DE565171C - Procedure for the elimination of interfering noises in communication cables along power lines - Google Patents

Procedure for the elimination of interfering noises in communication cables along power lines

Info

Publication number
DE565171C
DE565171C DE1930565171D DE565171DD DE565171C DE 565171 C DE565171 C DE 565171C DE 1930565171 D DE1930565171 D DE 1930565171D DE 565171D D DE565171D D DE 565171DD DE 565171 C DE565171 C DE 565171C
Authority
DE
Germany
Prior art keywords
power lines
procedure
elimination
communication cables
along power
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
Application number
DE1930565171D
Other languages
German (de)
Inventor
Dr Hans Jordan
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
AEG AG
Original Assignee
AEG AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by AEG AG filed Critical AEG AG
Application granted granted Critical
Publication of DE565171C publication Critical patent/DE565171C/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems
    • H04B3/02—Details
    • H04B3/32—Reducing cross-talk, e.g. by compensating

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Locating Faults (AREA)
  • Communication Cables (AREA)

Description

Verfahren zur Beseitigung von Störgeräuschen in Fernmeldekabeln längs Starkstromleitungen Für die Größe der Störgeräusche in Fernmeldekabeln, die von parallel laufenden Starkstromleitungen hervorgerufen werden, sind bekanntlich nur die Kapazitätsdifferenzen der Hin- und Rückleitung gegen die nächstinneren und nächstäußeren Lagen maßgebend. Daher wurden bei den bisher üblichen Verfahren die Kapazitätsdifferenzen der Sprechkreise sämtlicher Lagen ausgeglichen. Es sind auch bereits Meßverfahren vorgeschlagen «-orden, um diese Kapazitätsdifferenzen für jeden Sprechkreis bestimmen zu können.Procedure for eliminating noise in telecommunication cables lengthways Power lines For the size of the noise in telecommunication cables coming from Power lines running in parallel are only known to be caused the differences in capacity of the outward and return lines against the next inner and next outer Locations are decisive. Therefore, in the previously usual procedures, the capacity differences were the speaking circles of all situations balanced. There are already measurement methods suggested «order to determine these capacity differences for each speaking group to be able to.

Die Erfindung geht nun von der Beobachtung aus, daß in allen praktisch in Frage kommenden Fällen die Potentialunterschiede der einzelnen Lagen gegeneinander nur klein sind gegenüber dem Potentialunterschied zwischen der äußersten (direkt unter dem Bleimantel liegenden) Lage und dem Bleimantel. Dieser Umstand hat zur Folge, daß in den Sprechkreisen der inneren Lagen wegen der geringen Potentialunterschiede gegenüber deri Nachbarlagen praktisch überhaupt ]<eine Störgeräusche auftreten können. Störgeräusche zeigen sich vielmehr immer nur in der äußersten Lage. Diese sind weiterhin ausschließlich bestimmt durch die Kapazitätsdifferenzen gegen den Bleimantel und in vernachlässigbar kleinem Maße durch die Kapazitätsdifferenzen nach der nächstinneren Lage, da der Potentialunterschied nach dem Bleimantel hin erheblich größer ist als nach der nächstinneren Lage.The invention is based on the observation that in all practical in the cases in question, the potential differences between the individual layers are only small compared to the potential difference between the outermost (direct under the lead sheath) and the lead sheath. This fact has to Consequence that in the speech circles of the inner layers because of the small potential differences compared to the neighboring locations practically at all] <an interfering noise occurs can. Rather, interfering noises only ever appear in the extreme position. These are still exclusively determined by the capacity differences compared to the Lead sheath and to a negligible extent due to the difference in capacitance to the next inner layer, as the potential difference is towards the lead sheath is considerably larger than after the next inner layer.

Erfindungsgemäß werden nun diese. nach bekannten Verfahren gemessenen Kapaitätsdifferenzen der Sprechkreise in der äußersten Lage gegenüber dem Bleimantel durch Kondensatoren ausgeglichen. Es gelingt auf diese Weise, wenn der Ausgleich in hinreichend kurzen Abständen ausgeführt wird, ein vollkommen störungsfreies Kabel zu erhalten.According to the invention these are now. measured by known methods Differences in capacity of the speech circuits in the outermost position compared to the lead jacket balanced by capacitors. It succeeds this way when the balance is carried out at sufficiently short intervals, a completely interference-free cable to obtain.

An Stelle des Einbaus von Kondensatoren können natürlich auch Kreuzungen in den Verbindungsstellen oder andere äquivalente Mittel zur Veränderung der Teilkapazität einer Ader gegenüber dem Bleimantel angewendet werden.Instead of installing capacitors, crossings can of course also be used in the connection points or other equivalent means of changing the partial capacity a wire opposite the lead sheath.

