DE827812C - Induction tuning device - Google Patents

Induction tuning device

Info

Publication number
DE827812C
DE827812C DESCH3441A DESC003441A DE827812C DE 827812 C DE827812 C DE 827812C DE SCH3441 A DESCH3441 A DE SCH3441A DE SC003441 A DESC003441 A DE SC003441A DE 827812 C DE827812 C DE 827812C
Authority
DE
Germany
Prior art keywords
coils
tuning
tuning device
lever arm
iron cores
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
DESCH3441A
Other languages
German (de)
Inventor
Dipl-Ing Heinz Donn
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.)
G Schaub Apparatebau GmbH
Original Assignee
G Schaub Apparatebau 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 G Schaub Apparatebau GmbH filed Critical G Schaub Apparatebau GmbH
Priority to DESCH3441A priority Critical patent/DE827812C/en
Application granted granted Critical
Publication of DE827812C publication Critical patent/DE827812C/en
Expired legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F21/00Variable inductances or transformers of the signal type
    • H01F21/02Variable inductances or transformers of the signal type continuously variable, e.g. variometers
    • H01F21/06Variable inductances or transformers of the signal type continuously variable, e.g. variometers by movement of core or part of core relative to the windings as a whole
    • H01F21/065Measures for obtaining a desired relation between the position of the core and the inductance

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Channel Selection Circuits, Automatic Tuning Circuits (AREA)

Description

Die Erfindung bezieht sich auf eine Induktions-Abstimmvorrichtung für Überlagerungsempfänger.The invention relates to an induction tuning device for heterodyne receivers.

Es ist bekannt, Geräte der drahtlosen Nachrichtentechnik, insbesondere Rundfunkempfänger, dadurch abzustimmen, daß in die Selbstinduktionsspulen der Schwingkreise Eisenkerne eingeführt "werden. Da die Abstimmungskennlinien der einzelneu Schwingungskreise von Überlagerungseinpfängern, insbesondere die der Eingangs- und der Oszillatorschwingkreise, verschiedene Abstimmungskennlinien aufweisen, war es bisher nötig, bei derartigen Abstimmvorrichtungen für die verschiedenen Kreise verschiedenartige Spulen bzw. Kerngrößen zu verwenden, um mit nur einem Bedienungsknopf alle Kreise gleichzeitig abstimmen zu können.It is known devices of wireless communication technology, in particular Radio receiver to be tuned in that in the self-induction coils of the oscillating circuits Iron cores are introduced ". Since the tuning characteristics of the individual oscillation circles of superposition receivers, especially those of the input and oscillator circuits, have different tuning characteristics, it was previously necessary for such Tuning devices for the different circles different types of coils or Use core sizes to set all circles at the same time with just one control button to be able to vote.

Die Erfindung ermöglicht nun dadurch die Verwendung gleichartiger Spulen und Eisenkerne für alle Abstimmkreise eines Überlagerungsempfängers, daß die Eisenkerne, die in die Spulen der einzelnen Kreise eintauchen, an einem Hebelarm befestigt sind, wobei die Entfernung der Befestigungsstellen am Hebelarm von der Schwenkachse des Hebelarms so gewählt wird, daß die Abstimmungskennlinie jedes einzelnen Kreises bei Schwenkung des Hebelarms die vorgeschriebene Gestalt bekommt.The invention now enables the use of the same Coils and iron cores for all tuning circuits of a heterodyne receiver that the iron cores, which are immersed in the coils of the individual circles, on a lever arm are attached, the removal of the attachment points on the lever arm of the Pivot axis of the lever arm is chosen so that the tuning characteristic of each individual Circle gets the prescribed shape when pivoting the lever arm.

Bei Anwendung der Erfindung benötigt man also nicht mehr wie bisher für jeden Schwingungskreis eine besonders angefertigte Spule oder einen Eisenkern besonderer Gestalt. Man kann vielmehr für alle Schwingungskreise die gleiche Spulen- und Kerngröße wählen, was die Herstellung, insbesondere die Massenfertigung von Rundfunkempfängern, verbilligt und vereinfacht.When using the invention, you no longer need as before a specially designed coil or iron core for each oscillation circuit special shape. Rather, one can use the same coil- and choose core size what the manufacture, especially mass production of Radio receivers, cheaper and simplified.

