DE718023C - High frequency coil with iron core - Google Patents
High frequency coil with iron coreInfo
- 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
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
Landscapes
- 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)
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)
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 |
-
1937
- 1937-11-17 DE DESCH114267D patent/DE718023C/en not_active Expired
Cited By (3)
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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