AT151121B - Coupling circuit. - Google Patents

Coupling circuit.

Info

Publication number
AT151121B
AT151121B AT151121DA AT151121B AT 151121 B AT151121 B AT 151121B AT 151121D A AT151121D A AT 151121DA AT 151121 B AT151121 B AT 151121B
Authority
AT
Austria
Prior art keywords
inductance
frequency
capacitor
points
circuit according
Prior art date
Application number
Other languages
German (de)
Original Assignee
Telefunken Gmbh
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.)
Filing date
Publication date
Application filed by Telefunken Gmbh filed Critical Telefunken Gmbh
Application granted granted Critical
Publication of AT151121B publication Critical patent/AT151121B/en

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Landscapes

  • Inductance-Capacitance Distribution Constants And Capacitance-Resistance Oscillators (AREA)

Description

  

   <Desc/Clms Page number 1> 
 



  Ankopplungssehaltung. 
 EMI1.1 




   <Desc / Clms Page number 1>
 



  Coupling circuit.
 EMI1.1

Claims (1)

PATENT-ANSPRÜCHE : 1. Ankopplungsschaltung, bei der zwischen zwei Punkten eine Reihenschaltung von im wesentlichen einer Induktivität, einem festen Kondensator und einer Parallelschaltung einer weiteren Induktivität mit einem veränderlichen Kondensator liegt, dadurch gekennzeichnet, dass die Grösse der einzelnen Elemente insbesondere zur Unterdrückung der Spiegelfrequenz in Superhetempfängern so gewählt wird, dass zwischen den beiden Punkten gleichzeitig eine Stromresonanz und eine über einen gewünschten Frequenzbereich hinweg um einen angenähert konstanten Betrag frequenzmässig darüber liegende Spannungsresonanz erzeugt wird. PATENT CLAIMS: 1. Coupling circuit, in which between two points there is a series connection of essentially an inductance, a fixed capacitor and a parallel connection of a further inductance with a variable capacitor, characterized in that the size of the individual elements is selected in particular to suppress the image frequency in superhet receivers is that between the two points a current resonance and a voltage resonance over a desired frequency range by an approximately constant amount is generated simultaneously in terms of frequency. 2. Schaltung nach Anspruch 1, dadurch gekennzeichnet, dass die in Reihe geschaltete Induktivität gleichzeitig als Rückkopplungsspule zur Erzeugung einer Überlagerungsschwingung dient. 2. Circuit according to claim 1, characterized in that the series-connected inductance simultaneously serves as a feedback coil for generating a superimposed oscillation. 3. Schaltung nach Anspruch 1, dadurch gekennzeichnet, dass der feste Kondensator gleichzeitig als Hochfrequenz-Überbrückungskondensator für einen Widerstand dient, in dem ein Strom den als Gittervorspannung verwendeten Spannungsabfall erzeugt. EMI2.1 3. A circuit according to claim 1, characterized in that the fixed capacitor simultaneously serves as a high-frequency bypass capacitor for a resistor in which a current generates the voltage drop used as the grid bias. EMI2.1
AT151121D 1934-03-12 1935-03-04 Coupling circuit. AT151121B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE151121X 1934-03-12

Publications (1)

Publication Number Publication Date
AT151121B true AT151121B (en) 1937-10-25

Family

ID=5674295

Family Applications (1)

Application Number Title Priority Date Filing Date
AT151121D AT151121B (en) 1934-03-12 1935-03-04 Coupling circuit.

Country Status (1)

Country Link
AT (1) AT151121B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1183141B (en) * 1958-10-10 1964-12-10 Telefunken Patent Self-oscillating mixer with triode in a grid-based circuit for high frequencies, especially for television bands in the decimeter wave range

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1183141B (en) * 1958-10-10 1964-12-10 Telefunken Patent Self-oscillating mixer with triode in a grid-based circuit for high frequencies, especially for television bands in the decimeter wave range

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