DE477309C - Transmitter circuit, especially for short waves - Google Patents

Transmitter circuit, especially for short waves

Info

Publication number
DE477309C
DE477309C DEE37191D DEE0037191D DE477309C DE 477309 C DE477309 C DE 477309C DE E37191 D DEE37191 D DE E37191D DE E0037191 D DEE0037191 D DE E0037191D DE 477309 C DE477309 C DE 477309C
Authority
DE
Germany
Prior art keywords
transmitter
transmitter circuit
short waves
switched
circuit
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
DEE37191D
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.)
Individual
Original Assignee
Individual
Publication date
Priority to DEE37191D priority Critical patent/DE477309C/en
Application granted granted Critical
Publication of DE477309C publication Critical patent/DE477309C/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
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
    • H03F1/08—Modifications of amplifiers to reduce detrimental influences of internal impedances of amplifying elements

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Power Engineering (AREA)
  • Transmitters (AREA)

Description

Senderschaltung, insbesondere für kurze Wellen Bei Sendern, die mit kürzeren Wellen, insbesondere mit kurzen Wellen, arbeiten, haben sich Mißstände dadurch ergeben, daß die Heizstromzuführungen zu stehenden Schwingungen angeregt werden. Bei ungünstiger Dimensionierung des Senders kann es so weit kommen, daß die Schwingungen des Senders vollständig aussetzen. Eine genauere Untersuchung der vorliegenden Verhältnisse hat ergeben, daß bei den hohen Frequenzen die Kapazität Gitter-Kathode so beträchtlich ist, daß die Heizstromzuführungen zu Schwingungen angeregt werden, da die Kopplung des Schwingungskreises über die Kapazität mit den Heizstromzuführungen äußerst eng ist. Durch die enge Kopplung wird im. Resonanzfalle dem Sender viel Energie entzogen und somit die Schwingfähigkeit herabgesetzt. An Versuchssendern hat sich einwandfrei das Auftreten solcher Schwingungen nachweisen lassen.Transmitter circuit, especially for short waves. For transmitters that use Working with shorter waves, especially with short waves, have grievances result from the fact that the heating current leads excited to standing vibrations will. If the transmitter is dimensioned poorly, it can go so far that completely expose the transmitter to vibrations. A closer examination of the The present conditions have shown that at the high frequencies the capacitance The grid cathode is so considerable that the heating current leads cause vibrations are excited because the coupling of the oscillating circuit via the capacitance with the Heating current leads is extremely tight. Due to the close coupling, the. Resonance trap A lot of energy is withdrawn from the transmitter and thus the ability to vibrate is reduced. At Test transmitters have proven the occurrence of such vibrations without any problems permit.

Erfindungsgemäß werden diese Nachteile dadurch vermieden, daß in die Heizstromleitungen Abstimmelemente eingeschaltet werden, die eine Verstimmung derselben gegenüber der Senderwelle ermöglichen. Beim Einschalten von Drosselspulen kann man durch Veränderung der Windungszahl den Resonanzfall der Heizstromleitung vermeiden und dadurch die für das beste Arbeiten des Senders günstige Länge der Heizleitung finden.According to the invention these disadvantages are avoided in that in the Heating current lines tuning elements are switched on, detuning the same allow against the transmitter wave. When switching on reactors one can Avoid resonance of the heating current line by changing the number of turns and thus the length of the heating cable that is favorable for the best working of the transmitter Find.

Gemäß der weiteren Erfindung kann auch eine Kombination von Drosseln und Kapazitäten in die Heizstromzuführungen eingeschaltet werden.According to the further invention, a combination of throttles can also be used and capacities are switched on in the heating current feeds.

An Hand der Abbildungen, die eine beispielsweise Anordnung eines Kurzwellensenclers darstellen, sei der Erfindungsgedanke näher erläutert. Der äußere Schwingungs-I@ieis wird durch die innere Röhrenkapazität C1, die Kapazität C und die Verbindungsleitung L gebildet.o Die Gitterströme werden durch den Widerstand R abgeleitet, während die Anodenspannung über den Transformator TA zugeführt wird. Die Ka thode wird über einen Transformator TH und die anzapfbaren Drosselspulen Dy, und Dy2 gespeist. Durch die wahlweise Anzapfung der Drosselspulen kann der Heizstromkreis so abgestimmt werden, daß er sich nicht im Resonanzfalle befindet, und demgemäß größtmöglichste Senderleistung erreicht werden kann. Ob die eingeschalteten Windungszahlen der beiden Drosseln dieselben sein müssen oder verschieden, hängt von der verwendeten Röhrentype und dem Spannungsabfall in der Kathode ab.On the basis of the figures, an example of an arrangement of a short wave transmitter represent, the idea of the invention is explained in more detail. The outer vibrational I @ iis is through the inner tube capacitance C1, the capacitance C and the connecting line L. o The grid currents are diverted through the resistor R, while the anode voltage is supplied via the transformer TA. The cathode is over a transformer TH and the tapping inductors Dy, and Dy2 are fed. By the heating circuit can be matched to the optional tapping of the choke coils that it is not in the resonance trap, and accordingly the greatest possible Transmitter power can be achieved. Whether the turned-on number of turns of the two Chokes must be the same or different, depends on the type of tube used and the voltage drop in the cathode.

