DE718023C - High frequency coil with iron core - Google Patents

High frequency coil with iron core

Info

Publication number
DE718023C
DE718023C DESCH114267D DESC114267D DE718023C DE 718023 C DE718023 C DE 718023C DE SCH114267 D DESCH114267 D DE SCH114267D DE SC114267 D DESC114267 D DE SC114267D DE 718023 C DE718023 C DE 718023C
Authority
DE
Germany
Prior art keywords
iron core
high frequency
frequency coil
core
electromagnet
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
DESCH114267D
Other languages
German (de)
Inventor
Georg V Schaub
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
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 Individual filed Critical Individual
Priority to DESCH114267D priority Critical patent/DE718023C/en
Application granted granted Critical
Publication of DE718023C publication Critical patent/DE718023C/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
    • H01F21/08—Variable inductances or transformers of the signal type continuously variable, e.g. variometers by varying the permeability of the core, e.g. by varying magnetic bias

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Electromagnets (AREA)

Description

Hochfrequenzspule mit Eisenkern Die Erfindung bezieht sich auf elektromagnetische Abstimmvorrichtungen, bei welchen eine Hochfrequenzspule mit Eisenkern zwischen den Polschuhen eines Elektromagneten angeordnet ist.Iron core high frequency coil The invention relates to electromagnetic Tuning devices in which a high frequency coil with an iron core between the pole pieces of an electromagnet is arranged.

Es ist bereits vorgeschlagen worden, den Eisenkern einer Hochfrequenzspule zwecks Abstimmung elektromagnetisch zu beeinflussen und zu diesem Zwecke denselben zwischen den Polschuhen eines in seiner Magnetisierung veränderbaren Elektromagneten anzuordnen.It has already been proposed to use the iron core of a high frequency coil to influence electromagnetically for the purpose of tuning and the same for this purpose between the pole pieces of an electromagnet with variable magnetization to arrange.

Zur Verbesserung des Wirkungsgrades einer solchen Vorrichtung wird erfindungsgemäß der Kraftlinienfluß des Elektromagneten so gerichtet, daß bei geringen Streuverlusten der magnetisch wirksamste Teil des Spulenkerns getroffen wird. Abb. i zeigt ein Ausführungsbeispiel, bei welchem eine Hochfrequenzspule b mit einem offenen Zylinderkern d. verwendet wird. Die Polschuhe c des Elektromagneten (mit der Erregerwicklung a) sind erfindungsgemäß zur Verringerung des Polabstandes in den Eisenkern eingeführt, wobei dieselben auch mit Gewinde versehen sein können. Das magnetische Kraftlinienfeld verläuft demnach vorzugsweise im- mittleren wirksamsten Teil des Kernes, wobei infolge des verminderten Polabstandes ein entsprechend kräftigeres Feld entstehen wird.In order to improve the efficiency of such a device, according to the invention, the flux of the lines of force of the electromagnet is directed in such a way that the most magnetically effective part of the coil core is hit with low leakage losses. Fig. I shows an embodiment in which a high frequency coil b with an open cylinder core d. is used. According to the invention, the pole shoes c of the electromagnet (with the excitation winding a) are inserted into the iron core to reduce the pole spacing, and they can also be provided with a thread. The magnetic force line field accordingly preferably runs in the middle most effective part of the core, with a correspondingly stronger field being created as a result of the reduced pole spacing.

Abb. z zeigt ein weiteres Ausführungsbeispiel, bei welchem der Elektromagnet als geschlossener Eisentopf f ausgeführt ist. Die Magnetwicklung lz ist auf dem inneren Magnetkern g untergebracht. Die Hochfrequenzspule i mit geschlossenem Mantelkern in ist zwischen dem Magnetkern g und dem Magnetdeckel k angeordnet. Die Einrichtung ist so getroffen, daß die Polschuhe des Magnetkerns und des Deckels in den Spulenkern in eingreifen.Fig. Z shows another embodiment in which the electromagnet is designed as a closed iron pot f. The magnet winding lz is accommodated on the inner magnet core g. The high-frequency coil i with a closed jacket core in is arranged between the magnetic core g and the magnetic cover k. The device is made so that the pole pieces of the magnetic core and the cover engage in the coil core.

