RO80920B1 - Circuit de supraveghere a starii unei linii telefonice, cu cuplaj direct protejat - Google Patents
Circuit de supraveghere a starii unei linii telefonice, cu cuplaj direct protejatInfo
- Publication number
- RO80920B1 RO80920B1 RO100370A RO10037080A RO80920B1 RO 80920 B1 RO80920 B1 RO 80920B1 RO 100370 A RO100370 A RO 100370A RO 10037080 A RO10037080 A RO 10037080A RO 80920 B1 RO80920 B1 RO 80920B1
- Authority
- RO
- Romania
- Prior art keywords
- circuit
- line
- telephone line
- condition
- direct coupling
- Prior art date
Links
- 230000008878 coupling Effects 0.000 title 1
- 238000010168 coupling process Methods 0.000 title 1
- 238000005859 coupling reaction Methods 0.000 title 1
- 239000003990 capacitor Substances 0.000 abstract 2
- 230000005540 biological transmission Effects 0.000 abstract 1
- 230000001066 destructive effect Effects 0.000 abstract 1
- 238000012544 monitoring process Methods 0.000 abstract 1
- 210000000056 organ Anatomy 0.000 abstract 1
- 239000004065 semiconductor Substances 0.000 abstract 1
Landscapes
- Interface Circuits In Exchanges (AREA)
- Emergency Protection Circuit Devices (AREA)
Abstract
Inventia se refera la un circuit de supraveghere a starii unei linii telefonice, caracterizat prin aceea ca utilizeaza o dioda semiconductoare în sensul conductiei, în sensul curentului de linie, conectata între doua diode montate liniei, în asa fel încît sa se protejeje circuitele centralei fata de actiunea distructiva a oricarei tensiuni perturbatoare, iar pentru transmiterea infoematiei de stare a liniei se utilizeaza un grup de trei rezistente si un condensator, cuplate în punctul de supraveghere printr-o dioda si care permite prin cele doua constante de timp de încarcare, respectiv descarcare a condensatorului ca schimbarile de stare care au o durata mai mica decît valoarea data sa nu fie transmise spre organele centralei printr-o poarta sau un circuit cu trei stari.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| RO100370A RO80920B1 (ro) | 1980-03-05 | 1980-03-05 | Circuit de supraveghere a starii unei linii telefonice, cu cuplaj direct protejat |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| RO100370A RO80920B1 (ro) | 1980-03-05 | 1980-03-05 | Circuit de supraveghere a starii unei linii telefonice, cu cuplaj direct protejat |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| RO80920A2 RO80920A2 (ro) | 1983-02-15 |
| RO80920B1 true RO80920B1 (ro) | 1983-02-28 |
Family
ID=20108155
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| RO100370A RO80920B1 (ro) | 1980-03-05 | 1980-03-05 | Circuit de supraveghere a starii unei linii telefonice, cu cuplaj direct protejat |
Country Status (1)
| Country | Link |
|---|---|
| RO (1) | RO80920B1 (ro) |
-
1980
- 1980-03-05 RO RO100370A patent/RO80920B1/ro unknown
Also Published As
| Publication number | Publication date |
|---|---|
| RO80920A2 (ro) | 1983-02-15 |
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