GB637099A - Improvements in or relating to high-frequency coil systems - Google Patents
Improvements in or relating to high-frequency coil systemsInfo
- Publication number
- GB637099A GB637099A GB37681/46A GB3768146A GB637099A GB 637099 A GB637099 A GB 637099A GB 37681/46 A GB37681/46 A GB 37681/46A GB 3768146 A GB3768146 A GB 3768146A GB 637099 A GB637099 A GB 637099A
- Authority
- GB
- United Kingdom
- Prior art keywords
- core
- shell
- plunger
- iron
- coil
- 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
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract 7
- 229910052742 iron Inorganic materials 0.000 abstract 3
- 239000000853 adhesive Substances 0.000 abstract 1
- 230000001070 adhesive effect Effects 0.000 abstract 1
- 238000010276 construction Methods 0.000 abstract 1
- 230000008878 coupling Effects 0.000 abstract 1
- 238000010168 coupling process Methods 0.000 abstract 1
- 238000005859 coupling reaction Methods 0.000 abstract 1
- 238000012216 screening Methods 0.000 abstract 1
- 125000006850 spacer group Chemical group 0.000 abstract 1
- 238000004804 winding Methods 0.000 abstract 1
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
- H03H7/01—Frequency selective two-port networks
- H03H7/0153—Electrical filters; Controlling thereof
- H03H7/0161—Bandpass filters
- H03H7/0169—Intermediate frequency filters
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F17/00—Fixed inductances of the signal type
- H01F17/04—Fixed inductances of the signal type with magnetic core
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Coils Or Transformers For Communication (AREA)
- Coils Of Transformers For General Uses (AREA)
Abstract
637,099. Inductances. PHILIPS LAMPS, Ltd. Dec. 23, 1946, No. 37681. Convention date, Oct. 27, 1943. [Class 38 (ii)] A high-frequency coil system, the inductance of which is adapted to be pre-set, comprises a tubular iron shell 5 (Fig. 3) magnetically open at least at one end a coil winding 1 contained within the shell and itself containing a hollow iron core 4 coaxial with the shell and an iron plunger 7 movably arranged within the hollow core so that the plunger partly projects from the core at the open end of the shell, whereby as the plunger is moved further out of the core the inductance of the coil is increased. The core and shell are supported by a flanged non-magnetic insulating body 6. This construction ensures that the iron losses, and consequently the Q of the coil system, are practically constant notwithstanding tuning adjustments. The plunger may be as long as, or short compared with, the length of the core. Fig. 6 shows a transformer comprising two such coil systems in a screening tube 9 and separated by an insulating spacer 8, the length of which almost exclusively controls the coupling between the coils. The various components may be preliminarily attached to one another by wirelike condensers 12, or an adhesive, to allow provisional adjustments on the transformer before fitting it in the tube 9. Specifications 450,286 and 637,098, [Group XL (c)], are referred to.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL637099X | 1943-10-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB637099A true GB637099A (en) | 1950-05-10 |
Family
ID=19788901
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB37681/46A Expired GB637099A (en) | 1943-10-27 | 1946-12-23 | Improvements in or relating to high-frequency coil systems |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB637099A (en) |
-
1946
- 1946-12-23 GB GB37681/46A patent/GB637099A/en not_active Expired
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