Die Zeichnung zeigt beispielsweise schematisch zwei Ausführungsformen der Erfindung.The drawing shows, for example, schematically two embodiments the invention.

In dieser Zeichnung ist 2 ein Hebelarm, der um die Schwenkachse 3 drehbar ist. An diesem Arm greift einerseits die Feder 4. und andererseits die zum Abstimmknopf führende Schnur 15 an. An dem Hebelarm sind in verschiedener Entfernung von der Achse 3 die Eisenkerne i und 6 befestigt, die in die Spulen 7 und 8 eintauchen. Die Entfernung der Befestigungspunkte 9 und io von der Schwenkachse 3 ist dabei so gewählt. daß die Abstimmungskennlinie sowohl für 5, 7 als auch für 6, 8 die für das betreffende Gerät notwendige Gestalt und Größe haben.In this drawing, 2 is a lever arm that rotates around the pivot axis 3 is rotatable. On this arm engages on the one hand the spring 4. and on the other hand the for Cord 15 leading to the tuning button. On the lever arm are at different distances The iron cores i and 6 are attached to the axis 3 and are immersed in the coils 7 and 8. The distance between the attachment points 9 and io from the pivot axis 3 is included so chosen. that the tuning curve for both 5, 7 and 6, 8 for the device in question have the necessary shape and size.

In Fig. i liegen die beiden dargestellten Spulen parallel zueinander, in F ig. 2 dagegen zwecks Entkopplung in einem N\'inkel zueinander. Die Befestigungsschnüre i i der Eisenkerne 5, 6 an dem Hebel sind in diesem Falle über Umlenkrollen 12, 13 geführt und die Federn 4 sind an den Eisenkernen befestigt.In Fig. I the two coils shown are parallel to each other, in Fig. 2, on the other hand, for the purpose of decoupling at a n \ 'angle to each other. The fastening cords i i the iron cores 5, 6 on the lever are in this case via pulleys 12, 13 out and the springs 4 are attached to the iron cores.

Claims (3)

PATEN TANSPHi;cHF: t. Induktive :Abstimmungsvorrichtung für Überlagerungsempfänger, gekennzeichnet durch eine die notwendigen Unterschiede in den Abstimmungskennlinien der Oszillator- und Eingarigskreisspulen liervoi-rtifende Entfernung der Befestigungsstellen der diese Spulen durchlaufenden Eisenkerne an einem Hebelarm von dessen Schwenkachse. PATEN TANSPHi; cHF: t. Inductive: tuning device for heterodyne receivers, characterized by the necessary differences in the tuning characteristics of the oscillator and single-circuit circuit coils liervoi-rtifende removal of the fastening points the iron cores passing through these coils on a lever arm of its pivot axis. 2. Vorrichtung nach Anspruch i, dadurch gekennzeichnet, daß die Spulen parallel zueinander angeordnet sind und der Hebelaren in der Spulenachsenebene schwenkbar ist. 2. Apparatus according to claim i, characterized in that the coils are parallel are arranged to each other and the lever arms are pivotable in the plane of the coil axis is. 3. Vorrichtung nach Anspruch t, dadurch gekennzeichnet, daß die Spulen zur Entkopplung unter einem Winkel, beispielsweise 9o°, angeordnet sind und die Kerne über Umlenkglieder, beispielsweise Rollen, betätigt werden.3. Apparatus according to claim t, characterized in that the coils for Decoupling at an angle, for example 9o °, are arranged and the cores be actuated via deflection members, for example rollers.
DESCH3441A 1950-07-25 1950-07-25 Induction tuning device Expired DE827812C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DESCH3441A DE827812C (en) 1950-07-25 1950-07-25 Induction tuning device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DESCH3441A DE827812C (en) 1950-07-25 1950-07-25 Induction tuning device

Publications (1)

Publication Number Publication Date
DE827812C true DE827812C (en) 1952-01-14

Family

ID=7423761

Family Applications (1)

Application Number Title Priority Date Filing Date
DESCH3441A Expired DE827812C (en) 1950-07-25 1950-07-25 Induction tuning device

Country Status (1)

Country Link
DE (1) DE827812C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1029892B (en) * 1953-12-11 1958-05-14 Telefunken Gmbh Device for simultaneous switching of a number of oscillating circuits

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1029892B (en) * 1953-12-11 1958-05-14 Telefunken Gmbh Device for simultaneous switching of a number of oscillating circuits

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