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DE723792C - Circuit for frequency-stable vibration generation - Google Patents

Circuit for frequency-stable vibration generation

Info

Publication number
DE723792C
DE723792C DEC52091D DEC0052091D DE723792C DE 723792 C DE723792 C DE 723792C DE C52091 D DEC52091 D DE C52091D DE C0052091 D DEC0052091 D DE C0052091D DE 723792 C DE723792 C DE 723792C
Authority
DE
Germany
Prior art keywords
circuit
frequency
oscillation
grid
vibration generation
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
DEC52091D
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.)
Thales SA
Original Assignee
CSF Compagnie Generale de Telegraphie sans Fil SA
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 CSF Compagnie Generale de Telegraphie sans Fil SA filed Critical CSF Compagnie Generale de Telegraphie sans Fil SA
Application granted granted Critical
Publication of DE723792C publication Critical patent/DE723792C/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
    • H03B5/00—Generation of oscillations using amplifier with regenerative feedback from output to input
    • H03B5/08—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance
    • H03B5/10—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being vacuum tube

Landscapes

  • Coils Or Transformers For Communication (AREA)
  • Inductance-Capacitance Distribution Constants And Capacitance-Resistance Oscillators (AREA)
  • Oscillators With Electromechanical Resonators (AREA)
  • Particle Accelerators (AREA)

Description

Die Erfindung betrifft eine Schaltung zur Erzeugung von frequenzstabilen Schwingungen. The invention relates to a circuit for generating frequency-stable oscillations.

An Hand der Abbildung soll die Erfindung näher beschrieben werden.The invention is to be described in more detail using the illustration.

Im Gitter- und im Anodenkreis einer Röhre liegen Impedanzen C1 und C2 in Reihe mit den Induktivitäten L1 und L2. Die beiden Induktivitäten sind mit einem Parallelschwingungskreis LC gekoppelt, der auf die zu erzeugende Frequenz abgestimmt ist. Eine ähnliche Schaltung wurde schon von Fromy (L'Onde Electrique, 1925) vorgeschlagen, jedoch unter Vernachlässigung der unvermeidliehen Ohmschen Widerstände r, Y1 und r2, die als Reihenglieder in den Kreisen liegen. Fromy kommt zu dem Schluß, daß L1, C1 und L2, C2 auf die Betriebsfrequenz abzustimmen seien und daß unter dieser Bedingung a° eine Schwingung erzeugt werde, deren Kreisfrequenz genau gleich der reziproken Wurzel aus LC ist.In the grid and anode circuit of a tube, impedances C 1 and C 2 are in series with the inductances L 1 and L 2 . The two inductors are coupled to a parallel oscillating circuit LC , which is tuned to the frequency to be generated. A similar circuit was already proposed by Fromy (L'Onde Electrique, 1925), but neglecting the unavoidable ohmic resistances r, Y 1 and r 2 , which are in series in the circles. Fromy comes to the conclusion that L 1 , C 1 and L 2 , C 2 are to be matched to the operating frequency and that under this condition a ° an oscillation is generated whose angular frequency is exactly equal to the reciprocal square root of LC .

Die Erfindung beruht auf der Erkenntnis, daß die Widerstände r, Y1 und r2 nicht zu vernachlässigen sind und daß auch die Kopplung zwischen dem Parallelschwingungskreis und den Gitter- und Anodenkreisen eine wesentliche Rolle bei der Schwingungserzeugung spielt. Die Fromysche Lösung gilt nur für T1 = Y2 = ν = o, was in der Praxis niemals zu verwirklichen ist.The invention is based on the knowledge that the resistances r, Y 1 and r 2 cannot be neglected and that the coupling between the parallel oscillation circuit and the grid and anode circles also plays an essential role in generating the oscillation. Fromy's solution is only valid for T 1 = Y 2 = ν = o, which can never be realized in practice.

