GB410217A - Improvements in or appertaining to a tuning device for wireless apparatus - Google Patents
Improvements in or appertaining to a tuning device for wireless apparatusInfo
- Publication number
- GB410217A GB410217A GB3306832A GB3306832A GB410217A GB 410217 A GB410217 A GB 410217A GB 3306832 A GB3306832 A GB 3306832A GB 3306832 A GB3306832 A GB 3306832A GB 410217 A GB410217 A GB 410217A
- Authority
- GB
- United Kingdom
- Prior art keywords
- coil
- core
- inductance
- magnetic
- wireless apparatus
- 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
Abstract
410,217. Inductances; adjusting wireless apparatus. COLE, Ltd., E. K., and WYBORN, E. J., Priory Crescent, Southend-on-Sea. Nov. 23, 1932, No. 33068. [Class 37.] For tuning radio receivers, a coil has a core or body adapted by its presence to promote the inductance of the coil, and a core or body adapted by its presence to reduce the effective inductance and means for moving both cores or bodies so that the influence of both on the coil is varied simultaneously to give a wide range to the inductance valves. In Fig. 1 a magnetic core 1 and a non-magnetic, for example brass, core 3 are adapted to slide together into and out of the coil 2. A length of insulating material may separate the two parts of the core. In Fig. 2 a coil 2 and brass shield 3 may together be moved, over a magnetic body 1. Means for effecting this movement in respect of three coils 2 simultaneously are shown in Fig. 3. Cores 5 on a platform 6 are moved by means of the gearing associated with a knob 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3306832A GB410217A (en) | 1932-11-23 | 1932-11-23 | Improvements in or appertaining to a tuning device for wireless apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3306832A GB410217A (en) | 1932-11-23 | 1932-11-23 | Improvements in or appertaining to a tuning device for wireless apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB410217A true GB410217A (en) | 1934-05-17 |
Family
ID=10348117
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3306832A Expired GB410217A (en) | 1932-11-23 | 1932-11-23 | Improvements in or appertaining to a tuning device for wireless apparatus |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB410217A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2666187A (en) * | 1949-06-28 | 1954-01-12 | Automatic Mfg Corp | Variable inductance |
| US3703692A (en) * | 1971-11-03 | 1972-11-21 | Hipotronics | Mechanically adjustable high voltage inductive reactor for series resonant testing |
-
1932
- 1932-11-23 GB GB3306832A patent/GB410217A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2666187A (en) * | 1949-06-28 | 1954-01-12 | Automatic Mfg Corp | Variable inductance |
| US3703692A (en) * | 1971-11-03 | 1972-11-21 | Hipotronics | Mechanically adjustable high voltage inductive reactor for series resonant testing |
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