JPS6390351U - - Google Patents
Info
- Publication number
- JPS6390351U JPS6390351U JP18453686U JP18453686U JPS6390351U JP S6390351 U JPS6390351 U JP S6390351U JP 18453686 U JP18453686 U JP 18453686U JP 18453686 U JP18453686 U JP 18453686U JP S6390351 U JPS6390351 U JP S6390351U
- Authority
- JP
- Japan
- Prior art keywords
- photocoupler
- ringer
- signal
- smoothing capacitor
- output signal
- 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
- 238000001514 detection method Methods 0.000 claims description 4
- 239000003990 capacitor Substances 0.000 claims description 3
- 238000009499 grossing Methods 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 4
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP18453686U JPS6390351U (sk) | 1986-11-28 | 1986-11-28 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP18453686U JPS6390351U (sk) | 1986-11-28 | 1986-11-28 |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6390351U true JPS6390351U (sk) | 1988-06-11 |
Family
ID=31132307
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP18453686U Pending JPS6390351U (sk) | 1986-11-28 | 1986-11-28 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6390351U (sk) |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS54105412A (en) * | 1978-02-06 | 1979-08-18 | Hitachi Ltd | Detection circuit for call signal |
JPS593658B2 (ja) * | 1975-04-11 | 1984-01-25 | 松下電器産業株式会社 | ミズセイギヨキ |
-
1986
- 1986-11-28 JP JP18453686U patent/JPS6390351U/ja active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS593658B2 (ja) * | 1975-04-11 | 1984-01-25 | 松下電器産業株式会社 | ミズセイギヨキ |
JPS54105412A (en) * | 1978-02-06 | 1979-08-18 | Hitachi Ltd | Detection circuit for call signal |
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