JPH0255983B2 - - Google Patents
Info
- Publication number
- JPH0255983B2 JPH0255983B2 JP6902181A JP6902181A JPH0255983B2 JP H0255983 B2 JPH0255983 B2 JP H0255983B2 JP 6902181 A JP6902181 A JP 6902181A JP 6902181 A JP6902181 A JP 6902181A JP H0255983 B2 JPH0255983 B2 JP H0255983B2
- Authority
- JP
- Japan
- Prior art keywords
- output
- circuit
- terminal
- winding
- transformer
- 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
- 238000004804 winding Methods 0.000 claims description 56
- 238000001514 detection method Methods 0.000 claims description 19
- 230000005236 sound signal Effects 0.000 claims description 17
- 239000003990 capacitor Substances 0.000 description 23
- 238000009499 grossing Methods 0.000 description 12
- 230000000903 blocking effect Effects 0.000 description 11
- 238000010586 diagram Methods 0.000 description 9
- 238000006243 chemical reaction Methods 0.000 description 8
- 238000004891 communication Methods 0.000 description 4
- 238000012544 monitoring process Methods 0.000 description 4
- 230000000295 complement effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/82—Line monitoring circuits for call progress or status discrimination
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Devices For Supply Of Signal Current (AREA)
- Interface Circuits In Exchanges (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6902181A JPS57184361A (en) | 1981-05-08 | 1981-05-08 | Subscriber circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6902181A JPS57184361A (en) | 1981-05-08 | 1981-05-08 | Subscriber circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57184361A JPS57184361A (en) | 1982-11-13 |
| JPH0255983B2 true JPH0255983B2 (enrdf_load_html_response) | 1990-11-28 |
Family
ID=13390506
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6902181A Granted JPS57184361A (en) | 1981-05-08 | 1981-05-08 | Subscriber circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57184361A (enrdf_load_html_response) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4598173A (en) * | 1984-10-15 | 1986-07-01 | Itt Corporation | Interface circuit for a subscriber line circuit |
| JP3016392B2 (ja) * | 1987-08-28 | 2000-03-06 | 株式会社日立製作所 | スタティック型ｒａｍ |
-
1981
- 1981-05-08 JP JP6902181A patent/JPS57184361A/ja active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS57184361A (en) | 1982-11-13 |