DE657831C - Device for balancing iron-free, shielded coils - Google Patents

Device for balancing iron-free, shielded coils

Info

Publication number
DE657831C
DE657831C DET44629D DET0044629D DE657831C DE 657831 C DE657831 C DE 657831C DE T44629 D DET44629 D DE T44629D DE T0044629 D DET0044629 D DE T0044629D DE 657831 C DE657831 C DE 657831C
Authority
DE
Germany
Prior art keywords
free
coil
cover
shielded coils
balancing iron
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
DET44629D
Other languages
German (de)
Inventor
Hans Thiele
Dr Erich Zepler
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.)
Filing date
Publication date
Application filed by Telefunken AG filed Critical Telefunken AG
Priority to DET44629D priority Critical patent/DE657831C/en
Application granted granted Critical
Publication of DE657831C publication Critical patent/DE657831C/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F21/00—Variable inductances or transformers of the signal type
    • H01F21/02—Variable inductances or transformers of the signal type continuously variable, e.g. variometers

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Coils Or Transformers For Communication (AREA)

Description

Einrichtung zum Abgleichen von eisenfreien, abgeschirmten Spulen Beim Bau von Empfängern u. dgl. erweist es sich oft als notwendig, zur Erzielung des Gleichlaufs die Abstimminduktivitäten aufeinander abzugleichen. Da die Induktivitäten zum Zwecke der Abschirmung in Metallkästen untergebracht sind, sind sie häufig nur schwer zugänglich. Die vorliegende Erfindung bezieht sich nun auf eine Einrichtung, mittels derer mit einfachsten Mitteln ohne zusätzlichen Raumbedarf ein solcher Abgl,eich möglich ist.Device for balancing iron-free, shielded coils Construction of receivers and the like, it often turns out to be necessary to achieve the Synchronize the tuning inductances to each other. As the inductors are housed in metal boxes for the purpose of shielding, they are often only hard to access. The present invention relates now to a device by means of which such a comparison can be carried out with the simplest means without additional space requirements is possible.

Die Spule wird in einem zylindrischen Metalltopf untergebracht, welcher einen abnehmbaren Deckel besitzt. Erfindungsgemäß wird die Spule exzentrisch im Topf angeordnet, und der Deckel des Topfes trägt ebenfalls exzentrisch einen als Abgleichelement dienenden Kurzschlußring. Durch Drehen des Deckels kann man die Kopplung zwischen Spule und Kurzschlußring in gewünschter Weise ändern und die Spule abgleichen.The coil is housed in a cylindrical metal pot, which has a removable lid. According to the invention, the coil is eccentric in the Arranged pot, and the lid of the pot also carries an eccentric as Adjustment element serving short-circuit ring. By turning the lid you can see the Change the coupling between the coil and the short-circuit ring in the desired manner and the coil compare.

Ist es erwünscht, nach dem erfolgten Abgleich die Deckel in ihrer Lage dauernd festzuhalten, so kann dies leicht in an sich bekannter Weise durch geeignete Befestigungsmittel, z. B. Lack, .erreicht werden.If you want to have the lids in their To hold the position permanently, this can easily be done in a manner known per se suitable fastening means, e.g. B. varnish. Be achieved.

Es ist bekannt, Luftspulen dadurch abzugleichen, daß ein auf den. Abschirmtopf aufschraubbarer Deckel gedreht wird iund sich dadurch der Spule mehr oder weniger nähert. Ein Gewinde ist aber kostspielig und verlangt eine genügende Wandstärke der Abschirmung. Ohne ein solches Gewinde ist aber ein Abgleichen durch Herauf- -und Herunterverschieben des Deckels schwer durchführbar, da der Deckel leicht festklemmt.It is known to adjust air-core coils in that one on the. The screw-on cover is rotated and the coil becomes more detached or less approaches. However, a thread is expensive and requires a sufficient one Wall thickness of the shield. Without such a thread, however, calibration is complete Moving the cover up and down difficult to carry out because the cover easily clamped.

Ferner ist es bekannt, bei Eisenkernspulen mit konzentrisch in der Abschirmung angeordneter Spule ein Abgleichen durch Drehen des Deckels vorzunehmen, in dem ein Teil des Eisenkernes befestigt ist. Durch eine entsprechende ovalförmige Ausbildung des Kernes wird erreicht, daß beim Drehen des Deckelsein Luftspalt geändert wird. Hiervon unterscheidet sich die Erfindung dadurch, daß sowohl die Spule als auch das Abgleic:helement exzentrisch im Abschirmtopf bzw. am Deckel angeordnet sind, denn beikonzentrisch angeordneter Spule würde ein Verdrehen des Deckels selbst bei exzentrisch befestigtem Abgleichelement keine Selbsti;ndttlctionsänderung hervorrufen.It is also known in iron core coils with concentric in the The shielding of the coil arranged to carry out an adjustment by turning the cover, in which part of the iron core is attached. By a corresponding oval-shaped The formation of the core ensures that the air gap is changed when the cover is turned will. This differs from the invention in that both the coil as also the balance: helement eccentrically arranged in the shielding pot or on the lid because the concentrically arranged coil would twist the cover itself Do not cause a change in self-determination when the adjustment element is attached eccentrically.

Claims (1)

PATENTANSPRUCH: Einrichtung zum Abgleichen von eisenfreien, abgeschirmten Spulen, dadurch gekennzeichnet, däß die Spule exzentrisch in einem Metallzylinder mit abnehmbarem, drehbarem Deckel angeordnet ist, und daß dieser Deckel :ebenfalls exzentrisch ein Abgleichelement (Kurzschlußring) trägt.PATENT CLAIM: Device for balancing iron-free, shielded Coils, characterized in that the coil is eccentric in a metal cylinder is arranged with a removable, rotatable cover, and that this cover: also eccentrically carries an adjustment element (short-circuit ring).
DET44629D 1934-11-14 1934-11-14 Device for balancing iron-free, shielded coils Expired DE657831C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DET44629D DE657831C (en) 1934-11-14 1934-11-14 Device for balancing iron-free, shielded coils

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DET44629D DE657831C (en) 1934-11-14 1934-11-14 Device for balancing iron-free, shielded coils

Publications (1)

Publication Number Publication Date
DE657831C true DE657831C (en) 1938-03-14

Family

ID=7561814

Family Applications (1)

Application Number Title Priority Date Filing Date
DET44629D Expired DE657831C (en) 1934-11-14 1934-11-14 Device for balancing iron-free, shielded coils

Country Status (1)

Country Link
DE (1) DE657831C (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1041114B (en) * 1954-04-01 1958-10-16 Standard Elektrik Lorenz Ag Shielded coils for VHF circuits, especially for frequencies above 100MHz
DE1197517B (en) * 1961-03-14 1965-07-29 Telefunken Patent Matching device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1041114B (en) * 1954-04-01 1958-10-16 Standard Elektrik Lorenz Ag Shielded coils for VHF circuits, especially for frequencies above 100MHz
DE1197517B (en) * 1961-03-14 1965-07-29 Telefunken Patent Matching device

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