GB609708A - Improvements in and relating to ultra high frequency inductors - Google Patents
Improvements in and relating to ultra high frequency inductorsInfo
- Publication number
- GB609708A GB609708A GB10174/44A GB1017444A GB609708A GB 609708 A GB609708 A GB 609708A GB 10174/44 A GB10174/44 A GB 10174/44A GB 1017444 A GB1017444 A GB 1017444A GB 609708 A GB609708 A GB 609708A
- Authority
- GB
- United Kingdom
- Prior art keywords
- sections
- coil
- inductance
- divided
- turns
- 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
- H01F21/06—Variable 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
- H01F21/065—Measures for obtaining a desired relation between the position of the core and the inductance
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Coils Or Transformers For Communication (AREA)
Abstract
609,708. Inductances. POLYDOROFF, W. J. May 25, 1944, No. 10174. Convention date, May 22, 1942. [Class 38 (ii)] A variable inductance for increasing the tuning range at high frequencies, comprises a movable ferro-magnetic core 2 coaxial with a coil divided into a number of sections connected in parallel. For frequencies of the order of 100 megacycles, only a very small value of inductance is needed, and a suitable inductor would normally have few widely-spaced turns giving a small tuning range. To obviate this, a coil 3 is divided into two parts connected in parallel so that many more turns may be employed. In another modification, the coil comprises four sections. In all cases the sections are connected in aiding relation, have equal inductance and are arranged symmetrically. Core 2 is of powdered magnetic material such as magnetite or of iron alloyed with silicon or antimony. Fig. 6 shows a coil with a ribbon type of winding 3 divided into two sections, the core 2 being formed of a number of discs with air spaces for cooling. The Specification as open to inspection under Sect. 91 comprises also a similar inductance in which the turns are formed by cutting slots in a single conducting strip. This subject-matter does not appear in the Specification as accepted.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA609708X | 1942-05-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB609708A true GB609708A (en) | 1948-10-06 |
Family
ID=4171942
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB10174/44A Expired GB609708A (en) | 1942-05-22 | 1944-05-25 | Improvements in and relating to ultra high frequency inductors |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB609708A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3173080A (en) * | 1959-05-25 | 1965-03-09 | Maeda Hisao | Electric circuit having distributed constants |
| WO2021094643A1 (en) * | 2019-11-12 | 2021-05-20 | Teleste Oyj | A choke |
-
1944
- 1944-05-25 GB GB10174/44A patent/GB609708A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3173080A (en) * | 1959-05-25 | 1965-03-09 | Maeda Hisao | Electric circuit having distributed constants |
| WO2021094643A1 (en) * | 2019-11-12 | 2021-05-20 | Teleste Oyj | A choke |
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