DE268551C - - Google Patents
Info
- Publication number
- DE268551C DE268551C DENDAT268551D DE268551DA DE268551C DE 268551 C DE268551 C DE 268551C DE NDAT268551 D DENDAT268551 D DE NDAT268551D DE 268551D A DE268551D A DE 268551DA DE 268551 C DE268551 C DE 268551C
- Authority
- DE
- Germany
- Prior art keywords
- coils
- cores
- circuit
- double
- transformers
- 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.)
- Active
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M7/00—Arrangements for interconnection between switching centres
- H04M7/08—Arrangements for interconnection between switching centres for phantom working
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Sub-Exchange Stations And Push- Button Telephones (AREA)
- Insulated Conductors (AREA)
Description
KAISERLICHESIMPERIAL
PATENTAMT.PATENT OFFICE.
Es ist bereits bekannt, zum Zwecke des Doppel- und Mehrfachfernsprechens zwei und mehr Doppelleitungen über Doppelsprechspulen oder Übertrager, die zu Doppelsprechspulen ausgebaut sind, zu einem dritten Sprechstromkreise usw. zu verbinden. Auch hat man schon drei Drähte zu zwei Sprechstromkreisen verbunden. Dies ist jedoch bisher nur bei Freileitungen geschehen. Eine AnwendungIt is already known for the purpose of dual and multiple telephony two and more double lines via double intercom coils or transformers leading to double intercom coils are expanded to connect to a third voice circuit, etc. You also have three wires to two speech circuits tied together. So far, however, this has only happened with overhead lines. An application
ίο des Dreileitersystems auf Fernsprechkabel hat bisher nicht stattgefunden.ίο the three-wire system on telephone cables has not yet taken place.
Die Grundlage der Erfindung bildet nun die durch Berechnungen und vielfache Versuche erwiesene Tatsache, daß das Dreileitersystem sich auf Fernsprechkabel dann allgemein anwenden läßt, wenn die Adern zu dreien sorgfältig verseilt, wenn also durch Verseilung aus den Adern Drillingsgruppen gebildet werden, wie in Fig. 2 angedeutet ist. Solche Kabel sind frei von Induktionsstörungen.The basis of the invention is now based on calculations and multiple experiments proven fact that the three-wire system will then generally apply to telephone cables leaves out if the cores are carefully stranded in threes, i.e. if by stranding triplet groups are formed on the veins, as indicated in FIG. 2. Such cables are free from induction disorders.
Die drei Adern jeder Gruppe werden in an sich bekannter Weise über Doppelsprechspulen zu zwei Sprechstromkreisen verbunden (Fig. 1 und 2). Zu der Schaltung können auch Übertrager verwandt werden, die zu Doppelsprechspulen ausgebaut sind (Fig. 3).The three cores of each group are in a known manner via double voice coils connected to two speech circuits (Fig. 1 and 2). Transformers can also be added to the circuit are used, which are expanded to double voice coils (Fig. 3).
In den Figuren bedeuten 1 und 2 die Sprechapparate des Stromkreises a, b, 3 und 4 diejenigen des Stromkreises c, a, b. I und II sind Doppelsprechspulen.In the figures, 1 and 2 denote the speech sets of the circuit a, b, 3 and 4 those of the circuit c, a, b. I and II are dual coils.
Neu ist demnach die Anwendung des Dreileitersystems auf Fernsprechkabel und . der Nachweis, daß in Drillingskabeln sowohl die Stromkreise der einzelnen Gruppen unter sich als auch gegenüber denjenigen der anderen Gruppen ohne Induktionsstörungen sind.The application of the three-wire system to telephone cables and. the Proof that in triplet cables both the circuits of the individual groups are among themselves as well as those of the other groups without induction disorders.
Dieser Zustand wird nicht beeinträchtigt, wenn den c-Leitern ein anderer Querschnitt als den a- undx6-Leitern gegeben wird. Ist es also wegen Raum- oder Materialersparnis erwünscht, so steht nichts im Wege, den c-Leitern einen geringeren Querschnitt zu geben. This condition is not affected if the c-conductors are given a different cross-section than the a- and x- 6-conductors. If it is desired to save space or material, nothing stands in the way of giving the c-conductors a smaller cross-section.
Claims (1)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB191320822T | 1913-09-15 |
Publications (1)
Publication Number | Publication Date |
---|---|
DE268551C true DE268551C (en) |
Family
ID=32372429
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DENDAT268551D Active DE268551C (en) | 1913-09-15 |
Country Status (2)
Country | Link |
---|---|
DE (1) | DE268551C (en) |
GB (1) | GB191320822A (en) |
-
0
- DE DENDAT268551D patent/DE268551C/de active Active
-
1913
- 1913-09-15 GB GB191320822D patent/GB191320822A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
GB191320822A (en) | 1913-11-20 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE268551C (en) | ||
DE515052C (en) | Ribbon cables for telephone use | |
DE530058C (en) | Phantom circuit, especially for telephone purposes | |
DE531164C (en) | Device for suppressing disturbance currents, in particular crosstalk in speech or signal circuits by means of rectifier arrangements | |
AT66862B (en) | Telephone system for two-way communication on three wires. | |
DE208495C (en) | ||
DE566701C (en) | Circuit for telephone circuits housed in a multi-phase power cable with symmetrically distributed conductors | |
DE379113C (en) | Line arrangement for telecommunications networks of relatively small local extent | |
DE568303C (en) | Transmitters, relay coils or the like with several pairs of symmetrical windings | |
AT143867B (en) | Telecommunication cables for laying in telephone, telegraph or repeater offices. | |
DE465430C (en) | Pupinized remote cable | |
DE2512562B2 (en) | Symmetrical hybrid connection for a telephone set | |
AT130539B (en) | Circuit arrangements for telephone systems. | |
DE539811C (en) | Circuit for multiple use of lines with incomplete phantom use | |
DE523927C (en) | Process for the manufacture of telecommunication cables with reduced crosstalk | |
DE434301C (en) | Process for the manufacture of ribbon cables | |
AT126041B (en) | Telephone cable equalization. | |
DE725431C (en) | Cable system, which contains both D.M. fours and star fours | |
DE842661C (en) | Procedure to compensate for the differences in the attenuation of the individual line pairs of carrier frequency cables | |
DE715550C (en) | ||
DE181280C (en) | ||
DE199462C (en) | ||
DE424237C (en) | Method of making a telephone magnet system | |
AT116284B (en) | Method for compensating the couplings between the speech circuits of neighboring quad units, especially in telecommunications cables. | |
DE649159C (en) | Process for the manufacture of telecommunication cables with reduced crosstalk |