AT119404B - Remote signaling cable with conductive sleeve isolated from earth. - Google Patents
Remote signaling cable with conductive sleeve isolated from earth.Info
- Publication number
- AT119404B AT119404B AT119404DA AT119404B AT 119404 B AT119404 B AT 119404B AT 119404D A AT119404D A AT 119404DA AT 119404 B AT119404 B AT 119404B
- Authority
- AT
- Austria
- Prior art keywords
- earth
- conductive sleeve
- remote signaling
- signaling cable
- isolated
- Prior art date
Links
Landscapes
- Communication Cables (AREA)
Description
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Fernmeldelmbel mit leitender, von Erde isolierter Hülse.
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Um die Gleichheit der Fortpflanzungsgrössen herzustellen, ist es nun nicht erforderlich, dass die vier Konstanten R, L, 0 und G, wobei 0 die Kapazität und G die Ableitung für den Einheitsabschnitt ist, sämtlich berücksichtigt werden. Es genügt vielmehr, wenn das Produkt
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vernachlässigt werden kann. Auch beim zweiten Gliede spielt in der Regel GL nur die Rolle einer Korrektion gegenüber RO. Ferner hat das Produkt LG bei der Hülle nach praktisch gewonnenen Erfahrungen gewöhnlich genügend genau den gleichen Wert wie bei den Adern, so dass man meistens nur dem Widerstand der Hülle einen der vorhandenen Kapazität der Hülle entsprechenden Wert zu geben braucht.
Haben z. B. die Adern durchschnittlich die Werte L=10-2H, 0 ==6-10-8F, =10 9 und G = 10-68 so ist Ra = 6#10-7 und GL = 10-8. Wenn also die Hülle die Kapazität Oll = 2'10-7 F für
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PATENT-ANSPRÜCHE :
1. Fernmeldekabel, dadurch gekennzeichnet, dass die elektrischen Konstanten. der Hülle und der Adern derart beschaffen sind, dass die Fortpflanzungsgrösse der elektrischen Störungen auf der Hülle praktisch gleich der Fortpflanzungsgrösse auf den Adern ist.
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Telecommunication bell with conductive sleeve isolated from earth.
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In order to establish the equality of the propagation quantities, it is not necessary that the four constants R, L, 0 and G, where 0 is the capacitance and G is the derivative for the unit section, are all taken into account. Rather, it is enough if the product
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can be neglected. In the second term, too, GL usually only plays the role of a correction to RO. Furthermore, based on practical experience, the product LG usually has exactly the same value for the case as for the wires, so that in most cases only the resistance of the case needs to be given a value that corresponds to the existing capacity of the case.
Have z. B. the cores average the values L = 10-2H, 0 == 6-10-8F, = 10 9 and G = 10-68 so Ra = 6 # 10-7 and GL = 10-8. So if the envelope has the capacity Oll = 2'10-7 F for
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PATENT CLAIMS:
1. Telecommunication cable, characterized in that the electrical constants. the sheath and the veins are such that the magnitude of propagation of the electrical interference on the sheath is practically equal to the magnitude of propagation on the veins.
Claims (1)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE119404X | 1928-03-03 |
Publications (1)
Publication Number | Publication Date |
---|---|
AT119404B true AT119404B (en) | 1930-10-25 |
Family
ID=5656034
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
AT119404D AT119404B (en) | 1928-03-03 | 1928-07-02 | Remote signaling cable with conductive sleeve isolated from earth. |
Country Status (1)
Country | Link |
---|---|
AT (1) | AT119404B (en) |
-
1928
- 1928-07-02 AT AT119404D patent/AT119404B/en active
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