GB436911A - Improvements in variable inductances - Google Patents
Improvements in variable inductancesInfo
- Publication number
- GB436911A GB436911A GB1872134A GB1872134A GB436911A GB 436911 A GB436911 A GB 436911A GB 1872134 A GB1872134 A GB 1872134A GB 1872134 A GB1872134 A GB 1872134A GB 436911 A GB436911 A GB 436911A
- Authority
- GB
- United Kingdom
- Prior art keywords
- core
- solenoids
- coils
- solenoid
- increase
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Electromagnets (AREA)
Abstract
436,911. Inductances. GENERAL ELECTRIC CO., Ltd., Magnet House, Kingsway, London, and SMITH, C. G., c/o General Electric Co., Wembley, Middlesex. June 25, 1934, No. 18721. [Class 37] A variable inductance, for example a tuning inductance for a wireless receiver, comprises a plurality of coils and a magnetic core which are relatively movable so that an increase of coupling between any pair of coils is accompanied by an increase in the effective permeability of the medium. In the construction shown, two solenoids 1, 2 of different diameters are connected in series and are adapted to slide over one another and also over a core 3 of finely divided magnetic material. This is effected by mechanism which may be so arranged that the solenoids 1, 2 approach the core 3 symmetrically, or the solenoid 2 may first slide over the core 3, these two elements then sliding together into the solenoid 1, which is fixed. Specification 410,327 is referred to.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1872134A GB436911A (en) | 1934-06-25 | 1934-06-25 | Improvements in variable inductances |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1872134A GB436911A (en) | 1934-06-25 | 1934-06-25 | Improvements in variable inductances |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB436911A true GB436911A (en) | 1935-10-21 |
Family
ID=10117263
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1872134A Expired GB436911A (en) | 1934-06-25 | 1934-06-25 | Improvements in variable inductances |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB436911A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE743931C (en) * | 1939-07-02 | 1944-01-07 | Telefunken Gmbh | Adjustment device for high frequency variometer |
| US4941389A (en) * | 1988-08-22 | 1990-07-17 | Wendler David C | Electronic pickup with mounting assembly for a hollow bodied musical instrument |
-
1934
- 1934-06-25 GB GB1872134A patent/GB436911A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE743931C (en) * | 1939-07-02 | 1944-01-07 | Telefunken Gmbh | Adjustment device for high frequency variometer |
| US4941389A (en) * | 1988-08-22 | 1990-07-17 | Wendler David C | Electronic pickup with mounting assembly for a hollow bodied musical instrument |
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