DE426027C - Arrangement to avoid dangerous current and voltage increases with intermediate circuit transmitters - Google Patents

Arrangement to avoid dangerous current and voltage increases with intermediate circuit transmitters

Info

Publication number
DE426027C
DE426027C DET28365D DET0028365D DE426027C DE 426027 C DE426027 C DE 426027C DE T28365 D DET28365 D DE T28365D DE T0028365 D DET0028365 D DE T0028365D DE 426027 C DE426027 C DE 426027C
Authority
DE
Germany
Prior art keywords
intermediate circuit
arrangement
voltage increases
current
avoid dangerous
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
DET28365D
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.)
Telefunken AG
Original Assignee
Telefunken 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.)
Publication date
Priority to DET28365D priority Critical patent/DE426027C/en
Application granted granted Critical
Publication of DE426027C publication Critical patent/DE426027C/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/02—Transmitters
    • H04B1/04—Circuits

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Emergency Protection Circuit Devices (AREA)

Description

Anordnung zur Vermeidung von gefährlichen Strom- und Spannungserhöhungen bei Zwischenkreissendern. Bei Zwischenkreissendern wird bekanntlich der Kreis, der zwischen Antenne und dem Erzeuger der Nutzfrequenz liegt, möglichst genau auf die Nutzfrequenz abgestimmt. Wird die Abstimmung der Antenne geändert oder tritt infolge irgendeiner Störung eine Verstimmung ein, so wirkt der Zwischenkreis nahezu wie ein Kurzschluß für die Nutzfrequenz. Der Strom steigt stark an, und es entstehen hohe Spannungen an den Wechselstromwiderständen des Zwischenkreises, die für die Anlage gefährlich sind.Arrangement to avoid dangerous current and voltage increases with intermediate circuit transmitters. In the case of intermediate circuit transmitters, as is well known, the circle that between the antenna and the generator of the useful frequency, as precisely as possible to the Usable frequency matched. If the tuning of the antenna is changed or occurs as a result any disturbance a detuning, the intermediate circuit acts almost like a short circuit for the useful frequency. The current rises sharply, and it arise high voltages at the AC resistors of the intermediate circuit, which are responsible for the Plant are dangerous.

Gemäß der Erfindung wird an den Zwischenkreis ein Hörnerableiter angebracht, der einen Teil des Wechselstromwiderstandes überbrückt. Wählt man den 'Widerstand des Hörnerkreises kleiner als so wird der Zwischenkreis beim Durchschlag schwingungsunfähig. Ist die Antenne sehr stark verstimmt, so wird sich der überschlag am Hörnerableiter stets wiederholen. Es ist daher zweckmäßig, durch den Strom im Ableitekreise ein Relais zu betätigen, wodurch der Sender* außer Betrieb gesetzt wird. Dieses kann z. B. dadurch erfolgen, daß der erste Kreis verstimmt wird oder daß die Erregung des Generators beeinflußt wird oder auch durch irgendein anderes bekanntes Mittel. In der Abbildung ist eine Ausführungsform der Erfindung dargestellt. A stellt eine Hochfrequenzanlage dar, bestehend aus einem Generator mit statischem Frequenzwandler, an den der auf die Nutzfrequenz abgestimmte Zwischenkreis angeschaltet ist. B ist die Antenne. Parallel zum Kondensator des Zwischenkreises ist der Hörnerableiter geschaltet. Im Ableitekreise befindet sich ein Widerstand, von dem ein Stromkreis M abgezweigt ist, durch den beim Durchschlag des Ableitekreises ein Relais betätigt wird. Der Relaisstromkreis N wirkt auf die Erregung des Wechselstromgenerators der HochfrequenzanIage.According to the invention, a horn arrester is attached to the intermediate circuit, which bridges part of the alternating current resistance. If one chooses the 'resistance of the horn circle less than so the intermediate circuit is unable to oscillate in the event of a breakdown. If the antenna is very badly out of tune, the flashover on the horn conductor will repeat itself over and over again. It is therefore advisable to actuate a relay through the current in the discharge circuit, whereby the transmitter * is put out of operation. This can e.g. B. be done in that the first circuit is detuned or that the excitation of the generator is influenced or by some other known means. In the figure, an embodiment of the invention is shown. A represents a high-frequency system, consisting of a generator with a static frequency converter, to which the intermediate circuit, which is tuned to the useful frequency, is connected. B is the antenna. The horn arrester is connected in parallel to the capacitor of the intermediate circuit. In the discharge circuit there is a resistor from which a circuit M is branched off, through which a relay is actuated if the discharge circuit breaks down. The relay circuit N acts on the excitation of the alternator of the high frequency system.

Claims (1)

PATENTANSPRÜCHE: i. Anordnung zur Vermeidung von gefährlichen Strom- und Spannungserhöhungen bei Zwischenkreissendern, dadurch gekennzeichnet, daß die Kapazität oder ein anderer Teil des Wechselstromwiderstandes des Zwischenkreises mittels eines Hörnerableiters überbrückt ist. z. Anordnung nach Anspruch i, dadurch gekennzeichnet, daß der Ableitekreis einen Widerstand enthält, der annähernd gleich ist. 3. Anordnung nach Anspruch i, dadurch gekennzeichnet, daß durch den Strom irr, Ableitekreise ein Relais betätigt wird, welches den Sender außer Betrieb setzt. PATENT CLAIMS: i. Arrangement for avoiding dangerous current and voltage increases in intermediate circuit transmitters, characterized in that the capacitance or another part of the alternating current resistance of the intermediate circuit is bridged by means of a horn arrester. z. Arrangement according to Claim i, characterized in that the discharge circuit contains a resistance which is approximately the same is. 3. Arrangement according to claim i, characterized in that a relay is actuated by the current irr, deflection circuits, which puts the transmitter out of operation.
DET28365D 1923-12-22 Arrangement to avoid dangerous current and voltage increases with intermediate circuit transmitters Expired DE426027C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DET28365D DE426027C (en) 1923-12-22 Arrangement to avoid dangerous current and voltage increases with intermediate circuit transmitters

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DET28365D DE426027C (en) 1923-12-22 Arrangement to avoid dangerous current and voltage increases with intermediate circuit transmitters
DE226556X 1923-12-22

Publications (1)

Publication Number Publication Date
DE426027C true DE426027C (en) 1926-03-10

Family

ID=25764334

Family Applications (1)

Application Number Title Priority Date Filing Date
DET28365D Expired DE426027C (en) 1923-12-22 Arrangement to avoid dangerous current and voltage increases with intermediate circuit transmitters

Country Status (1)

Country Link
DE (1) DE426027C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE936586C (en) * 1950-12-06 1955-12-15 Elektronik G M B H Deutsche FM therapy transmitter

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE936586C (en) * 1950-12-06 1955-12-15 Elektronik G M B H Deutsche FM therapy transmitter

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