GB2132447B - Switch device - Google Patents

Switch device

Info

Publication number
GB2132447B
GB2132447B GB08234673A GB8234673A GB2132447B GB 2132447 B GB2132447 B GB 2132447B GB 08234673 A GB08234673 A GB 08234673A GB 8234673 A GB8234673 A GB 8234673A GB 2132447 B GB2132447 B GB 2132447B
Authority
GB
United Kingdom
Prior art keywords
switch device
switch
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
Application number
GB08234673A
Other versions
GB2132447A (en
Inventor
Edward Albert Feuell
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.)
STC PLC
Original Assignee
Standard Telephone and Cables PLC
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 Standard Telephone and Cables PLC filed Critical Standard Telephone and Cables PLC
Priority to GB08234673A priority Critical patent/GB2132447B/en
Priority to NZ20634683A priority patent/NZ206346A/en
Priority to AU21775/83A priority patent/AU571469B2/en
Publication of GB2132447A publication Critical patent/GB2132447A/en
Application granted granted Critical
Publication of GB2132447B publication Critical patent/GB2132447B/en
Expired 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
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/82—Line monitoring circuits for call progress or status discrimination

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Devices For Supply Of Signal Current (AREA)
  • Electronic Switches (AREA)
GB08234673A 1982-12-04 1982-12-04 Switch device Expired GB2132447B (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
GB08234673A GB2132447B (en) 1982-12-04 1982-12-04 Switch device
NZ20634683A NZ206346A (en) 1982-12-04 1983-11-22 Fet with current limiting circuit
AU21775/83A AU571469B2 (en) 1982-12-04 1983-11-29 Switching device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB08234673A GB2132447B (en) 1982-12-04 1982-12-04 Switch device

Publications (2)

Publication Number Publication Date
GB2132447A GB2132447A (en) 1984-07-04
GB2132447B true GB2132447B (en) 1986-07-30

Family

ID=10534763

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08234673A Expired GB2132447B (en) 1982-12-04 1982-12-04 Switch device

Country Status (3)

Country Link
AU (1) AU571469B2 (en)
GB (1) GB2132447B (en)
NZ (1) NZ206346A (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61224548A (en) * 1985-03-28 1986-10-06 Toshiba Corp Telephone set
EP0233892B1 (en) * 1985-07-18 1994-02-16 Alcatel N.V. A telephone line switch
JPS62137925A (en) * 1985-12-11 1987-06-20 Nec Corp Radio transmitter-receiver
DE3609706C1 (en) * 1986-03-21 1987-11-05 Siemens Ag Process for the electronic replication of the hook switch and the handsfree loudspeaker key in a handsfree loudspeaker telephone station
GB2193414B (en) * 1986-07-14 1990-01-04 Siliconix Ltd Telephone instrument
AR241359A1 (en) * 1986-09-12 1992-05-29 Siemens Ag Circuitry for the injection of registering pulses for counting the charges to calling parties
DE3738555A1 (en) * 1987-11-13 1989-05-24 Standard Elektrik Lorenz Ag ELECTRONIC EARTH BUTTON
FR2665037B1 (en) * 1990-07-23 1992-09-18 Bull Sa CLIPPING CIRCUIT.

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1347929A (en) * 1972-02-17 1974-02-27 Standard Telephones Cables Ltd Telephone subscribers instruments
GB1447494A (en) * 1973-03-22 1976-08-25 Gen Electric Co Ltd Electric circuit arrangements for energising electromagnetic relays
NL8001136A (en) * 1980-02-26 1981-09-16 Philips Nv CIRCUIT FOR USE IN A TELEPHONE.
CA1136783A (en) * 1980-09-23 1982-11-30 Guy J. Chaput Telephone circuit

Also Published As

Publication number Publication date
AU571469B2 (en) 1988-04-21
NZ206346A (en) 1987-02-20
GB2132447A (en) 1984-07-04
AU2177583A (en) 1984-06-07

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Legal Events

Date Code Title Description
732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)
732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20011204