GB925514A - Improvements relating to telephone system substation circuits and to tone current generating oscillations suitable for use in such circuits - Google Patents

Improvements relating to telephone system substation circuits and to tone current generating oscillations suitable for use in such circuits

Info

Publication number
GB925514A
GB925514A GB1823659A GB1823659A GB925514A GB 925514 A GB925514 A GB 925514A GB 1823659 A GB1823659 A GB 1823659A GB 1823659 A GB1823659 A GB 1823659A GB 925514 A GB925514 A GB 925514A
Authority
GB
United Kingdom
Prior art keywords
capacitor
tone
circuit
circuits
sounder
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
GB1823659A
Other languages
English (en)
Inventor
Ronald William Stanley Kinsey
Peter John Lane
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.)
Associated Electrical Industries Ltd
Original Assignee
Associated Electrical Industries 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
Priority to NL252052D priority Critical patent/NL252052A/xx
Application filed by Associated Electrical Industries Ltd filed Critical Associated Electrical Industries Ltd
Priority to GB1823659A priority patent/GB925514A/en
Priority to DEA34743A priority patent/DE1142637B/de
Priority to FR828454A priority patent/FR1258069A/fr
Publication of GB925514A publication Critical patent/GB925514A/en
Expired 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
    • H04M19/04—Current supply arrangements for telephone systems providing ringing current or supervisory tones, e.g. dialling tone or busy tone the ringing-current being generated at the substations

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Devices For Supply Of Signal Current (AREA)
  • Mobile Radio Communication Systems (AREA)
GB1823659A 1959-05-28 1959-05-28 Improvements relating to telephone system substation circuits and to tone current generating oscillations suitable for use in such circuits Expired GB925514A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
NL252052D NL252052A (enrdf_load_stackoverflow) 1959-05-28
GB1823659A GB925514A (en) 1959-05-28 1959-05-28 Improvements relating to telephone system substation circuits and to tone current generating oscillations suitable for use in such circuits
DEA34743A DE1142637B (de) 1959-05-28 1960-05-27 Schaltungsanordnung zum Ausloesen eines tonfrequenten Rufes an Fernsprechteilnehmerstellen
FR828454A FR1258069A (fr) 1959-05-28 1960-05-27 Perfectionnements apportés aux circuits de sonnerie et aux oscillateurs générateurs de courant de tonalité convenant à ces circuits

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1823659A GB925514A (en) 1959-05-28 1959-05-28 Improvements relating to telephone system substation circuits and to tone current generating oscillations suitable for use in such circuits

Publications (1)

Publication Number Publication Date
GB925514A true GB925514A (en) 1963-05-08

Family

ID=10108997

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1823659A Expired GB925514A (en) 1959-05-28 1959-05-28 Improvements relating to telephone system substation circuits and to tone current generating oscillations suitable for use in such circuits

Country Status (3)

Country Link
DE (1) DE1142637B (enrdf_load_stackoverflow)
GB (1) GB925514A (enrdf_load_stackoverflow)
NL (1) NL252052A (enrdf_load_stackoverflow)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1059606A (en) * 1964-08-25 1967-02-22 Sits Soc It Telecom Siemens A ringer
CN113483882B (zh) * 2021-06-29 2023-03-14 重庆长安新能源汽车科技有限公司 一种电控发声装置

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE563265A (enrdf_load_stackoverflow) * 1956-06-22

Also Published As

Publication number Publication date
NL252052A (enrdf_load_stackoverflow)
DE1142637B (de) 1963-01-24

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