Claims (1)

PATENTANSPRUCH: Verfahren zur Beseitigung von durch benachbarte Starkstromleitungen hervorgerufenen Störgeräuschen in Fernmeldekabeln durch Ausgleich der Kapazitätsdifferenzen der Sprechkreise gegen die benachbarten Lagen bzw. gegen umgebende leitende Hüllen, dadurch gekennzeichnet, daß nur die Käpazitätsdifferenzen der Sprechkreise der äußersten Lage gegenüber dem Bleimantel, z. B. durch Kondensatoren, mittels Kreuzungen oder durch andere äquivalente Mittel zur Veränderung der Teilkapazität einer Ader gegen den Bleimantel, abschnittweise ausgeglichen werden. PATENT CLAIM: A method for eliminating interference noises in telecommunications cables caused by neighboring power lines by compensating for the differences in capacitance of the speech circuits against the neighboring layers or against the surrounding conductive sheaths B. by capacitors, by means of crossings or by other equivalent means for changing the partial capacitance of a wire against the lead sheath, are compensated in sections.
DE1930565171D 1932-07-01 1930-05-28 Procedure for the elimination of interfering noises in communication cables along power lines Expired DE565171C (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEA66450D DE601073C (en) 1932-07-01 1932-07-01 Procedure for eliminating interference noises in telecommunication cables caused by neighboring power lines

Publications (1)

Publication Number Publication Date
DE565171C true DE565171C (en) 1932-11-26

Family

ID=6944133

Family Applications (2)

Application Number Title Priority Date Filing Date
DE1930565171D Expired DE565171C (en) 1932-07-01 1930-05-28 Procedure for the elimination of interfering noises in communication cables along power lines
DEA66450D Expired DE601073C (en) 1932-07-01 1932-07-01 Procedure for eliminating interference noises in telecommunication cables caused by neighboring power lines

Family Applications After (1)

Application Number Title Priority Date Filing Date
DEA66450D Expired DE601073C (en) 1932-07-01 1932-07-01 Procedure for eliminating interference noises in telecommunication cables caused by neighboring power lines

Country Status (1)

Country Link
DE (2) DE565171C (en)

Also Published As

Publication number Publication date
DE601073C (en) 1934-08-07

Similar Documents

Publication Publication Date Title
DE60015325T2 (en) OFFSET COMPENSATION IN ANALOG-DIGITAL TOURISM
DE565171C (en) Procedure for the elimination of interfering noises in communication cables along power lines
CH154317A (en) Procedure for eliminating interference in telecommunication cables.
DE737752C (en) Telecommunication cables
DE681786C (en) Remote signaling cable influenced by neighboring power lines, in which individual remote signaling circuits are branched off on the affected cable route
DE536907C (en) Method for manufacturing a telecommunication cable
DE510467C (en) Procedure to compensate for the coupling between quadruple lines and trunk or quadruple lines
DE554711C (en) Procedure for eliminating capacitive crosstalk interference when laying pupin cables
DE420747C (en) Method for reducing crosstalk in telephone cables
DE630211C (en) Method for reducing the interference in submarine telecommunications cables caused by earth imbalances
DE679756C (en) Process for the production of telephone cables with reduced secondary coupling and with speech circuits with particularly high cross-talk attenuation
DE842661C (en) Procedure to compensate for the differences in the attenuation of the individual line pairs of carrier frequency cables
DE624236C (en) Process for the manufacture of telecommunication cables with reduced crosstalk
AT130109B (en) Procedure for crosstalk compensation in telecommunications cables.
DE531059C (en) High-pair telecommunication cable
DE522036C (en) Process for the manufacture of telecommunication cables with reduced crosstalk
DE665999C (en) Procedure for eliminating crosstalk or cross-talk between the trunk and phantom circuit in phantom-used telecommunication lines
DE903709C (en) Method for equalizing coupling vectors in telecommunications lines
DE552892C (en) Arrangement for influencing the distribution of voltage in the vicinity of high-voltage lines
DE626069C (en) System for the transmission of telecommunication currents, in particular carrier frequency currents, via four-wire telecommunication cables
DE587305C (en) Procedure to compensate for the capacitance asymmetries of the core groups of telecommunication cables
DE86013C (en)
AT100639B (en) Telephone cable splice to compensate for the asymmetries.
DE398196C (en) Procedure to reduce over-talking and talking in two-way telephone lines or two-way communication
DE532669C (en) Facility for practicing the procedure for pre-measuring wire groups