JPH0470820B2 - - Google Patents
Info
- Publication number
- JPH0470820B2 JPH0470820B2 JP21457589A JP21457589A JPH0470820B2 JP H0470820 B2 JPH0470820 B2 JP H0470820B2 JP 21457589 A JP21457589 A JP 21457589A JP 21457589 A JP21457589 A JP 21457589A JP H0470820 B2 JPH0470820 B2 JP H0470820B2
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- transistors
- parallel
- capacitor
- current
- 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
Links
- 239000003990 capacitor Substances 0.000 claims description 13
- 238000004804 winding Methods 0.000 claims description 8
- 230000000295 complement effect Effects 0.000 claims description 5
- 238000010586 diagram Methods 0.000 description 12
- 238000001514 detection method Methods 0.000 description 7
- 238000005259 measurement Methods 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000008186 active pharmaceutical agent Substances 0.000 description 1
- 230000002457 bidirectional effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21457589A JPH0378357A (ja) | 1989-08-21 | 1989-08-21 | 直流終端回路 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21457589A JPH0378357A (ja) | 1989-08-21 | 1989-08-21 | 直流終端回路 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0378357A JPH0378357A (ja) | 1991-04-03 |
| JPH0470820B2 true JPH0470820B2 (fr) | 1992-11-12 |
Family
ID=16657987
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP21457589A Granted JPH0378357A (ja) | 1989-08-21 | 1989-08-21 | 直流終端回路 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0378357A (fr) |
-
1989
- 1989-08-21 JP JP21457589A patent/JPH0378357A/ja active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0378357A (ja) | 1991-04-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4041252A (en) | Transformerless two-wire/four-wire hybrid with DC sourcing capability | |
| USRE35901E (en) | Solid state isolation device using opto-isolators | |
| US4203009A (en) | Unbalanced/balanced converter circuits | |
| US4275277A (en) | Subscriber line interface circuit for a telephone line | |
| US4866768A (en) | Station line interface circuit for a telecommunication network | |
| US4558183A (en) | Opto-coupler interfacing circuit | |
| EP0088777A1 (fr) | Circuit multiplicateur de courant equilibre pour un circuit d'interface de boucle d'un abonne | |
| US6192125B1 (en) | Optical coupling circuit for a data access arrangement (DAA) | |
| US6240177B1 (en) | Communication device comprising an off-hook detection circuit | |
| GB1563658A (en) | Interface circuits | |
| KR100309079B1 (ko) | 모뎀을구비한전화기장치 | |
| US4135062A (en) | Electric network for use in a subscriber's loop | |
| US4436961A (en) | Communications system connecting circuit for controlling derivation of operating power from subscriber line current | |
| JPH0470820B2 (fr) | ||
| JPS58501610A (ja) | 通信ラインのための検出回路 | |
| CA1137667A (fr) | Montage pour appliquer un signal a une ligne de transmission | |
| JPS5853542B2 (ja) | 加入者回線用の電子電話回路 | |
| US5347575A (en) | Circuit to detect the hook status and ringing at the CPE end of a telephone network | |
| US4445006A (en) | Four-wire conversion circuit for a telephone subscriber line | |
| EP0086183B1 (fr) | Répéteur électronique pour ligne extérieure | |
| EP0593116B1 (fr) | Téléphone comportant un modem | |
| US5943418A (en) | Ring-trip circuit | |
| CA2022923C (fr) | Circuit hybride | |
| SU1660200A1 (ru) | Переговорное устройство | |
| GB2055021A (en) | Telephone line circuit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |