AT160246B - Circuit arrangement for regulating the amplitude of telecommunications currents. - Google Patents
Circuit arrangement for regulating the amplitude of telecommunications currents.Info
- Publication number
- AT160246B AT160246B AT160246DA AT160246B AT 160246 B AT160246 B AT 160246B AT 160246D A AT160246D A AT 160246DA AT 160246 B AT160246 B AT 160246B
- Authority
- AT
- Austria
- Prior art keywords
- amplitude
- regulating
- currents
- control device
- telecommunications
- Prior art date
Links
- 230000001105 regulatory effect Effects 0.000 title description 3
- 238000000034 method Methods 0.000 claims description 3
- 230000001627 detrimental effect Effects 0.000 description 1
- 238000005562 fading Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Landscapes
- Transmitters (AREA)
Description
<Desc/Clms Page number 1>
Sehaltungsanordnung zur Regelung der Amplitude von Fernmeldeströmen.
EMI1.1
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grad im eingepegelten Zustand nicht mehr beeinflusst. Sie soll ja im Gegensatz zu den Fällen, wo Fadingregelung durch Röhren mit Exponentialkennlinie erreicht werden soll, nicht die Einpegelung selbst begrenzen, sondern nur während des Regelvorganges den Verstärker vor schädlicher Übersteuerung schützen. Die Pegelbegrenzung erfolgt allein durch das Relais 15, Fig. 2, das über 15'und den Impulsgeber 12 der Fig. 3 den Drehmagneten 13 eines Schrittschaltwerkes steuert. Durch dieses Schrittschaltwerk werden verschiedene Stufen des Eingangspotentiometers 14 eingestellt. Das Relais 15 wird lediglich von dem gleichgerichteten Zwisehenfrequenzstrom betrieben.
Wie ein Vergleich der Kurven 7 und 6 der Fig. 1 zeigt, ist durch die Einführung der Schiebespannung der dem Abfallstrom 1 des Pegelrelais 15 entsprechende Pegel unverändert geblieben.
Obwohl die Erfindung in erster Linie für die Pegelregelung bei der trägerfrequenten Nachrichten- übermittlung über Starkstromleitungen von besonderer Bedeutung ist, bleibt ihr Anwendungsgebiet nicht auf derartige Anlagen beschränkt. Die Erfindung kann überall dort verwendet werden, wo mit Hilfe eines Trägerstromes die Restdämpfung einer Leitung auf einen konstanten Wert eingestellt werden soll.
PATENT-ANSPRÜCHE :
1. Schaltungsanordnung zur Regelung der Amplitude von Fermneldeträgerströmen auf ein vorgegebenes Mass, dadurch gekennzeichnet, dass eine für den Regelvorgang schädliche Übersteuerung des durch eine träge arbeitende Pegelregelungseinrichtung geregelten Verstärkers durch eine auf den gleichen Verstärker gleichzeitig einwirkende trägheitslos arbeitende Regeleinrichtung verhindert ist.
<Desc / Clms Page number 1>
Arrangement for regulating the amplitude of communication currents.
EMI1.1
<Desc / Clms Page number 2>
degree is no longer influenced in the leveled state. In contrast to the cases where fading control is to be achieved by tubes with an exponential characteristic, it should not limit the leveling itself, but only protect the amplifier from harmful overload during the control process. The level is limited solely by the relay 15, FIG. 2, which controls the rotary magnet 13 of a stepping mechanism via 15 ′ and the pulse generator 12 of FIG. 3. Different levels of the input potentiometer 14 are set by this step-by-step mechanism. The relay 15 is operated only by the rectified two-frequency current.
As a comparison of curves 7 and 6 in FIG. 1 shows, the level corresponding to the waste current 1 of the level relay 15 has remained unchanged due to the introduction of the shift voltage.
Although the invention is primarily of particular importance for level control in carrier-frequency communication via power lines, its field of application is not restricted to systems of this type. The invention can be used anywhere where the residual attenuation of a line is to be set to a constant value with the aid of a carrier current.
PATENT CLAIMS:
1. A circuit arrangement for regulating the amplitude of Fermnel carrier currents to a predetermined level, characterized in that an overdrive of the amplifier controlled by a slow-acting level control device, which is detrimental to the control process, is prevented by a control device that simultaneously acts on the same amplifier without inertia.
Claims (1)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE160246T | 1936-08-26 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| AT160246B true AT160246B (en) | 1941-03-25 |
Family
ID=29413171
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AT160246D AT160246B (en) | 1936-08-26 | Circuit arrangement for regulating the amplitude of telecommunications currents. |
Country Status (1)
| Country | Link |
|---|---|
| AT (1) | AT160246B (en) |
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0
- AT AT160246D patent/AT160246B/en active
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