Unter Berücksichtigung dieser Widerstände ergeben sich vielmehr die folgenden Bedingungen, unter denen eine Schwingung erzeugt wird, deren Kreisfrequenz genau gleich der reziproken Wurzel aus LC ist:Taking these resistances into account, the following conditions arise under which an oscillation is generated whose angular frequency is exactly the same as the reciprocal square root of LC :

LCLC

L1C1 L 1 C 1

LCLC

■ I =■ I =

rCrC

rCrC

Weiterhin müssen die absoluten Werte der Kopplungskoeffizienten M1 und M2 der gegenseitigen Induktion des Parallelschwingungskreises und des Gitter- bzw. Anodenkreises gleich sein. Schließlich müssen die Impedanzen C1 und C2 auf einen solchen Wert eingestellt werden, daß die obengenannten Beziehungen erfüllt werden. Unter all diesen Bedingungen ergibt sich eine frequenzstabile Schwingung, unabhängig von der absoluten Größe von r, Y1 und r2.Furthermore, the absolute values of the coupling coefficients M 1 and M 2 of the mutual induction of the parallel oscillation circuit and the grid or anode circuit must be the same. Finally, the impedances C 1 and C 2 must be set to such a value that the above-mentioned relationships are satisfied. Under all these conditions there is a frequency-stable oscillation, regardless of the absolute size of r, Y 1 and r 2 .

In den oben angegebenen Gleichungen kommt der Widerstand Y1 nicht vor. Die Schwingungserzeugung ist also von diesem Widerstand und damit auch von dessen Verhältnis zu den anderen Widerständen unab Resistance Y 1 does not appear in the equations given above. The generation of vibrations is therefore independent of this resistance and thus also of its relationship to the other resistances

hängig.pending.

Claims (1)

Patentanspruch:Claim: Schaltung zur frequenzstabilen Schwingungserzeugung unter Verwendung eines zwischen Gitter- und Anodenkreis einer Röhre induktiv gekoppelten, auf die zu erzeugende Frequenz abgestimmten Parallelschwingungskreises, dadurch gekennzeichnet, daß im Anoden- und Gitterkreis je eine aus einer Reihenschaltung von Induktivität, Kapazität und Widerstand (L1, C1, T1 bzw. L2, C2, Y2) bestehende Impedanz liegt, deren Induktivitäten L1, L2 so angenommen sind, daß für die Kopplung mit dem Parallelschwingkreis die Beträge der Kopplungskoeffizienten (M1, M2) gleich groß sind und daß die Kapazitäten (C1, C2) so gewählt sind, daß sie zusammen mit den entsprechenden Größen (L, C, r) des Parallelschwingungskreises den BeziehungenCircuit for frequency-stable oscillation generation using a parallel oscillation circuit which is inductively coupled between the grid and anode circuit of a tube and tuned to the frequency to be generated, characterized in that in the anode and grid circuit one each from a series connection of inductance, capacitance and resistance (L 1 , C 1 , T 1 or L 2 , C 2 , Y 2 ) existing impedance, whose inductances L 1 , L 2 are assumed so that the magnitudes of the coupling coefficients (M 1 , M 2 ) are the same for coupling with the parallel resonant circuit are and that the capacities (C 1 , C 2 ) are chosen so that they, together with the corresponding quantities (L, C, r) of the parallel oscillation circuit, the relationships
DEC52091D 1934-11-24 1935-11-26 Circuit for frequency-stable vibration generation Expired DE723792C (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR675890X 1934-11-24

Publications (1)

Publication Number Publication Date
DE723792C true DE723792C (en) 1942-08-13

Family

ID=9019578

Family Applications (2)

Application Number Title Priority Date Filing Date
DEC51090D Expired DE675890C (en) 1934-11-24 1935-11-26 Circuit for frequency stabilization
DEC52091D Expired DE723792C (en) 1934-11-24 1935-11-26 Circuit for frequency-stable vibration generation

Family Applications Before (1)

Application Number Title Priority Date Filing Date
DEC51090D Expired DE675890C (en) 1934-11-24 1935-11-26 Circuit for frequency stabilization

Country Status (4)

Country Link
US (1) US2115877A (en)
DE (2) DE675890C (en)
FR (1) FR794802A (en)
GB (1) GB454059A (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2622200A (en) * 1945-09-04 1952-12-16 Herman S Pierce Therapeutic device
US2520823A (en) * 1946-04-10 1950-08-29 Premier Crystal Lab Inc Oscillator frequency control
US2493044A (en) * 1946-06-22 1950-01-03 Farnsworth Res Corp Deflection wave generator
US2547217A (en) * 1947-10-08 1951-04-03 Hartford Nat Bank & Trust Co Circuit arrangement for counting pulses
DE1118278B (en) * 1959-04-04 1961-11-30 Suedwestfunk Control method for generating a constant amplitude of the mixed product of a ring modulator

Also Published As

Publication number Publication date
DE675890C (en) 1939-05-23
GB454059A (en) 1936-09-23
US2115877A (en) 1938-05-03
FR794802A (en) 1936-02-26

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