPS5284906A (en) 1977-07-14
GB1563803A (en) 1980-04-02
CA1063743A (en) 1979-10-02
SE7613319L (sv) 1977-05-27
US4079208A (en) 1978-03-14

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Legal Events

Date Code Title Description
BV The patent application has lapsed