AT66862B - Telephone system for two-way communication on three wires. - Google Patents
Telephone system for two-way communication on three wires.Info
- Publication number
- AT66862B AT66862B AT66862DA AT66862B AT 66862 B AT66862 B AT 66862B AT 66862D A AT66862D A AT 66862DA AT 66862 B AT66862 B AT 66862B
- Authority
- AT
- Austria
- Prior art keywords
- wires
- telephone system
- way communication
- coils
- speech
- Prior art date
Links
Landscapes
- Monitoring And Testing Of Transmission In General (AREA)
Description
<Desc/Clms Page number 1>
FernsprechanlaQe für Doppetsprechen auf drei Drähten.
EMI1.1
spulen ausgebaut sind, zu einem dritten Sprechstromkreis usw. Auch hat man schon drei Drähte zu zwei Sprechstromkreisen verbunden. Dies ist jedoch bisher nur bei Freileitungen geschehen.
Eine Anwendung des Dreileitersystems auf Fernsprechkabel hat bisher nicht stattgefunden.
Die Grundlage des Erfindungsgegenstandes bildet nun die durch Berechnung und vielfache Versuche erwiesene Tatsache, dass das Dreileitersvstem sich auf Fernsprechkabel dann allgemein anwenden lässt, wenn die Adern zu dreien sorgfältig verseilt, wenn also durch Ver-
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Übertrager verwendet werden, die zu Doppelsprechspulen ausgebaut sind (Fig. 3).
In den Figuren bedeuten 1 und 2 die Sprechapparate des Stromkreises alb, 3 und 4 die- jenigen des Stromkreises c/a b. I und II sind Doppelsprechspulen.
Neu ist demnach die Anwendung des Dreileitersvtsems auf Fernsprechkabel und der Nachweis, dass in Drillingskabelll sowohl die Stromkreise der einzelnen Gruppen unter sich als auch
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den c-Leitern einen geringeren Querschnitt zu geben.
**WARNUNG** Ende DESC Feld kannt Anfang CLMS uberlappen**.
<Desc / Clms Page number 1>
Telephone system for two-way communication on three wires.
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coils are expanded, to a third speech circuit, etc. Three wires have already been connected to form two speech circuits. So far, however, this has only happened with overhead lines.
An application of the three-wire system to telephone cables has not yet taken place.
The basis of the subject matter of the invention now forms the fact, which has been proven through calculations and multiple tests, that the three-wire system can generally be applied to telephone cables when the cores are carefully stranded into three, i.e.
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Transformers are used, which are expanded to double voice coils (Fig. 3).
In the figures, 1 and 2 denote the speech sets of the circuit alb, 3 and 4 denote those of the circuit c / a b. I and II are dual coils.
What is new is the application of the three-wire system to telephone cables and the proof that in triplet cables both the circuits of the individual groups among themselves as well as
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to give the c-conductors a smaller cross-section.
** WARNING ** End of DESC field may overlap beginning of CLMS **.
Claims (1)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT66862T | 1913-06-26 |
Publications (1)
Publication Number | Publication Date |
---|---|
AT66862B true AT66862B (en) | 1914-10-26 |
Family
ID=3588775
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
AT66862D AT66862B (en) | 1913-06-26 | 1913-06-26 | Telephone system for two-way communication on three wires. |
Country Status (1)
Country | Link |
---|---|
AT (1) | AT66862B (en) |
-
1913
- 1913-06-26 AT AT66862D patent/AT66862B/en active
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