Bei dem in der Abb. 2 dargestellten Sender wird die Verstimmung mit Hilfe von anzapfbaren Drosselspulen und einer Kapazität CH, die zwischen Anzapfungen der beiden Drosselspulen eingeschaltet ist, vorgenommen.In the transmitter shown in Fig. 2, the detuning is also Help of tapping reactors and a capacitance CH between taps of the two inductors is switched on.

Claims (3)

PATENTANSPRÜCHE: i. Senderschaltung, insbesondere für kurze Wellen, dadurch gekennzeichnet, daß der Heizkreis zur Vermeidung stehender Schwingungen durch veränderliche Abstimmittel gegenüber der Senderwelle verstimmt ist. PATENT CLAIMS: i. Transmitter circuit, especially for short waves, characterized in that the heating circuit to avoid standing vibrations is detuned from the transmitter wave by variable tuning means. 2. Senderschaltung nach Anspruch i, dadurch gekennzeichnet, daß in den Heizkreis variable Drosselspulen eingeschaltet sind. 2. Transmitter circuit according to claim i, characterized in that variable choke coils in the heating circuit are switched on. 3. Senderschaltung nach Anspruch i und 2, dadurch gekennzeichnet,- daß der Heizkreis durch eingeschaltete Kapazitäten verstimmt ist.3. Transmitter circuit according to claim i and 2, characterized in that - that the heating circuit is out of tune due to capacitances being switched on.
DEE37191D Transmitter circuit, especially for short waves Expired DE477309C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEE37191D DE477309C (en) Transmitter circuit, especially for short waves

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEE37191D DE477309C (en) Transmitter circuit, especially for short waves

Publications (1)

Publication Number Publication Date
DE477309C true DE477309C (en) 1929-06-05

Family

ID=7078033

Family Applications (1)

Application Number Title Priority Date Filing Date
DEE37191D Expired DE477309C (en) Transmitter circuit, especially for short waves

Country Status (1)

Country Link
DE (1) DE477309C (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE741536C (en) * 1938-02-05 1943-11-12 Fernseh Gmbh Arrangement for generating the anode voltage for cathode ray tubes
DE1153449B (en) * 1955-06-03 1963-08-29 Philips Nv High frequency generator for industrial purposes

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE741536C (en) * 1938-02-05 1943-11-12 Fernseh Gmbh Arrangement for generating the anode voltage for cathode ray tubes
DE1153449B (en) * 1955-06-03 1963-08-29 Philips Nv High frequency generator for industrial purposes

Similar Documents

Publication Publication Date Title
DE477309C (en) Transmitter circuit, especially for short waves
DE1106818B (en) Broadband mixer stage
DE689863C (en) High frequency coupling device
DE739095C (en) Mixing tube circuit for overlay receiver
DE293300C (en)
DE940236C (en) Tube circuit with feedback coil between anode and cathode, in particular mixing stage
DE546839C (en) Detector for maximum frequencies
AT213964B (en) Antenna input circuit for decimeter waves
DE975513C (en) Input circuit of an ultra-short wave receiver
DE698738C (en) Coupling arrangement for high frequency transmitters, especially for short waves
DE462849C (en) Device for controlling externally excited tube transmitters
DE547362C (en) Method for frequency multiplication by means of rectifiers, especially those with glow cathode and mercury vapor
DE381923C (en) Receiver circuit for wave telegraphy and telephony
AT109952B (en) Circuit arrangements for the superimposition of electrical vibrations.
DE900954C (en) Overlay receiver in which an intermediate frequency amplifier tube in reflex circuit is used for high frequency amplification, especially when receiving short waves
DE428806C (en) Circuit arrangement for generating vibrations by means of cathode tubes
DE560965C (en) Two-wire transmission line between a high-frequency source and an antenna
DE869218C (en) Arrangement for coupling two high-frequency stages for short waves
DE606151C (en) Circuit for eliminating interference waves
DE513184C (en) Tube transmitter, especially for portable shortwave stations
AT157792B (en) Circuit for coupling two electrical circuits.
DE727992C (en) Mixing circuit for ultra-short wave superposition receivers
DE603006C (en) Oscillator excited by a piezoelectric crystal resonator
AT147615B (en) High frequency coupling system.
DE448060C (en) Arrangement for transmitting the energy of an electromagnetic wave from an excitation circuit to a consumer circuit