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GB2278246B - Current control circuit - Google Patents

Current control circuit

Info

Publication number
GB2278246B
GB2278246B GB9409979A GB9409979A GB2278246B GB 2278246 B GB2278246 B GB 2278246B GB 9409979 A GB9409979 A GB 9409979A GB 9409979 A GB9409979 A GB 9409979A GB 2278246 B GB2278246 B GB 2278246B
Authority
GB
United Kingdom
Prior art keywords
control circuit
current control
current
circuit
control
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.)
Expired - Fee Related
Application number
GB9409979A
Other versions
GB2278246A (en
GB9409979D0 (en
Inventor
Murray David Wild
Ronald Christopher Shaw Fox
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.)
Nokia Services Ltd
Original Assignee
Alcatel Australia Ltd
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 Alcatel Australia Ltd filed Critical Alcatel Australia Ltd
Publication of GB9409979D0 publication Critical patent/GB9409979D0/en
Publication of GB2278246A publication Critical patent/GB2278246A/en
Application granted granted Critical
Publication of GB2278246B publication Critical patent/GB2278246B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
    • H02H9/02—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess current
    • 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)
  • Power Engineering (AREA)
  • Signal Processing (AREA)
  • Devices For Supply Of Signal Current (AREA)
  • Interface Circuits In Exchanges (AREA)
GB9409979A 1993-05-19 1994-05-18 Current control circuit Expired - Fee Related GB2278246B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AUPL886993 1993-05-19

Publications (3)

Publication Number Publication Date
GB9409979D0 GB9409979D0 (en) 1994-07-06
GB2278246A GB2278246A (en) 1994-11-23
GB2278246B true GB2278246B (en) 1997-04-09

Family

ID=3776903

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9409979A Expired - Fee Related GB2278246B (en) 1993-05-19 1994-05-18 Current control circuit

Country Status (4)

Country Link
BE (1) BE1009093A5 (en)
GB (1) GB2278246B (en)
NZ (1) NZ260221A (en)
SG (1) SG44687A1 (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3903454A (en) * 1973-05-02 1975-09-02 Copal Co Ltd Electric circuit for energizing and deenergizing an exciter lamp of a talkie projector
GB1467023A (en) * 1971-10-26 1977-03-16 Teledyne Inc Current limiter responsive to current flow and temperature rise
GB2182527A (en) * 1985-11-02 1987-05-13 Stc Plc Telephone circuit

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1186131B (en) * 1985-12-02 1987-11-18 Gte Telecom Spa POWER CIRCUIT FOR TELEPHONE DEVICES
US4975949A (en) * 1989-06-15 1990-12-04 Plantronics, Inc. Electronic headset telephone

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1467023A (en) * 1971-10-26 1977-03-16 Teledyne Inc Current limiter responsive to current flow and temperature rise
US3903454A (en) * 1973-05-02 1975-09-02 Copal Co Ltd Electric circuit for energizing and deenergizing an exciter lamp of a talkie projector
GB2182527A (en) * 1985-11-02 1987-05-13 Stc Plc Telephone circuit

Also Published As

Publication number Publication date
GB2278246A (en) 1994-11-23
GB9409979D0 (en) 1994-07-06
BE1009093A5 (en) 1996-11-05
SG44687A1 (en) 1997-12-19
NZ260221A (en) 1996-09-25

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20000518