DE519738C - Circuit arrangement for controlling the transmission rate for intercom systems or for amplifiers in telephone lines - Google Patents
Circuit arrangement for controlling the transmission rate for intercom systems or for amplifiers in telephone linesInfo
- Publication number
- DE519738C DE519738C DEH123260D DEH0123260D DE519738C DE 519738 C DE519738 C DE 519738C DE H123260 D DEH123260 D DE H123260D DE H0123260 D DEH0123260 D DE H0123260D DE 519738 C DE519738 C DE 519738C
- Authority
- DE
- Germany
- Prior art keywords
- transformer
- magnetron
- winding
- circuit
- control
- 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
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B3/00—Line transmission systems
- H04B3/02—Details
- H04B3/20—Reducing echo effects or singing; Opening or closing transmitting path; Conditioning for transmission in one direction or the other
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Transmitters (AREA)
Description
Zur Steuerung des Übertragungsmaßes von Übertragungssystemen, insbesondere für die Zwecke der Echo- und Rückkopplungssperrung, wurden bisher entweder elektromagnetische Relais verwendet, die jedoch den Nachteil einer verhältnismäßig großen Ansprechzeit besitzen, oder Entladungsröhren mit Steuergit.ter, die zwar trägheitsfrei arbeiten, aber hinsichtlich ihrer Schaltung verhältnismäßig unbequem zu verwenden sind, da der Steuergitterkreis immer galvanisch mit dem Heiz- und Anodenkreis verbunden, ist.To control the transmission rate of transmission systems, especially for the Purposes of echo and feedback blocking have so far been either electromagnetic Relays are used, but this has the disadvantage of a relatively long response time or discharge tubes with control grids that work without inertia, but are relatively inconvenient to use in terms of their circuit, since the Control grid circuit is always galvanically connected to the heating and anode circuit.
Diese Nachteile werden gemäß der Erfindung dadurch vermieden, daß mit den zu steuernden Stromkreisen Entladungsstrecken von Magnetronröhren verbunden sind, deren Magnetwicklung von den Steuerströmen durchflossen wird. Diese Magnetronröhren arbeiten praktisch ebenso trägheitsfrei wieThese disadvantages are avoided according to the invention in that with the to controlling circuits are connected to discharge paths of magnetron tubes, whose Magnet winding is traversed by the control currents. These magnetron tubes work practically as free of inertia as
ao die für den gleichen Zweck bisher benutzten Dreielektrodenröhren, haben aber den wesentlichen Vorteil, daß die steuernden Magnetwicklungen mit den Kathoden- und Anodenkreisen der Röhren nicht in unmittelbar leitender Verbindung stehen.ao the three-electrode tubes previously used for the same purpose, but have the essential Advantage that the controlling magnet windings with the cathode and anode circuits the tubes are not in direct contact with electricity.
Die Zeichnung stellt zwei Ausführungsformen der Erfindung dar. The drawing shows two embodiments of the invention.
Ein Ausführungsbeispiel für eine drahtlose Fernsprechanlage mit Anschluß an eineFernleitung für den Verkehr in zwei entgegengesetzten Richtungen zeigt Abb. 1 in schematischer Darstellung.An embodiment of a wireless telephone system connected to a trunk line Fig. 1 shows a schematic for traffic in two opposite directions Depiction.
Wird über den Empfänger ff gesprochen, so fließen die Empfangsströme teils über die Fernsprechleitung c zum Teilnehmer d, teils über das Abgleichmittel b, welches zur Nachbildung des Empfängers α in unten beschriebener Weise dient. Die beiden Primärwicklungen e und / des Differentialübertragers g werden also durch die Empfangsströme gleichsinnig durchflossen, so daß eine Übertragung der Empfangsströme in den mit der Sekundärwicklung h verbundenen Kreis erfolgt. Die Ströme im Sekundärkreis werden mittels des Gleichrichters/, der in bekannter Weise mit Verstärkern verbunden sein kann, gleichgerichtet und der Magnetwicklung k eines Magnetrons / zugeführt. Die Beeinflussung der Entladungsstrecke in der Magnetronröhre erfolgt derart, daß der Elektronenstrom im Magnetron herabgesetzt und der Stromkreis des Senders m vollständig oder nahezu vollständig unterbrochen wird. Dies hat zur Folge, daß die in der Sekundärwicklung des Übertragers η induzierten Spannungen auf den Sender m nicht einwirken. Dieser Sperrzustand des Senders m bleibt jedoch nur während des Empfangs aufrechterhalten, da bei Beendigung des Empfangs der Normalzustand im Entladungsweg des Magnetrons/ wiederhergestellt wird. Spricht dagegen der Teilnehmer^ über die Fernleitung c, so teilt sich der auszusendende Strom zu gleichen Teilen über den Empfänger α und das Abgleich-If the receiver ff is used, the received currents flow partly via the telephone line c to subscriber d, partly via the adjustment means b, which is used to simulate the receiver α in the manner described below. The two primary windings e and / of the differential transformer g are therefore traversed in the same direction by the received currents, so that the received currents are transmitted into the circuit connected to the secondary winding h. The currents in the secondary circuit are rectified by means of the rectifier /, which can be connected to amplifiers in a known manner, and fed to the magnetic winding k of a magnetron /. The discharge path in the magnetron tube is influenced in such a way that the electron current in the magnetron is reduced and the circuit of the transmitter m is completely or almost completely interrupted. As a result, the voltages induced in the secondary winding of the transformer η do not act on the transmitter m. This blocked state of the transmitter m is only maintained during reception, since the normal state in the discharge path of the magnetron / is restored when the reception is terminated. If, on the other hand, the subscriber ^ speaks over the long-distance line c, the current to be transmitted is divided equally over the receiver α and the adjustment
Claims (2)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEH123260D DE519738C (en) | 1926-05-27 | 1926-05-27 | Circuit arrangement for controlling the transmission rate for intercom systems or for amplifiers in telephone lines |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEH123260D DE519738C (en) | 1926-05-27 | 1926-05-27 | Circuit arrangement for controlling the transmission rate for intercom systems or for amplifiers in telephone lines |
Publications (1)
Publication Number | Publication Date |
---|---|
DE519738C true DE519738C (en) | 1931-03-04 |
Family
ID=7174313
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEH123260D Expired DE519738C (en) | 1926-05-27 | 1926-05-27 | Circuit arrangement for controlling the transmission rate for intercom systems or for amplifiers in telephone lines |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE519738C (en) |
-
1926
- 1926-05-27 DE DEH123260D patent/DE519738C/en not_active Expired
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