Abstimmanordnungen, wie beschrieben und dargestellt, eignen sich infolge ihres erhöhten Wirkungsgrades auch für solche Zwecke, bei welchen nur ein beschränkter Magnetstrom zur Verfügung steht, wie z. B. der Anodenstrom geregelter Röhrenstufen bei Bandbreitenregelung und Scharfabstimmung. Die Abstimmanordnungen können ferner auch vorteilhaft für Fernabstimmeinrichtungen verwendet werden.As a result, voting arrangements as described and illustrated are suitable their increased efficiency also for those purposes for which only a limited Solenoid current is available, such as B. the anode current of regulated tube stages with bandwidth control and sharpening. The voting orders can also can also be used advantageously for remote tuning devices.

Claims (1)

PATENTANSPRÜCHE: i. Hochfrequenzspule mit Eisenkern, der zwischen den Polschuhen eines zur Regelung der Induktivität der Hochfrequenzspule in seiner Magnetisierung veränderbaren Elektromagneten angeordnet ist, dadurch gekennzeichnet, daß der Hochfrequenzeisenkern in seinem wirksamsten Teil Durchbohrungen oder Aussparungen hat, in welche die Polschuhe des Elektromagneten derart eingreifen, daß der Polabstand verringert wird. a. Hochfrequenzspule mit Eisenkern nach dem Anspruch i, dadurch gekennzeichnet, daß der Kern des Elektromagneten als Topfkern ausgebildet ist und den Hochfrequenzeisenkern umschließt.PATENT CLAIMS: i. High frequency coil with an iron core between the pole pieces one for regulating the inductance of the high frequency coil in his Magnetization changeable electromagnet is arranged, characterized in that that the high-frequency iron core in its most effective part through holes or recesses has, in which the pole pieces of the electromagnet engage in such a way that the pole spacing is decreased. a. High-frequency coil with an iron core according to claim i, characterized in that characterized in that the core of the electromagnet is designed as a pot core and encloses the high frequency iron core.
DESCH114267D 1937-11-17 1937-11-17 High frequency coil with iron core Expired DE718023C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DESCH114267D DE718023C (en) 1937-11-17 1937-11-17 High frequency coil with iron core

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DESCH114267D DE718023C (en) 1937-11-17 1937-11-17 High frequency coil with iron core

Publications (1)

Publication Number Publication Date
DE718023C true DE718023C (en) 1942-02-28

Family

ID=7450065

Family Applications (1)

Application Number Title Priority Date Filing Date
DESCH114267D Expired DE718023C (en) 1937-11-17 1937-11-17 High frequency coil with iron core

Country Status (1)

Country Link
DE (1) DE718023C (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE942333C (en) * 1951-05-22 1956-05-03 Philips Nv Changeable inductance with pre-magnetized core
DE1014244B (en) * 1953-03-21 1957-08-22 Philips Nv Ferromagnetic coil core premagnetized by permanent magnets
DE3502549A1 (en) * 1984-01-30 1985-08-08 Toko K.K., Tokio/Tokyo ELECTRIC CONTROLLED, CHANGEABLE INDUCTOR

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE942333C (en) * 1951-05-22 1956-05-03 Philips Nv Changeable inductance with pre-magnetized core
DE1014244B (en) * 1953-03-21 1957-08-22 Philips Nv Ferromagnetic coil core premagnetized by permanent magnets
DE3502549A1 (en) * 1984-01-30 1985-08-08 Toko K.K., Tokio/Tokyo ELECTRIC CONTROLLED, CHANGEABLE INDUCTOR

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