FR2281019A1 - IMPROVEMENTS TO POWER SUPPLIES FOR TELEPHONE STATIONS - Google Patents

IMPROVEMENTS TO POWER SUPPLIES FOR TELEPHONE STATIONS

Info

Publication number
FR2281019A1
FR2281019A1 FR7523462A FR7523462A FR2281019A1 FR 2281019 A1 FR2281019 A1 FR 2281019A1 FR 7523462 A FR7523462 A FR 7523462A FR 7523462 A FR7523462 A FR 7523462A FR 2281019 A1 FR2281019 A1 FR 2281019A1
Authority
FR
France
Prior art keywords
power supplies
telephone stations
stations
telephone
supplies
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
FR7523462A
Other languages
French (fr)
Other versions
FR2281019B3 (en
Inventor
Brian Alfred Bidwell
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
International Standard Electric Corp
Original Assignee
International 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 International Standard Electric Corp filed Critical International Standard Electric Corp
Publication of FR2281019A1 publication Critical patent/FR2281019A1/en
Application granted granted Critical
Publication of FR2281019B3 publication Critical patent/FR2281019B3/fr
Granted legal-status Critical Current

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)
FR7523462A 1974-07-30 1975-07-28 IMPROVEMENTS TO POWER SUPPLIES FOR TELEPHONE STATIONS Granted FR2281019A1 (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 (2)

Publication Number Publication Date
FR2281019A1 true FR2281019A1 (en) 1976-02-27
FR2281019B3 FR2281019B3 (en) 1979-04-27

Family

ID=10354661

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7523462A Granted FR2281019A1 (en) 1974-07-30 1975-07-28 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)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0023682A1 (en) * 1979-08-02 1981-02-11 Siemens Aktiengesellschaft Parallel regulator circuit for producing a constant output voltage
EP0023692A1 (en) * 1979-08-02 1981-02-11 Siemens Aktiengesellschaft Circuit arrangement for connecting a transmission device of a modem to a telephone line

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0023682A1 (en) * 1979-08-02 1981-02-11 Siemens Aktiengesellschaft Parallel regulator circuit for producing a constant output voltage
EP0023692A1 (en) * 1979-08-02 1981-02-11 Siemens Aktiengesellschaft Circuit arrangement for connecting a transmission device of a modem to a telephone line

Also Published As

Publication number Publication date
GB1472442A (en) 1977-05-04
HK5878A (en) 1978-02-03
ZA754856B (en) 1976-09-29
IE41644B1 (en) 1980-02-27
IT1039852B (en) 1979-12-10
NZ178241A (en) 1978-03-06
FR2281019B3 (en) 1979-04-27
BE831828A (en) 1976-01-29
IE41644L (en) 1976-01-30

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Legal Events

Date Code Title Description
ST Notification of lapse