JPS5236402A - Tone-ringer circuit for telephone - Google Patents

Tone-ringer circuit for telephone

Info

Publication number
JPS5236402A
JPS5236402A JP11174275A JP11174275A JPS5236402A JP S5236402 A JPS5236402 A JP S5236402A JP 11174275 A JP11174275 A JP 11174275A JP 11174275 A JP11174275 A JP 11174275A JP S5236402 A JPS5236402 A JP S5236402A
Authority
JP
Japan
Prior art keywords
tone
telephone
ringer circuit
circuit
ringer
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.)
Pending
Application number
JP11174275A
Other languages
Japanese (ja)
Inventor
Tadashi Tajo
Tsuneharu Saegusa
Toshiro Sekido
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.)
NIKKO DENKI SEISAKUSHO KK
NIKKO ELECTRIC Manufacturing
NITSUKOU DENKI SEISAKUSHIYO KK
Oki Electric Industry Co Ltd
Original Assignee
NIKKO DENKI SEISAKUSHO KK
NIKKO ELECTRIC Manufacturing
NITSUKOU DENKI SEISAKUSHIYO KK
Oki Electric Industry Co 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 NIKKO DENKI SEISAKUSHO KK, NIKKO ELECTRIC Manufacturing, NITSUKOU DENKI SEISAKUSHIYO KK, Oki Electric Industry Co Ltd filed Critical NIKKO DENKI SEISAKUSHO KK
Priority to JP11174275A priority Critical patent/JPS5236402A/en
Publication of JPS5236402A publication Critical patent/JPS5236402A/en
Pending 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)

Abstract

PURPOSE:To prevent the autonomous singing, and the resonance, by means of installing switching element, constant-voltage element and controlling condenser in a circuit.
JP11174275A 1975-09-17 1975-09-17 Tone-ringer circuit for telephone Pending JPS5236402A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11174275A JPS5236402A (en) 1975-09-17 1975-09-17 Tone-ringer circuit for telephone

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11174275A JPS5236402A (en) 1975-09-17 1975-09-17 Tone-ringer circuit for telephone

Publications (1)

Publication Number Publication Date
JPS5236402A true JPS5236402A (en) 1977-03-19

Family

ID=14569025

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11174275A Pending JPS5236402A (en) 1975-09-17 1975-09-17 Tone-ringer circuit for telephone

Country Status (1)

Country Link
JP (1) JPS5236402A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6149543A (en) * 1984-08-17 1986-03-11 Nec Corp Tone ringer circuit of telephone set
JPS6298947A (en) * 1985-10-25 1987-05-08 Hitachi Ltd Telephone set
JPH0568154U (en) * 1992-02-20 1993-09-10 ナカ電子株式会社 Call bell light display

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS427842Y1 (en) * 1964-12-22 1967-04-19

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS427842Y1 (en) * 1964-12-22 1967-04-19

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6149543A (en) * 1984-08-17 1986-03-11 Nec Corp Tone ringer circuit of telephone set
JPS6298947A (en) * 1985-10-25 1987-05-08 Hitachi Ltd Telephone set
JPH0568154U (en) * 1992-02-20 1993-09-10 ナカ電子株式会社 Call bell light display

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