DE500306C - Procedure for throttling stub lines for high frequency telephony on power lines - Google Patents

Procedure for throttling stub lines for high frequency telephony on power lines

Info

Publication number
DE500306C
DE500306C DED50735D DED0050735D DE500306C DE 500306 C DE500306 C DE 500306C DE D50735 D DED50735 D DE D50735D DE D0050735 D DED0050735 D DE D0050735D DE 500306 C DE500306 C DE 500306C
Authority
DE
Germany
Prior art keywords
lines
procedure
stub
loop
throttling
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
DED50735D
Other languages
German (de)
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.)
Deutsche Telephonwerke und Kabelindustrie AG
Original Assignee
Deutsche Telephonwerke und Kabelindustrie 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 Deutsche Telephonwerke und Kabelindustrie AG filed Critical Deutsche Telephonwerke und Kabelindustrie AG
Priority to DED50735D priority Critical patent/DE500306C/en
Application granted granted Critical
Publication of DE500306C publication Critical patent/DE500306C/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems
    • H04B3/54—Systems for transmission via power distribution lines
    • H04B3/56—Circuits for coupling, blocking, or by-passing of signals

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Supply And Distribution Of Alternating Current (AREA)

Description

Verfahren zur Abdrosselung von Stichleitungen für Hochfrequenztelephonie auf Starkstromleitungen Bei der Benutzung von Starkstrom-, insbesondere Hochspannungsleitungen zur Hochfrequenztelephonie, machen vorhandene Abzweig- und Stichleitungen Schwierigkeiten insofern, als sie die Hochfriequenzenergie an ungewollte Stellen weiterleiten und Energievcrluste herbeiführen. Zur Unschädlichmachung derartiger Stichleitungen werden. dieselben durch Hochfrequenzdrosselspulen von der Hauptleitung abgetrennt. Die Drosselspulen müssen, um einte genügende Sperrwirkung zu erzielen, eine erhebliche Induktivität aufweisen und gleichzeitig, da sie von Hochspannung durchflossen werden, hinsichtlich ihres Leiterquerschnittes dem Hochspannu bsbetriebsstrom angepaßt stein. Demgemäß sind die Anschaffungskosten hoch und der Anwendung derartiger Drosseln ,enge Grenzen gezogen.Method for throttling stub lines for high-frequency telephony on power lines When using power lines, especially high voltage lines for high-frequency telephony, existing branch lines and stub lines cause difficulties insofar as they pass the high frequency energy to unwanted places and Induce energy losses. To render such stub lines harmless. the same separated from the main line by high frequency reactors. The reactors must, in order to achieve a sufficient blocking effect, a considerable inductance have and at the same time, since they are traversed by high voltage, with regard to their conductor cross-section adapted to the Hochspannu bsbetriebsstrom stone. Accordingly the acquisition costs are high and the use of such chokes, narrow limits drawn.

Gemäß der Erfindung wird in die abzusperrende Stichleitung in der Nähe der Abzweigsteile eine U-förmige Drahtschleife eingeschaltet, die mit weit geringeren Anschaffungskosten die Drosselspulen ersetzt, zumal sie als gerader Draht unmittelbar auf dem bestehenden Hochspannungsgestänge selbst unterhalb der vorhandenen Hochspannungsleitungen verlegt werden kann.According to the invention, in the stub to be shut off in the Near the branch pieces a U-shaped wire loop is switched on, which with far Choke coils replaced at lower cost, especially since they are available as straight wire directly on the existing high-voltage linkage itself below the existing one High voltage lines can be laid.

Die Länge der Schleife wird zweckmäßig so bemessen, daß sie ein ungerades Vielfaches einer Viertelwellenlänge des Hochfrequenzverkehrs beträgt. Alsdann sperrt sie nicht nur die Grundwelle, sondern auch die harmonischen Oberwellen der Grundwelle ab. Dies ermöglicht, daß man auf der Hauptleitung in der einen Richtung die Grundwelle der Trägerfrequenz, in der anderen die erste harmonische -Oberwelle benutzen und beide durch dieselbe Schleife der Stichleitung abdrosseln kann.The length of the loop is expediently dimensioned so that it is an odd Is a multiple of a quarter wavelength of high frequency traffic. Then locks they not only the fundamental wave, but also the harmonic harmonics of the fundamental wave away. This makes it possible to have the fundamental wave in one direction on the main line the carrier frequency in which the others use the first harmonic and can throttle both through the same loop of the branch line.

Die Schleife hat den Leiterquerschnitt der Hochspannungsleitung und wird vom Betriebsstrom durchflossen.The loop has the cross-section of the high-voltage line and is traversed by the operating current.

Um eine übermäßige Länge der Schleife zu vermeiden, werden erfindungsgemäß in dieselbe in gewissen Abständen, kleine Drosselspulen @eingeschaltet. Da diese nur einen kleinen Teil der Induktivität zu übernehmen brauchen, sind ihre Herstellungskosten nicht hoch, so daß sie keine wesentliche Verteuerung bedeuten.In order to avoid an excessive length of the loop, according to the invention in the same at certain intervals, small choke coils @ switched on. This one only need to take over a small part of the inductance is its production costs not high, so that they do not mean any substantial increase in price.

Claims (3)

PATENTANSPRÜCHE: i. Verfahren. zur Abdrosselung von Stichleitungen für Hochfrequenztelephonie auf Starkstromleitungen, dadurch gekennzeichnet, daß in der Nähe der Abzweigstelle in die Stichleitung eine U-förmige Drahtschleife, deren Länge das ungerade Vielfache einer Viertel-Wellenlänge des Hochfrequenzverkiehrs (Trägerfrequenz) beträgt, eingeschaltet wird. ,g. PATENT CLAIMS: i. Procedure. for the throttling of stub lines for high-frequency telephony on power lines, characterized in that a U-shaped wire loop, the length of which is an odd multiple of a quarter wavelength of the high-frequency traffic (carrier frequency), is switched on near the junction in the stub line. ,G. Verfahren nach Anspruch i, dadurch gekennzeichnet, daß die Schleife auf dem bestehenden Hochspannungsgestänge, unterhalb der Hochspannungsleitungen verlegt wird. Procedure according to Claim i, characterized in that the loop on the existing high-voltage linkage, is laid below the high-voltage lines. 3. Verfahren nach Anspruch i, dadurch gekennzeichnet, daß zwecks Verminderung der Schleifenlänge in die Schleife in gewissen Abständen Drosselspulen mit kleiner Induktivität eingeschaltet werden.3. The method according to claim i, characterized in that in order to reduce the loop length in the loop Choke coils with low inductance are switched on at certain intervals.
DED50735D 1926-06-17 1926-06-17 Procedure for throttling stub lines for high frequency telephony on power lines Expired DE500306C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DED50735D DE500306C (en) 1926-06-17 1926-06-17 Procedure for throttling stub lines for high frequency telephony on power lines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DED50735D DE500306C (en) 1926-06-17 1926-06-17 Procedure for throttling stub lines for high frequency telephony on power lines

Publications (1)

Publication Number Publication Date
DE500306C true DE500306C (en) 1930-06-26

Family

ID=7052873

Family Applications (1)

Application Number Title Priority Date Filing Date
DED50735D Expired DE500306C (en) 1926-06-17 1926-06-17 Procedure for throttling stub lines for high frequency telephony on power lines

Country Status (1)

Country Link
DE (1) DE500306C (en)

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