JPS5236402A - Tone-ringer circuit for telephone - Google Patents
Tone-ringer circuit for telephoneInfo
- 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
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.
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)
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)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS427842Y1 (en) * | 1964-12-22 | 1967-04-19 |
-
1975
- 1975-09-17 JP JP11174275A patent/JPS5236402A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS427842Y1 (en) * | 1964-12-22 | 1967-04-19 |
Cited By (3)
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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