JPH0435956B2 - - Google Patents
Info
- Publication number
- JPH0435956B2 JPH0435956B2 JP62175930A JP17593087A JPH0435956B2 JP H0435956 B2 JPH0435956 B2 JP H0435956B2 JP 62175930 A JP62175930 A JP 62175930A JP 17593087 A JP17593087 A JP 17593087A JP H0435956 B2 JPH0435956 B2 JP H0435956B2
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- current
- dial
- path
- diode bridge
- 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.)
- Expired - Lifetime
Links
- 239000003990 capacitor Substances 0.000 claims description 17
- 230000008878 coupling Effects 0.000 claims description 10
- 238000010168 coupling process Methods 0.000 claims description 10
- 238000005859 coupling reaction Methods 0.000 claims description 10
- 238000009499 grossing Methods 0.000 claims description 7
- 230000003287 optical effect Effects 0.000 claims description 6
- 238000007599 discharging Methods 0.000 claims description 4
- 230000003321 amplification Effects 0.000 description 5
- 238000003199 nucleic acid amplification method Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 230000002250 progressing effect Effects 0.000 description 1
Landscapes
- Interface Circuits In Exchanges (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP17593087A JPS6420791A (en) | 1987-07-16 | 1987-07-16 | Current loop forming circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP17593087A JPS6420791A (en) | 1987-07-16 | 1987-07-16 | Current loop forming circuit |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6420791A JPS6420791A (en) | 1989-01-24 |
JPH0435956B2 true JPH0435956B2 (it) | 1992-06-12 |
Family
ID=16004739
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP17593087A Granted JPS6420791A (en) | 1987-07-16 | 1987-07-16 | Current loop forming circuit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6420791A (it) |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6152053A (ja) * | 1984-08-20 | 1986-03-14 | Nec Corp | ダイヤルインパルス送出回路 |
JPS61105992A (ja) * | 1984-10-30 | 1986-05-24 | Iwatsu Electric Co Ltd | 局線インタ−フエ−ス回路 |
JPS62175929A (ja) * | 1986-01-30 | 1987-08-01 | Victor Co Of Japan Ltd | 磁気記録媒体 |
-
1987
- 1987-07-16 JP JP17593087A patent/JPS6420791A/ja active Granted
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6152053A (ja) * | 1984-08-20 | 1986-03-14 | Nec Corp | ダイヤルインパルス送出回路 |
JPS61105992A (ja) * | 1984-10-30 | 1986-05-24 | Iwatsu Electric Co Ltd | 局線インタ−フエ−ス回路 |
JPS62175929A (ja) * | 1986-01-30 | 1987-08-01 | Victor Co Of Japan Ltd | 磁気記録媒体 |
Also Published As
Publication number | Publication date |
---|---|
JPS6420791A (en) | 1989-01-24 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JPH0453474B2 (it) | ||
CN1192591C (zh) | 用于辅助设备的由电话线供电的电源及其操作方法 | |
US4894860A (en) | Trunk interface circuitry for telephone systems | |
US4500754A (en) | Solid state off hook phone line load | |
JP2846312B2 (ja) | 電気的に絶縁された通信線のdc電圧を基準レベルに保持する回路 | |
US4550226A (en) | Subscriber's telephone circuit arranged to present constant impedance to a telephone line | |
JPH0435956B2 (it) | ||
US4369337A (en) | Central office interface circuit | |
JPH01279667A (ja) | 自動遠隔通信装置及び方法 | |
JPH0342836B2 (it) | ||
US4145572A (en) | Power supply control circuit for subscriber carrier telephone system | |
CA1138581A (en) | Loop, dial pulse and ring trip detection circuit with capacitive shunt network | |
CA1088686A (en) | Tone applying line circuit | |
JPH0444476B2 (it) | ||
US4140884A (en) | Electronic tone ringer | |
JPH0312514B2 (it) | ||
EP0051446A1 (en) | Improvements in or relating to line interface circuits | |
US5253290A (en) | Circuit arrangement for the transmission of telecommunication signals | |
JP3287626B2 (ja) | 電話機付きファクシミリ装置 | |
JP3056580B2 (ja) | インターフェース装置 | |
JPS62217755A (ja) | ダイヤルパルス送出回路 | |
JPH0342835B2 (it) | ||
JPH066439A (ja) | プラグ−イン電話システムの補助リンガのための音響的フィードバックの抑制装置 | |
JPS62217791A (ja) | 極性反転検出回路 | |
JP3054987B2 (ja) | 端末用網制御装置 |