JPS58197946A - 電話機用ト−ンリンガ回路 - Google Patents

電話機用ト−ンリンガ回路

Info

Publication number
JPS58197946A
JPS58197946A JP8127582A JP8127582A JPS58197946A JP S58197946 A JPS58197946 A JP S58197946A JP 8127582 A JP8127582 A JP 8127582A JP 8127582 A JP8127582 A JP 8127582A JP S58197946 A JPS58197946 A JP S58197946A
Authority
JP
Japan
Prior art keywords
amplifier
circuit
voltage
sounder
terminal
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
JP8127582A
Other languages
English (en)
Japanese (ja)
Other versions
JPS641989B2 (enrdf_load_stackoverflow
Inventor
Shinji Nishimura
眞次 西村
Yutaka Nishino
豊 西野
Yutaka Ichinose
一ノ瀬　裕
Makoto Yoshitoshi
吉利　誠
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.)
Nippon Telegraph and Telephone Corp
Original Assignee
Nippon Telegraph and Telephone 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 Nippon Telegraph and Telephone Corp filed Critical Nippon Telegraph and Telephone Corp
Priority to JP8127582A priority Critical patent/JPS58197946A/ja
Publication of JPS58197946A publication Critical patent/JPS58197946A/ja
Publication of JPS641989B2 publication Critical patent/JPS641989B2/ja
Granted 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)
JP8127582A 1982-05-14 1982-05-14 電話機用ト−ンリンガ回路 Granted JPS58197946A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8127582A JPS58197946A (ja) 1982-05-14 1982-05-14 電話機用ト−ンリンガ回路

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8127582A JPS58197946A (ja) 1982-05-14 1982-05-14 電話機用ト−ンリンガ回路

Publications (2)

Publication Number Publication Date
JPS58197946A true JPS58197946A (ja) 1983-11-17
JPS641989B2 JPS641989B2 (enrdf_load_stackoverflow) 1989-01-13

Family

ID=13741812

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8127582A Granted JPS58197946A (ja) 1982-05-14 1982-05-14 電話機用ト−ンリンガ回路

Country Status (1)

Country Link
JP (1) JPS58197946A (enrdf_load_stackoverflow)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4946604A (enrdf_load_stackoverflow) * 1972-07-24 1974-05-04
JPS5227996U (enrdf_load_stackoverflow) * 1975-08-20 1977-02-26
JPS56162799A (en) * 1980-05-19 1981-12-14 Nippon Telegraph & Telephone Self-exciting type piezoelectric sounding circuit

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4946604A (enrdf_load_stackoverflow) * 1972-07-24 1974-05-04
JPS5227996U (enrdf_load_stackoverflow) * 1975-08-20 1977-02-26
JPS56162799A (en) * 1980-05-19 1981-12-14 Nippon Telegraph & Telephone Self-exciting type piezoelectric sounding circuit

Also Published As

Publication number Publication date
JPS641989B2 (enrdf_load_stackoverflow) 1989-01-13

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