JPS6439860A - Telephone set circuit - Google Patents
Telephone set circuitInfo
- Publication number
- JPS6439860A JPS6439860A JP19612487A JP19612487A JPS6439860A JP S6439860 A JPS6439860 A JP S6439860A JP 19612487 A JP19612487 A JP 19612487A JP 19612487 A JP19612487 A JP 19612487A JP S6439860 A JPS6439860 A JP S6439860A
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- dial
- detecting
- state
- power source
- 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
Abstract
PURPOSE:To contrive to realize a long service life of an auxiliary power source, by setting a dial circuit to an operating state, only when an output from a line connection detecting circuit and an output signal from an off-hook operation detecting circuit is received. CONSTITUTION:Only when a line connection detecting circuit 18 for detecting a fact being in a state of receiving an inter-telephone line voltage, and an off- hook operation detecting circuit 20 for detecting a fact that a closing operation to a telephone line is executed has applied an output signal to a control circuit 23 for executing an operation of a dial circuit 7, the dial circuit 7 is subjected to a control of the control circuit 23, and becomes a state that the operation as the dial circuit 7 can be executed. Accordingly, in a state that the dial circuit 7 is not connected to the telephone line, when it becomes an operating state, an auxiliary power source is not consumed by the operation of the dial circuit 7. In such a way, a service life of the auxiliary power source for executing a memory holding operation can be extended.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP19612487A JPS6439860A (en) | 1987-08-05 | 1987-08-05 | Telephone set circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP19612487A JPS6439860A (en) | 1987-08-05 | 1987-08-05 | Telephone set circuit |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6439860A true JPS6439860A (en) | 1989-02-10 |
Family
ID=16352642
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP19612487A Pending JPS6439860A (en) | 1987-08-05 | 1987-08-05 | Telephone set circuit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6439860A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0676252A2 (en) | 1990-12-26 | 1995-10-11 | Kawasaki Jukogyo Kabushiki Kaisha | Method of and apparatus for withdrawing strand in horizontal continuous casting installation |
-
1987
- 1987-08-05 JP JP19612487A patent/JPS6439860A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0676252A2 (en) | 1990-12-26 | 1995-10-11 | Kawasaki Jukogyo Kabushiki Kaisha | Method of and apparatus for withdrawing strand in horizontal continuous casting installation |
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