KR890005806U - 국선 감지회로 - Google Patents
국선 감지회로Info
- Publication number
- KR890005806U KR890005806U KR2019870013817U KR870013817U KR890005806U KR 890005806 U KR890005806 U KR 890005806U KR 2019870013817 U KR2019870013817 U KR 2019870013817U KR 870013817 U KR870013817 U KR 870013817U KR 890005806 U KR890005806 U KR 890005806U
- Authority
- KR
- South Korea
- Prior art keywords
- detection circuit
- line detection
- line
- circuit
- detection
- Prior art date
Links
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
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/71—Substation extension arrangements
- H04M1/715—Substation extension arrangements using two or more extensions per line
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M2201/00—Electronic components, circuits, software, systems or apparatus used in telephone systems
- H04M2201/02—Diodes
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M2201/00—Electronic components, circuits, software, systems or apparatus used in telephone systems
- H04M2201/04—Transistors
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Interface Circuits In Exchanges (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR2019870013817U KR900004646Y1 (ko) | 1987-08-19 | 1987-08-19 | 국선 감지회로 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR2019870013817U KR900004646Y1 (ko) | 1987-08-19 | 1987-08-19 | 국선 감지회로 |
Publications (2)
Publication Number | Publication Date |
---|---|
KR890005806U true KR890005806U (ko) | 1989-04-21 |
KR900004646Y1 KR900004646Y1 (ko) | 1990-05-25 |
Family
ID=19266629
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR2019870013817U KR900004646Y1 (ko) | 1987-08-19 | 1987-08-19 | 국선 감지회로 |
Country Status (1)
Country | Link |
---|---|
KR (1) | KR900004646Y1 (ko) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101617130B1 (ko) * | 2015-11-17 | 2016-04-29 | 노공환 | 수배전반(고압배전반, 저압배전반, 전동기제어반 및 분전반)의 간선에 인가된 전압을 감지하여 감전을 방지하는 전압감지장치 |
-
1987
- 1987-08-19 KR KR2019870013817U patent/KR900004646Y1/ko not_active IP Right Cessation
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101617130B1 (ko) * | 2015-11-17 | 2016-04-29 | 노공환 | 수배전반(고압배전반, 저압배전반, 전동기제어반 및 분전반)의 간선에 인가된 전압을 감지하여 감전을 방지하는 전압감지장치 |
Also Published As
Publication number | Publication date |
---|---|
KR900004646Y1 (ko) | 1990-05-25 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
A201 | Request for examination | ||
E701 | Decision to grant or registration of patent right | ||
REGI | Registration of establishment | ||
FPAY | Annual fee payment |
Payment date: 19930203 Year of fee payment: 4 |
|
LAPS | Lapse due to unpaid annual fee |