BE831828A - IMPROVEMENTS TO POWER SUPPLIES FOR TELEPHONE STATIONS - Google Patents

IMPROVEMENTS TO POWER SUPPLIES FOR TELEPHONE STATIONS

Info

Publication number
BE831828A
BE831828A BE2054481A BE2054481A BE831828A BE 831828 A BE831828 A BE 831828A BE 2054481 A BE2054481 A BE 2054481A BE 2054481 A BE2054481 A BE 2054481A BE 831828 A BE831828 A BE 831828A
Authority
BE
Belgium
Prior art keywords
power supplies
telephone stations
stations
telephone
supplies
Prior art date
Application number
BE2054481A
Other languages
French (fr)
Inventor
B A Bidwell
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 filed Critical
Publication of BE831828A publication Critical patent/BE831828A/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/26—Devices for calling a subscriber
    • H04M1/30—Devices which can set up and transmit only one digit at a time
    • H04M1/31—Devices which can set up and transmit only one digit at a time by interrupting current to generate trains of pulses; by periodically opening and closing contacts to generate trains of pulses
    • H04M1/312—Devices which can set up and transmit only one digit at a time by interrupting current to generate trains of pulses; by periodically opening and closing contacts to generate trains of pulses pulses produced by electronic circuits
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M19/00—Current supply arrangements for telephone systems
    • H04M19/08—Current supply arrangements for telephone systems with current supply sources at the substations

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Devices For Supply Of Signal Current (AREA)
BE2054481A 1974-07-30 1975-07-29 IMPROVEMENTS TO POWER SUPPLIES FOR TELEPHONE STATIONS BE831828A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3357074A GB1472442A (en) 1974-07-30 1974-07-30 Power supply circuits

Publications (1)

Publication Number Publication Date
BE831828A true BE831828A (en) 1976-01-29

Family

ID=10354661

Family Applications (1)

Application Number Title Priority Date Filing Date
BE2054481A BE831828A (en) 1974-07-30 1975-07-29 IMPROVEMENTS TO POWER SUPPLIES FOR TELEPHONE STATIONS

Country Status (8)

Country Link
BE (1) BE831828A (en)
FR (1) FR2281019A1 (en)
GB (1) GB1472442A (en)
HK (1) HK5878A (en)
IE (1) IE41644B1 (en)
IT (1) IT1039852B (en)
NZ (1) NZ178241A (en)
ZA (1) ZA754856B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2931464C2 (en) * 1979-08-02 1981-10-08 Siemens AG, 1000 Berlin und 8000 München Circuit arrangement for connecting a transmission device of a modem to a telephone line
DE2931456C2 (en) * 1979-08-02 1982-10-28 Siemens AG, 1000 Berlin und 8000 München Parallel control circuit

Also Published As

Publication number Publication date
FR2281019A1 (en) 1976-02-27
NZ178241A (en) 1978-03-06
IE41644B1 (en) 1980-02-27
FR2281019B3 (en) 1979-04-27
IE41644L (en) 1976-01-30
GB1472442A (en) 1977-05-04
ZA754856B (en) 1976-09-29
IT1039852B (en) 1979-12-10
HK5878A (en) 1978-02-03

Similar Documents

Publication Publication Date Title
JPS5159365A (en) Fet fukageetohoshosochi
GB1548652A (en) Telephone extension system utilizing power line carrier signals
JPS51125763A (en) Skinnprotective cosmetic compound
FR2301169A1 (en) IMPROVEMENTS TO FIXATI'S DEVICES
JPS5150550A (en) Fet zofukukairo
ZA748093B (en) Guide shower
GB1507896A (en) Direct current power supply
JPS54118715A (en) Device for supplying current to telephone channel
AU8591375A (en) 1alpha-hydroxy vitamin d3
JPS5129841A (en) Zetsuengeeto fet otsukatsutaekishodeisupureikudokairo
JPS5160440A (en) Kotaiatsuyo mis fet suitsuchingukairo
CA1035807A (en) Splash guard arrangement
CH612598A5 (en) Power shower
ZA757429B (en) Fungicidal agents
HU173497B (en) Oxigen-depolarization battery
AU8604275A (en) A-d converter
FR2281019A1 (en) IMPROVEMENTS TO POWER SUPPLIES FOR TELEPHONE STATIONS
ZA756708B (en) Pharmacologically active compounds
JPS5276598A (en) Auxiliary cooler
JPS5280423A (en) Dccdc converter
ZA757431B (en) Fungicidal agents
JPS5118483A (en) Zetsuengeeto fet shusekikairo
JPS518808A (en) Spc shikidenkitsushinsochi
AU8172775A (en) Battery
JPS5240948A (en) Transistor power amplifier