GB2202714B - A ringing voltage generator - Google Patents

A ringing voltage generator

Info

Publication number
GB2202714B
GB2202714B GB8802917A GB8802917A GB2202714B GB 2202714 B GB2202714 B GB 2202714B GB 8802917 A GB8802917 A GB 8802917A GB 8802917 A GB8802917 A GB 8802917A GB 2202714 B GB2202714 B GB 2202714B
Authority
GB
United Kingdom
Prior art keywords
voltage generator
ringing voltage
ringing
generator
voltage
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
GB8802917A
Other versions
GB8802917D0 (en
GB2202714A (en
Inventor
John Mary Walters
Augustine Anthony Bermingham
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.)
Lake Electronic Technologies Ltd
Original Assignee
Lake Electronic Technologies 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 Lake Electronic Technologies Ltd filed Critical Lake Electronic Technologies Ltd
Publication of GB8802917D0 publication Critical patent/GB8802917D0/en
Publication of GB2202714A publication Critical patent/GB2202714A/en
Application granted granted Critical
Publication of GB2202714B publication Critical patent/GB2202714B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M19/00—Current supply arrangements for telephone systems
    • H04M19/02—Current supply arrangements for telephone systems providing ringing current or supervisory tones, e.g. dialling tone or busy tone

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Devices For Supply Of Signal Current (AREA)
  • Dc-Dc Converters (AREA)
GB8802917A 1987-02-16 1988-02-09 A ringing voltage generator Expired - Fee Related GB2202714B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IE870388A IE870388L (en) 1987-02-16 1987-02-16 Ringing voltage generator

Publications (3)

Publication Number Publication Date
GB8802917D0 GB8802917D0 (en) 1988-03-09
GB2202714A GB2202714A (en) 1988-09-28
GB2202714B true GB2202714B (en) 1990-09-12

Family

ID=11011678

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8802917A Expired - Fee Related GB2202714B (en) 1987-02-16 1988-02-09 A ringing voltage generator

Country Status (5)

Country Link
FR (1) FR2611101B1 (en)
GB (1) GB2202714B (en)
IE (1) IE870388L (en)
NL (1) NL8700678A (en)
ZA (1) ZA874531B (en)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2366756A1 (en) * 1976-09-30 1978-04-28 Labo Cent Telecommunicat Ringing signal generator for telephone networks - uses triacs instead of mechanical relays between subscriber and supply lines
IE54008B1 (en) * 1982-11-17 1989-05-10 Lake Electronic Tech Apparatus for delivering a signal on a telephone
IE54733B1 (en) * 1983-09-08 1990-01-17 Lake Electronics Ltd Provate automatic branch exchange
US4609782A (en) * 1983-12-27 1986-09-02 Motorola, Inc. Solid state signal insertion circuit and method for use in a telephony system or the like

Also Published As

Publication number Publication date
GB8802917D0 (en) 1988-03-09
FR2611101A1 (en) 1988-08-19
NL8700678A (en) 1988-09-16
IE870388L (en) 1988-08-16
GB2202714A (en) 1988-09-28
FR2611101B1 (en) 1990-08-10
ZA874531B (en) 1987-12-28

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Legal Events

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

Effective date: 19940209